Merge bk-internal:/home/bk/mysql-5.0-maint

into  pilot.(none):/data/msvensson/mysql/mysql-5.0-maint

client/mysql_upgrade.c

@@ -457,6 +457,7 @@ static int run_query(const char *query, DYNAMIC_STRING *ds_res,
                 NULL);
 
   my_close(fd, MYF(0));
+  my_delete(query_file_path, MYF(0));
 
   DBUG_RETURN(ret);
 }

client/mysqltest.c

@@ -74,18 +74,12 @@
 #define QUERY_SEND_FLAG  1
 #define QUERY_REAP_FLAG  2
 
-                           enum {
-   RESULT_OK= 0,
-   RESULT_CONTENT_MISMATCH= 1,
-   RESULT_LENGTH_MISMATCH= 2
- };
-
 enum {
   OPT_SKIP_SAFEMALLOC=256, OPT_SSL_SSL, OPT_SSL_KEY, OPT_SSL_CERT,
   OPT_SSL_CA, OPT_SSL_CAPATH, OPT_SSL_CIPHER, OPT_PS_PROTOCOL,
   OPT_SP_PROTOCOL, OPT_CURSOR_PROTOCOL, OPT_VIEW_PROTOCOL,
   OPT_SSL_VERIFY_SERVER_CERT, OPT_MAX_CONNECT_RETRIES,
-  OPT_MARK_PROGRESS, OPT_CHARSETS_DIR, OPT_LOG_DIR
+  OPT_MARK_PROGRESS, OPT_CHARSETS_DIR, OPT_LOG_DIR, OPT_TAIL_LINES
 };
 
 static int record= 0, opt_sleep= -1;
@@ -117,6 +111,9 @@ static char line_buffer[MAX_DELIMITER_LENGTH], *line_buffer_pos= line_buffer;
 
 static uint start_lineno= 0; /* Start line of current command */
 
+/* Number of lines of the result to include in failure report */
+static uint opt_tail_lines= 0;
+
 static char delimiter[MAX_DELIMITER_LENGTH]= ";";
 static uint delimiter_length= 1;
 
@@ -238,7 +235,7 @@ struct st_connection
 #endif /*EMBEDDED_LIBRARY*/
 };
 struct st_connection connections[128];
-struct st_connection* cur_con, *next_con, *connections_end;
+struct st_connection* cur_con= NULL, *next_con, *connections_end;
 
 /*
   List of commands in mysqltest
@@ -455,7 +452,6 @@ void free_tmp_sh_file();
 void free_win_path_patterns();
 #endif
 
-static int eval_result = 0;
 
 /* For replace_column */
 static char *replace_column[MAX_COLUMNS];
@@ -503,11 +499,11 @@ void handle_no_error(struct st_command*);
 pthread_attr_t cn_thd_attrib;
 
 /*
-  send_one_query executes query in separate thread what is
+  send_one_query executes query in separate thread, which is
   necessary in embedded library to run 'send' in proper way.
   This implementation doesn't handle errors returned
   by mysql_send_query. It's technically possible, though
-  i don't see where it is needed.
+  I don't see where it is needed.
 */
 pthread_handler_t send_one_query(void *arg)
 {
@@ -608,6 +604,77 @@ void do_eval(DYNAMIC_STRING *query_eval, const char *query,
 }
 
 
+/*
+  Show any warnings just before the error. Since the last error
+  is added to the warning stack, only print @@warning_count-1 warnings.
+
+  NOTE! This function should be safe to call when an error
+  has occured and this any further errors will be ignored(although logged)
+
+  SYNOPSIS
+  show_warnings_before_error
+  mysql - connection to use
+
+*/
+
+static void show_warnings_before_error(MYSQL* mysql)
+{
+  MYSQL_RES* res;
+  const char* query= "SHOW WARNINGS";
+  DBUG_ENTER("show_warnings_before_error");
+
+  if (!mysql)
+    DBUG_VOID_RETURN;
+
+  if (mysql_query(mysql, query))
+  {
+    log_msg("Error running query '%s': %d %s",
+            query, mysql_errno(mysql), mysql_error(mysql));
+    DBUG_VOID_RETURN;
+  }
+
+  if ((res= mysql_store_result(mysql)) == NULL)
+  {
+    /* No result set returned */
+    DBUG_VOID_RETURN;
+  }
+
+  if (mysql_num_rows(res) <= 1)
+  {
+    /* Don't display the last row, it's "last error" */
+  }
+  else
+  {
+    MYSQL_ROW row;
+    unsigned int row_num= 0;
+    unsigned int num_fields= mysql_num_fields(res);
+
+    fprintf(stderr, "\nWarnings from just before the error:\n");
+    while ((row= mysql_fetch_row(res)))
+    {
+      unsigned int i;
+      unsigned long *lengths= mysql_fetch_lengths(res);
+
+      if (++row_num >= mysql_num_rows(res))
+      {
+        /* Don't display the last row, it's "last error" */
+        break;
+      }
+
+      for(i= 0; i < num_fields; i++)
+      {
+        fprintf(stderr, "%.*s ", (int)lengths[i],
+                row[i] ? row[i] : "NULL");
+      }
+      fprintf(stderr, "\n");
+    }
+  }
+  mysql_free_result(res);
+
+  DBUG_VOID_RETURN;
+}
+
+
 enum arg_type
 {
   ARG_STRING,
@@ -686,6 +753,15 @@ void check_command_args(struct st_command *command,
           command->first_word_len, command->query);
 
   }
+  /* Check for too many arguments passed */
+  ptr= command->last_argument;
+  while(ptr <= command->end)
+  {
+    if (*ptr && *ptr != ' ')
+      die("Extra argument '%s' passed to '%.*s'",
+          ptr, command->first_word_len, command->query);
+    ptr++;
+  }
   DBUG_VOID_RETURN;
 }
 
@@ -881,6 +957,24 @@ void die(const char *fmt, ...)
   fprintf(stderr, "\n");
   fflush(stderr);
 
+  /* Show results from queries just before failure */
+  if (ds_res.length && opt_tail_lines)
+  {
+    int tail_lines= opt_tail_lines;
+    char* show_from= ds_res.str + ds_res.length - 1;
+    while(show_from > ds_res.str && tail_lines > 0 )
+    {
+      show_from--;
+      if (*show_from == '\n')
+        tail_lines--;
+    }
+    fprintf(stderr, "\nThe result from queries just before the failure was:\n");
+    if (show_from > ds_res.str)
+      fprintf(stderr, "< snip >");
+    fprintf(stderr, "%s", show_from);
+    fflush(stderr);
+  }
+
   /* Dump the result that has been accumulated so far to .log file */
   if (result_file_name && ds_res.length)
     dump_result_to_log_file(ds_res.str, ds_res.length);
@@ -889,6 +983,13 @@ void die(const char *fmt, ...)
   if (result_file_name && ds_warning_messages.length)
     dump_warning_messages();
 
+  /*
+    Help debugging by displaying any warnings that might have
+    been produced prior to the error
+  */
+  if (cur_con)
+    show_warnings_before_error(&cur_con->mysql);
+
   cleanup_and_exit(1);
 }
 
@@ -992,11 +1093,10 @@ void warning_msg(const char *fmt, ...)
 void log_msg(const char *fmt, ...)
 {
   va_list args;
-  char buff[512];
+  char buff[1024];
   size_t len;
   DBUG_ENTER("log_msg");
 
-  memset(buff, 0, sizeof(buff));
   va_start(args, fmt);
   len= my_vsnprintf(buff, sizeof(buff)-1, fmt, args);
   va_end(args);
@@ -1009,77 +1109,372 @@ void log_msg(const char *fmt, ...)
 
 
 /*
-  Compare content of the string ds to content of file fname
+  Read a file and append it to ds
+
+  SYNOPSIS
+  cat_file
+  ds - pointer to dynamic string where to add the files content
+  filename - name of the file to read
+
 */
 
-int dyn_string_cmp(DYNAMIC_STRING* ds, const char *fname)
+void cat_file(DYNAMIC_STRING* ds, const char* filename)
 {
-  MY_STAT stat_info;
-  char *tmp, *res_ptr;
-  char eval_file[FN_REFLEN];
-  int res;
-  uint res_len;
   int fd;
-  DYNAMIC_STRING res_ds;
-  DBUG_ENTER("dyn_string_cmp");
+  uint len;
+  char buff[512];
 
-  if (!test_if_hard_path(fname))
+  if ((fd= my_open(filename, O_RDONLY, MYF(0))) < 0)
+    die("Failed to open file %s", filename);
+  while((len= my_read(fd, (byte*)&buff,
+                      sizeof(buff), MYF(0))) > 0)
   {
-    strxmov(eval_file, opt_basedir, fname, NullS);
-    fn_format(eval_file, eval_file, "", "", MY_UNPACK_FILENAME);
+    char *p= buff, *start= buff;
+    while (p < buff+len)
+    {
+      /* Convert cr/lf to lf */
+      if (*p == '\r' && *(p+1) && *(p+1)== '\n')
+      {
+        /* Add fake newline instead of cr and output the line */
+        *p= '\n';
+        p++; /* Step past the "fake" newline */
+        dynstr_append_mem(ds, start, p-start);
+        p++; /* Step past the "fake" newline */
+        start= p;
+      }
+      else
+        p++;
+    }
+    /* Output any chars that migh be left */
+    dynstr_append_mem(ds, start, p-start);
   }
-  else
-    fn_format(eval_file, fname, "", "", MY_UNPACK_FILENAME);
+  my_close(fd, MYF(0));
+}
 
-  if (!my_stat(eval_file, &stat_info, MYF(MY_WME)))
-    die(NullS);
-  if (!eval_result && (uint) stat_info.st_size != ds->length)
+
+/*
+  Run the specified command with popen
+
+  SYNOPSIS
+  run_command
+  cmd - command to execute(should be properly quoted
+  ds_res- pointer to dynamic string where to store the result
+
+*/
+
+static int run_command(char* cmd,
+                       DYNAMIC_STRING *ds_res)
+{
+  char buf[512]= {0};
+  FILE *res_file;
+  int error;
+
+  if (!(res_file= popen(cmd, "r")))
+    die("popen(\"%s\", \"r\") failed", cmd);
+
+  while (fgets(buf, sizeof(buf), res_file))
+  {
+    DBUG_PRINT("info", ("buf: %s", buf));
+    if(ds_res)
+    {
+      /* Save the output of this command in the supplied string */
+      dynstr_append(ds_res, buf);
+    }
+    else
+    {
+      /* Print it directly on screen */
+      fprintf(stdout, "%s", buf);
+    }
+  }
+
+  error= pclose(res_file);
+  return WEXITSTATUS(error);
+}
+
+
+/*
+  Run the specified tool with variable number of arguments
+
+  SYNOPSIS
+  run_tool
+  tool_path - the name of the tool to run
+  ds_res - pointer to dynamic string where to store the result
+  ... - variable number of arguments that will be properly
+        quoted and appended after the tool's name
+
+*/
+
+static int run_tool(const char *tool_path, DYNAMIC_STRING *ds_res, ...)
+{
+  int ret;
+  const char* arg;
+  va_list args;
+  DYNAMIC_STRING ds_cmdline;
+
+  DBUG_ENTER("run_tool");
+  DBUG_PRINT("enter", ("tool_path: %s", tool_path));
+
+  if (init_dynamic_string(&ds_cmdline, IF_WIN("\"", ""), FN_REFLEN, FN_REFLEN))
+    die("Out of memory");
+
+  dynstr_append_os_quoted(&ds_cmdline, tool_path, NullS);
+  dynstr_append(&ds_cmdline, " ");
+
+  va_start(args, ds_res);
+
+  while ((arg= va_arg(args, char *)))
   {
-    DBUG_PRINT("info",("Size differs:  result size: %u  file size: %lu",
-		       ds->length, (ulong) stat_info.st_size));
-    DBUG_PRINT("info",("result: '%s'", ds->str));
-    DBUG_RETURN(RESULT_LENGTH_MISMATCH);
+    /* Options should be os quoted */
+    if (strncmp(arg, "--", 2) == 0)
+      dynstr_append_os_quoted(&ds_cmdline, arg, NullS);
+    else
+      dynstr_append(&ds_cmdline, arg);
+    dynstr_append(&ds_cmdline, " ");
   }
-  if (!(tmp = (char*) my_malloc(stat_info.st_size + 1, MYF(MY_WME))))
+
+  va_end(args);
+
+#ifdef __WIN__
+  dynstr_append(&ds_cmdline, "\"");
+#endif
+
+  DBUG_PRINT("info", ("Running: %s", ds_cmdline.str));
+  ret= run_command(ds_cmdline.str, ds_res);
+  DBUG_PRINT("exit", ("ret: %d", ret));
+  dynstr_free(&ds_cmdline);
+  DBUG_RETURN(ret);
+}
+
+
+/*
+  Show the diff of two files using the systems builtin diff
+  command. If no such diff command exist, just dump the content
+  of the two files and inform about how to get "diff"
+
+  SYNOPSIS
+  show_diff
+  ds - pointer to dynamic string where to add the diff(may be NULL)
+  filename1 - name of first file
+  filename2 - name of second file
+
+*/
+
+void show_diff(DYNAMIC_STRING* ds,
+               const char* filename1, const char* filename2)
+{
+
+  DYNAMIC_STRING ds_tmp;
+
+  if (init_dynamic_string(&ds_tmp, "", 256, 256))
     die("Out of memory");
 
-  if ((fd = my_open(eval_file, O_RDONLY, MYF(MY_WME))) < 0)
-    die("Failed to open file %s", eval_file);
-  if (my_read(fd, (byte*)tmp, stat_info.st_size, MYF(MY_WME|MY_NABP)))
-    die("Failed to read from file %s, errno: %d", eval_file, errno);
-  tmp[stat_info.st_size] = 0;
-  init_dynamic_string(&res_ds, "", stat_info.st_size+256, 256);
-  if (eval_result)
-  {
-    do_eval(&res_ds, tmp, tmp + stat_info.st_size, FALSE);
-    res_ptr= res_ds.str;
-    res_len= res_ds.length;
-    if (res_len != ds->length)
+  /* First try with unified diff */
+  if (run_tool("diff",
+               &ds_tmp, /* Get output from diff in ds_tmp */
+               "-u",
+               filename1,
+               filename2,
+               "2>&1",
+               NULL) > 1) /* Most "diff" tools return >1 if error */
+  {
+    dynstr_set(&ds_tmp, "");
+
+    /* Fallback to context diff with "diff -c" */
+    if (run_tool("diff",
+                 &ds_tmp, /* Get output from diff in ds_tmp */
+                 "-c",
+                 filename1,
+                 filename2,
+                 "2>&1",
+                 NULL) > 1) /* Most "diff" tools return >1 if error */
     {
-      res= RESULT_LENGTH_MISMATCH;
-      goto err;
+      /*
+        Fallback to dump both files to result file and inform
+        about installing "diff"
+      */
+      dynstr_set(&ds_tmp, "");
+
+      dynstr_append(&ds_tmp,
+"\n"
+"The two files differ but it was not possible to execute 'diff' in\n"
+"order to show only the difference, tried both 'diff -u' or 'diff -c'.\n"
+"Instead the whole content of the two files was shown for you to diff manually. ;)\n\n"
+"To get a better report you should install 'diff' on your system, which you\n"
+"for example can get from http://www.gnu.org/software/diffutils/diffutils.html\n"
+#ifdef __WIN__
+"or http://gnuwin32.sourceforge.net/packages/diffutils.htm\n"
+#endif
+"\n");
+
+      dynstr_append(&ds_tmp, " --- ");
+      dynstr_append(&ds_tmp, filename1);
+      dynstr_append(&ds_tmp, " >>>\n");
+      cat_file(&ds_tmp, filename1);
+      dynstr_append(&ds_tmp, "<<<\n --- ");
+      dynstr_append(&ds_tmp, filename1);
+      dynstr_append(&ds_tmp, " >>>\n");
+      cat_file(&ds_tmp, filename2);
+      dynstr_append(&ds_tmp, "<<<<\n");
     }
   }
+
+  if (ds)
+  {
+    /* Add the diff to output */
+    dynstr_append_mem(ds, ds_tmp.str, ds_tmp.length);
+  }
   else
   {
-    res_ptr = tmp;
-    res_len = stat_info.st_size;
+    /* Print diff directly to stdout */
+    fprintf(stderr, "%s\n", ds_tmp.str);
   }
+ 
+  dynstr_free(&ds_tmp);
 
-  res= (memcmp(res_ptr, ds->str, res_len)) ?
-    RESULT_CONTENT_MISMATCH : RESULT_OK;
+}
 
-err:
-  if (res && eval_result)
-    str_to_file(fn_format(eval_file, fname, "", ".eval",
-                          MY_REPLACE_EXT),
-                res_ptr, res_len);
 
-  dynstr_free(&res_ds);
-  my_free((gptr) tmp, MYF(0));
-  my_close(fd, MYF(MY_WME));
+enum compare_files_result_enum {
+   RESULT_OK= 0,
+   RESULT_CONTENT_MISMATCH= 1,
+   RESULT_LENGTH_MISMATCH= 2
+};
+
+/*
+  Compare two files, given a fd to the first file and
+  name of the second file
+
+  SYNOPSIS
+  compare_files2
+  fd - Open file descriptor of the first file
+  filename2 - Name of second file
+
+  RETURN VALUES
+  According to the values in "compare_files_result_enum"
+
+*/
+
+int compare_files2(File fd, const char* filename2)
+{
+  int error= RESULT_OK;
+  File fd2;
+  uint len, len2;
+  char buff[512], buff2[512];
+
+  if ((fd2= my_open(filename2, O_RDONLY, MYF(0))) < 0)
+  {
+    my_close(fd, MYF(0));
+    die("Failed to open second file: %s", filename2);
+  }
+  while((len= my_read(fd, (byte*)&buff,
+                      sizeof(buff), MYF(0))) > 0)
+  {
+    if ((len2= my_read(fd2, (byte*)&buff2,
+                       sizeof(buff2), MYF(0))) < len)
+    {
+      /* File 2 was smaller */
+      error= RESULT_LENGTH_MISMATCH;
+      break;
+    }
+    if (len2 > len)
+    {
+      /* File 1 was smaller */
+      error= RESULT_LENGTH_MISMATCH;
+      break;
+    }
+    if ((memcmp(buff, buff2, len)))
+    {
+      /* Content of this part differed */
+      error= RESULT_CONTENT_MISMATCH;
+      break;
+    }
+  }
+  if (!error && my_read(fd2, (byte*)&buff2,
+                        sizeof(buff2), MYF(0)) > 0)
+  {
+    /* File 1 was smaller */
+    error= RESULT_LENGTH_MISMATCH;
+  }
+
+  my_close(fd2, MYF(0));
 
-  DBUG_RETURN(res);
+  return error;
+}
+
+
+/*
+  Compare two files, given their filenames
+
+  SYNOPSIS
+  compare_files
+  filename1 - Name of first file
+  filename2 - Name of second file
+
+  RETURN VALUES
+  See 'compare_files2'
+
+*/
+
+int compare_files(const char* filename1, const char* filename2)
+{
+  File fd;
+  int error;
+
+  if ((fd= my_open(filename1, O_RDONLY, MYF(0))) < 0)
+    die("Failed to open first file: %s", filename1);
+
+  error= compare_files2(fd, filename2);
+
+  my_close(fd, MYF(0));
+
+  return error;
+}
+
+
+/*
+  Compare content of the string in ds to content of file fname
+
+  SYNOPSIS
+  dyn_string_cmp
+  ds - Dynamic string containing the string o be compared
+  fname - Name of file to compare with
+
+  RETURN VALUES
+  See 'compare_files2'
+*/
+
+int dyn_string_cmp(DYNAMIC_STRING* ds, const char *fname)
+{
+  int error;
+  File fd;
+  char ds_temp_file_path[FN_REFLEN];
+
+  DBUG_ENTER("dyn_string_cmp");
+  DBUG_PRINT("enter", ("fname: %s", fname));
+
+  if ((fd= create_temp_file(ds_temp_file_path, NULL,
+                            "tmp", O_CREAT | O_SHARE | O_RDWR,
+                            MYF(MY_WME))) < 0)
+    die("Failed to create temporary file for ds");
+
+  /* Write ds to temporary file and set file pos to beginning*/
+  if (my_write(fd, ds->str, ds->length,
+               MYF(MY_FNABP | MY_WME)) ||
+      my_seek(fd, 0, SEEK_SET, MYF(0)) == MY_FILEPOS_ERROR)
+  {
+    my_close(fd, MYF(0));
+    /* Remove the temporary file */
+    my_delete(ds_temp_file_path, MYF(0));
+    die("Failed to write to '%s'", ds_temp_file_path);
+  }
+
+  error= compare_files2(fd, fname);
+
+  my_close(fd, MYF(0));
+  /* Remove the temporary file */
+  my_delete(ds_temp_file_path, MYF(0));
+
+  DBUG_RETURN(error);
 }
 
 
@@ -1097,21 +1492,34 @@ err:
 
 void check_result(DYNAMIC_STRING* ds)
 {
+  const char* mess= "Result content mismatch\n";
+
   DBUG_ENTER("check_result");
   DBUG_ASSERT(result_file_name);
+  DBUG_PRINT("enter", ("result_file_name: %s", result_file_name));
 
   switch (dyn_string_cmp(ds, result_file_name))
   {
   case RESULT_OK:
     break; /* ok */
   case RESULT_LENGTH_MISMATCH:
-    dump_result_to_reject_file(ds->str, ds->length);
-    die("Result length mismatch");
-    break;
+    mess= "Result length mismatch\n";
+    /* Fallthrough */
   case RESULT_CONTENT_MISMATCH:
-    dump_result_to_reject_file(ds->str, ds->length);
-    die("Result content mismatch");
+  {
+    /* Result mismatched, dump results to .reject file and then show the diff */
+    char reject_file[FN_REFLEN];
+    fn_format(reject_file, result_file_name, "", ".reject",
+              MY_REPLACE_EXT);
+    DBUG_PRINT("enter", ("reject_file_name: %s", reject_file));
+    str_to_file(reject_file, ds->str, ds->length);
+
+    dynstr_set(ds, NULL); /* Don't create a .log file */
+
+    show_diff(NULL, result_file_name, reject_file);
+    die(mess);
     break;
+  }
   default: /* impossible */
     die("Unknown error code from dyn_string_cmp()");
   }
@@ -1126,7 +1534,7 @@ void check_result(DYNAMIC_STRING* ds)
   indicating that test is not supported
 
   SYNOPSIS
-  check_result
+  check_require
   ds - content to be checked
   fname - name of file to check against
 
@@ -1455,40 +1863,22 @@ void var_query_set(VAR *var, const char *query, const char** query_end)
     die("Query '%s' didn't return a result set", ds_query.str);
   dynstr_free(&ds_query);
 
-  if ((row = mysql_fetch_row(res)) && row[0])
+  if ((row= mysql_fetch_row(res)) && row[0])
   {
     /*
-      Concatenate all row results with tab in between to allow us to work
-      with results from many columns (for example from SHOW VARIABLES)
+      Concatenate all fields in the first row with tab in between
+      and assign that string to the $variable
     */
     DYNAMIC_STRING result;
     uint i;
     ulong *lengths;
-#ifdef NOT_YET
-    MYSQL_FIELD *fields= mysql_fetch_fields(res);
-#endif
 
-    init_dynamic_string(&result, "", 2048, 2048);
+    init_dynamic_string(&result, "", 512, 512);
     lengths= mysql_fetch_lengths(res);
-    for (i=0; i < mysql_num_fields(res); i++)
+    for (i= 0; i < mysql_num_fields(res); i++)
     {
-      if (row[0])
+      if (row[i])
       {
-#ifdef NOT_YET
-	/* Add to <var_name>_<col_name> */
-	uint j;
-	char var_col_name[MAX_VAR_NAME_LENGTH];
-	uint length= snprintf(var_col_name, MAX_VAR_NAME_LENGTH,
-			      "$%s_%s", var->name, fields[i].name);
-	/* Convert characters not allowed in variable names to '_' */
-	for (j= 1; j < length; j++)
-	{
-	  if (!my_isvar(charset_info,var_col_name[j]))
-            var_col_name[j]= '_';
-        }
-	var_set(var_col_name,  var_col_name + length,
-		row[i], row[i] + lengths[i]);
-#endif
         /* Add column to tab separated string */
 	dynstr_append_mem(&result, row[i], lengths[i]);
       }
@@ -1530,7 +1920,7 @@ void var_query_set(VAR *var, const char *query, const char** query_end)
 
 void var_set_query_get_value(struct st_command *command, VAR *var)
 {
-  ulong row_no;
+  long row_no;
   int col_no= -1;
   MYSQL_RES* res;
   MYSQL* mysql= &cur_con->mysql;
@@ -1602,7 +1992,7 @@ void var_set_query_get_value(struct st_command *command, VAR *var)
   {
     /* Get the value */
     MYSQL_ROW row;
-    ulong rows= 0;
+    long rows= 0;
     const char* value= "No such row";
 
     while ((row= mysql_fetch_row(res)))
@@ -1965,7 +2355,7 @@ void do_exec(struct st_command *command)
 
     if (command->abort_on_error)
     {
-      log_msg("exec of '%s failed, error: %d, status: %d, errno: %d",
+      log_msg("exec of '%s' failed, error: %d, status: %d, errno: %d",
               ds_cmd.str, error, status, errno);
       die("command \"%s\" failed", command->first_argument);
     }
@@ -2203,8 +2593,8 @@ void do_copy_file(struct st_command *command)
   command	command handle
 
   DESCRIPTION
-  chmod <octal> <file>
-  Change file permission of <file>
+  chmod_file <octal> <file_name>
+  Change file permission of <file_name>
 
 */
 
@@ -2214,8 +2604,8 @@ void do_chmod_file(struct st_command *command)
   static DYNAMIC_STRING ds_mode;
   static DYNAMIC_STRING ds_file;
   const struct command_arg chmod_file_args[] = {
-    "mode", ARG_STRING, TRUE, &ds_mode, "Mode of file",
-    "file", ARG_STRING, TRUE, &ds_file, "Filename of file to modify"
+    "mode", ARG_STRING, TRUE, &ds_mode, "Mode of file(octal) ex. 0660",
+    "filename", ARG_STRING, TRUE, &ds_file, "Filename of file to modify"
   };
   DBUG_ENTER("do_chmod_file");
 
@@ -2310,8 +2700,22 @@ void read_until_delimiter(DYNAMIC_STRING *ds,
     c= my_getc(cur_file->file);
 
     if (c == '\n')
+    {
       cur_file->lineno++;
 
+      /* Skip newline from the same line as the command */
+      if (start_lineno == (cur_file->lineno - 1))
+        continue;
+    }
+    else if (start_lineno == cur_file->lineno)
+    {
+      /*
+        No characters except \n are allowed on
+        the same line as the command
+      */
+      die("Trailing characters found after command");
+    }
+
     if (feof(cur_file->file))
       die("End of file encountered before '%s' delimiter was found",
           ds_delimiter->str);
@@ -2349,6 +2753,12 @@ void do_write_file_command(struct st_command *command, my_bool append)
   if (ds_delimiter.length == 0)
     dynstr_set(&ds_delimiter, "EOF");
 
+  if (!append && access(ds_filename.str, F_OK) == 0)
+  {
+    /* The file should not be overwritten */
+    die("File already exist: '%s'", ds_filename.str);
+  }
+
   init_dynamic_string(&ds_content, "", 1024, 1024);
   read_until_delimiter(&ds_content, &ds_delimiter);
   DBUG_PRINT("info", ("Writing to file: %s", ds_filename.str));
@@ -2381,7 +2791,7 @@ void do_write_file_command(struct st_command *command, my_bool append)
   Write everything between the "write_file" command and 'delimiter'
   to "file_name"
 
-  NOTE! Overwrites existing file
+  NOTE! Will fail if <file_name> exists
 
   Default <delimiter> is EOF
 
@@ -2438,9 +2848,6 @@ void do_append_file(struct st_command *command)
 
 void do_cat_file(struct st_command *command)
 {
-  int fd;
-  uint len;
-  char buff[512];
   static DYNAMIC_STRING ds_filename;
   const struct command_arg cat_file_args[] = {
     "filename", ARG_STRING, TRUE, &ds_filename, "File to read from"
@@ -2455,37 +2862,13 @@ void do_cat_file(struct st_command *command)
 
   DBUG_PRINT("info", ("Reading from, file: %s", ds_filename.str));
 
-  if ((fd= my_open(ds_filename.str, O_RDONLY, MYF(0))) < 0)
-    die("Failed to open file %s", ds_filename.str);
-  while((len= my_read(fd, (byte*)&buff,
-                      sizeof(buff), MYF(0))) > 0)
-  {
-    char *p= buff, *start= buff;
-    while (p < buff+len)
-    {
-      /* Convert cr/lf to lf */
-      if (*p == '\r' && *(p+1) && *(p+1)== '\n')
-      {
-        /* Add fake newline instead of cr and output the line */
-        *p= '\n';
-        p++; /* Step past the "fake" newline */
-        dynstr_append_mem(&ds_res, start, p-start);
-        p++; /* Step past the "fake" newline */
-        start= p;
-      }
-      else
-        p++;
-    }
-    /* Output any chars that migh be left */
-    dynstr_append_mem(&ds_res, start, p-start);
-  }
-  my_close(fd, MYF(0));
+  cat_file(&ds_res, ds_filename.str);
+
   dynstr_free(&ds_filename);
   DBUG_VOID_RETURN;
 }
 
 
-
 /*
   SYNOPSIS
   do_diff_files
@@ -2501,9 +2884,6 @@ void do_cat_file(struct st_command *command)
 void do_diff_files(struct st_command *command)
 {
   int error= 0;
-  int fd, fd2;
-  uint len, len2;
-  char buff[512], buff2[512];
   static DYNAMIC_STRING ds_filename;
   static DYNAMIC_STRING ds_filename2;
   const struct command_arg diff_file_args[] = {
@@ -2518,39 +2898,14 @@ void do_diff_files(struct st_command *command)
                      sizeof(diff_file_args)/sizeof(struct command_arg),
                      ' ');
 
-  if ((fd= my_open(ds_filename.str, O_RDONLY, MYF(0))) < 0)
-    die("Failed to open first file %s", ds_filename.str);
-  if ((fd2= my_open(ds_filename2.str, O_RDONLY, MYF(0))) < 0)
+  if ((error= compare_files(ds_filename.str, ds_filename2.str)))
   {
-    my_close(fd, MYF(0));
-    die("Failed to open second file %s", ds_filename2.str);
-  }
-  while((len= my_read(fd, (byte*)&buff,
-                      sizeof(buff), MYF(0))) > 0)
-  {
-    if ((len2= my_read(fd2, (byte*)&buff2,
-                       sizeof(buff2), MYF(0))) != len)
-    {
-      /* File 2 was smaller */
-      error= 1;
-      break;
-    }
-    if ((memcmp(buff, buff2, len)))
-    {
-      /* Content of this part differed */
-      error= 1;
-      break;
-    }
-  }
-  if (my_read(fd2, (byte*)&buff2,
-              sizeof(buff2), MYF(0)) > 0)
-  {
-    /* File 1 was smaller */
-    error= 1;
+    /* Compare of the two files failed, append them to output
+       so the failure can be analyzed
+    */
+    show_diff(&ds_res, ds_filename.str, ds_filename2.str);
   }
 
-  my_close(fd, MYF(0));
-  my_close(fd2, MYF(0));
   dynstr_free(&ds_filename);
   dynstr_free(&ds_filename2);
   handle_command_error(command, error);
@@ -2621,8 +2976,10 @@ void do_send_quit(struct st_command *command)
 void do_perl(struct st_command *command)
 {
   int error;
-  char buf[FN_REFLEN];
+  File fd;
   FILE *res_file;
+  char buf[FN_REFLEN];
+  char temp_file_path[FN_REFLEN];
   static DYNAMIC_STRING ds_script;
   static DYNAMIC_STRING ds_delimiter;
   const struct command_arg perl_args[] = {
@@ -2645,14 +3002,17 @@ void do_perl(struct st_command *command)
 
   DBUG_PRINT("info", ("Executing perl: %s", ds_script.str));
 
-  /* Format a name for a tmp .pl file that is unique for this process */
-  my_snprintf(buf, sizeof(buf), "%s/tmp/tmp_%d.pl",
-              getenv("MYSQLTEST_VARDIR"), getpid());
-  str_to_file(buf, ds_script.str, ds_script.length);
+  /* Create temporary file name */
+  if ((fd= create_temp_file(temp_file_path, getenv("MYSQLTEST_VARDIR"),
+                            "tmp", O_CREAT | O_SHARE | O_RDWR,
+                            MYF(MY_WME))) < 0)
+    die("Failed to create temporary file for perl command");
+  my_close(fd, MYF(0));
 
-  /* Format the perl <filename> command */
-  my_snprintf(buf, sizeof(buf), "perl %s/tmp/tmp_%d.pl",
-              getenv("MYSQLTEST_VARDIR"), getpid());
+  str_to_file(temp_file_path, ds_script.str, ds_script.length);
+
+  /* Format the "perl <filename>" command */
+  my_snprintf(buf, sizeof(buf), "perl %s", temp_file_path);
 
   if (!(res_file= popen(buf, "r")) && command->abort_on_error)
     die("popen(\"%s\", \"r\") failed", buf);
@@ -2670,6 +3030,10 @@ void do_perl(struct st_command *command)
     }
   }
   error= pclose(res_file);
+
+  /* Remove the temporary file */
+  my_delete(temp_file_path, MYF(0));
+
   handle_command_error(command, WEXITSTATUS(error));
   dynstr_free(&ds_script);
   dynstr_free(&ds_delimiter);
@@ -3795,7 +4159,7 @@ void do_connect(struct st_command *command)
   mysql_options(&con_slot->mysql, MYSQL_SET_CHARSET_NAME,
                 charset_info->csname);
   if (opt_charsets_dir)
-    mysql_options(&cur_con->mysql, MYSQL_SET_CHARSET_DIR,
+    mysql_options(&con_slot->mysql, MYSQL_SET_CHARSET_DIR,
                   opt_charsets_dir);
 
 #ifdef HAVE_OPENSSL
@@ -4408,7 +4772,7 @@ void check_eol_junk(const char *eol)
   terminated by new line '\n' regardless how many "delimiter" it contain.
 */
 
-#define MAX_QUERY (256*1024) /* 256K -- a test in sp-big is >128K */
+#define MAX_QUERY (256*1024*2) /* 256K -- a test in sp-big is >128K */
 static char read_command_buf[MAX_QUERY];
 
 int read_command(struct st_command** command_ptr)
@@ -4456,9 +4820,13 @@ int read_command(struct st_command** command_ptr)
   if (!(command->query_buf= command->query= my_strdup(p, MYF(MY_WME))))
     die("Out of memory");
 
-  /* Calculate first word and first argument */
-  for (p= command->query; *p && !my_isspace(charset_info, *p) ; p++) ;
+  /* Calculate first word length(the command), terminated by space or ( */
+  p= command->query;
+  while (*p && !my_isspace(charset_info, *p) && *p != '(')
+    p++;
   command->first_word_len= (uint) (p - command->query);
+  DBUG_PRINT("info", ("first_word: %.*s",
+                      command->first_word_len, command->query));
 
   /* Skip spaces between command and first argument */
   while (*p && my_isspace(charset_info, *p))
@@ -4542,6 +4910,10 @@ static struct my_option my_long_options[] =
   {"sp-protocol", OPT_SP_PROTOCOL, "Use stored procedures for select",
    (gptr*) &sp_protocol, (gptr*) &sp_protocol, 0,
    GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
+  {"tail-lines", OPT_TAIL_LINES,
+   "Number of lines of the resul to include in a failure report",
+   (gptr*) &opt_tail_lines, (gptr*) &opt_tail_lines, 0,
+   GET_INT, REQUIRED_ARG, 0, 0, 10000, 0, 0, 0},
 #include "sslopt-longopts.h"
   {"test-file", 'x', "Read test from/in this file (default stdin).",
    0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
@@ -4793,14 +5165,6 @@ void str_to_file(const char *fname, char *str, int size)
 }
 
 
-void dump_result_to_reject_file(char *buf, int size)
-{
-  char reject_file[FN_REFLEN];
-  str_to_file(fn_format(reject_file, result_file_name, "", ".reject",
-                        MY_REPLACE_EXT),
-              buf, size);
-}
-
 void dump_result_to_log_file(char *buf, int size)
 {
   char log_file[FN_REFLEN];
@@ -4808,6 +5172,8 @@ void dump_result_to_log_file(char *buf, int size)
                         *opt_logdir ? MY_REPLACE_DIR | MY_REPLACE_EXT :
                         MY_REPLACE_EXT),
               buf, size);
+  fprintf(stderr, "\nMore results from queries before failure can be found in %s\n",
+          log_file);
 }
 
 void dump_progress(void)
@@ -5792,7 +6158,7 @@ void run_query(struct st_connection *cn, struct st_command *command, int flags)
 
   init_dynamic_string(&ds_warnings, NULL, 0, 256);
 
-  /* Scan for warning before sendign to server */
+  /* Scan for warning before sending to server */
   scan_command_for_warnings(command);
 
   /*
@@ -6224,7 +6590,6 @@ int main(int argc, char **argv)
   connections_end= connections +
     (sizeof(connections)/sizeof(struct st_connection)) - 1;
   next_con= connections + 1;
-  cur_con= connections;
 
 #ifdef EMBEDDED_LIBRARY
   /* set appropriate stack for the 'query' threads */
@@ -6300,6 +6665,7 @@ int main(int argc, char **argv)
   if (cursor_protocol_enabled)
     ps_protocol_enabled= 1;
 
+  cur_con= connections;
   if (!( mysql_init(&cur_con->mysql)))
     die("Failed in mysql_init()");
   if (opt_compress)
@@ -6424,7 +6790,7 @@ int main(int argc, char **argv)
         break;
       case Q_LET: do_let(command); break;
       case Q_EVAL_RESULT:
-        eval_result = 1; break;
+        die("'eval_result' command  is deprecated");
       case Q_EVAL:
       case Q_QUERY_VERTICAL:
       case Q_QUERY_HORIZONTAL:

mysql-test/lib/mtr_process.pl

@@ -99,25 +99,26 @@ sub spawn_impl ($$$$$$$) {
 
   if ( $::opt_script_debug )
   {
-    print STDERR "\n";
-    print STDERR "#### ", "-" x 78, "\n";
-    print STDERR "#### ", "STDIN  $input\n" if $input;
-    print STDERR "#### ", "STDOUT $output\n" if $output;
-    print STDERR "#### ", "STDERR $error\n" if $error;
-    print STDERR "#### ", "$mode : $path ", join(" ",@$arg_list_t), "\n";
-    print STDERR "#### ", "spawn options:\n";
+    mtr_report("");
+    mtr_debug("-" x 73);
+    mtr_debug("STDIN  $input") if $input;
+    mtr_debug("STDOUT $output") if $output;
+    mtr_debug("STDERR $error") if $error;
+    mtr_debug("$mode: $path ", join(" ",@$arg_list_t));
+    mtr_debug("spawn options:");
     if ($spawn_opts)
     {
       foreach my $key (sort keys %{$spawn_opts})
       {
-        print STDERR "#### ", "  - $key: $spawn_opts->{$key}\n";
+        mtr_debug("  - $key: $spawn_opts->{$key}");
       }
     }
     else
     {
-      print STDERR "#### ", "  none\n";
+      mtr_debug("  none");
     }
-    print STDERR "#### ", "-" x 78, "\n";
+    mtr_debug("-" x 73);
+    mtr_report("");
   }
 
   mtr_error("Can't spawn with empty \"path\"") unless defined $path;

mysql-test/lib/mtr_report.pl

@@ -19,6 +19,7 @@
 # same name.
 
 use strict;
+use warnings;
 
 sub mtr_report_test_name($);
 sub mtr_report_test_passed($);
@@ -26,7 +27,6 @@ sub mtr_report_test_failed($);
 sub mtr_report_test_skipped($);
 sub mtr_report_test_not_skipped_though_disabled($);
 
-sub mtr_show_failed_diff ($);
 sub mtr_report_stats ($);
 sub mtr_print_line ();
 sub mtr_print_thick_line ();
@@ -38,6 +38,9 @@ sub mtr_child_error (@);
 sub mtr_debug (@);
 sub mtr_verbose (@);
 
+my $tot_real_time= 0;
+
+
 
 ##############################################################################
 #
@@ -45,58 +48,10 @@ sub mtr_verbose (@);
 #
 ##############################################################################
 
-# We can't use diff -u or diff -a as these are not portable
-
-sub mtr_show_failed_diff ($) {
-  my $result_file_name=  shift;
-
-  # The reject and log files have been dumped to
-  # to filenames based on the result_file's name
-  my $tname= basename($result_file_name);
-  $tname=~ s/\..*$//;
-
-  my $reject_file=  "r/$tname.reject";
-  my $result_file=  "r/$tname.result";
-  my $log_file=  "r/$tname.log";
-  my $eval_file=    "r/$tname.eval";
-
-  if ( $::opt_suite ne "main" )
-  {
-    $reject_file= "$::glob_mysql_test_dir/suite/$::opt_suite/$reject_file";
-    $result_file= "$::glob_mysql_test_dir/suite/$::opt_suite/$result_file";
-    $eval_file=   "$::glob_mysql_test_dir/suite/$::opt_suite/$eval_file";
-    $log_file=   "$::glob_mysql_test_dir/suite/$::opt_suite/$log_file";
-  }
-
-  if ( -f $eval_file )
-  {
-    $result_file=  $eval_file;
-  }
-
-  my $diffopts= $::opt_udiff ? "-u" : "-c";
-
-  if ( -f $reject_file )
-  {
-    print "Below are the diffs between actual and expected results:\n";
-    print "-------------------------------------------------------\n";
-    # FIXME check result code?!
-    mtr_run("diff",[$diffopts,$result_file,$reject_file], "", "", "", "");
-    print "-------------------------------------------------------\n";
-    print "Please follow the instructions outlined at\n";
-    print "http://www.mysql.com/doc/en/Reporting_mysqltest_bugs.html\n";
-    print "to find the reason to this problem and how to report this.\n\n";
-  }
-
-  if ( -f $log_file )
-  {
-    print "Result from queries before failure can be found in $log_file\n";
-    # FIXME Maybe a tail -f -n 10 $log_file here
-  }
-}
-
 sub mtr_report_test_name ($) {
   my $tinfo= shift;
 
+  _mtr_log("$tinfo->{name}");
   printf "%-30s ", $tinfo->{'name'};
 }
 
@@ -106,15 +61,15 @@ sub mtr_report_test_skipped ($) {
   $tinfo->{'result'}= 'MTR_RES_SKIPPED';
   if ( $tinfo->{'disable'} )
   {
-    print "[ disabled ]  $tinfo->{'comment'}\n";
+    mtr_report("[ disabled ]  $tinfo->{'comment'}");
   }
   elsif ( $tinfo->{'comment'} )
   {
-    print "[ skipped ]   $tinfo->{'comment'}\n";
+    mtr_report("[ skipped ]   $tinfo->{'comment'}");
   }
   else
   {
-    print "[ skipped ]\n";
+    mtr_report("[ skipped ]");
   }
 }
 
@@ -142,11 +97,11 @@ sub mtr_report_test_passed ($) {
   if ( $::opt_timer and -f "$::opt_vardir/log/timer" )
   {
     $timer= mtr_fromfile("$::opt_vardir/log/timer");
-    $::glob_tot_real_time += ($timer/1000);
+    $tot_real_time += ($timer/1000);
     $timer= sprintf "%12s", $timer;
   }
   $tinfo->{'result'}= 'MTR_RES_PASSED';
-  print "[ pass ]   $timer\n";
+  mtr_report("[ pass ]   $timer");
 }
 
 sub mtr_report_test_failed ($) {
@@ -155,27 +110,34 @@ sub mtr_report_test_failed ($) {
   $tinfo->{'result'}= 'MTR_RES_FAILED';
   if ( defined $tinfo->{'timeout'} )
   {
-    print "[ fail ]  timeout\n";
+    mtr_report("[ fail ]  timeout");
     return;
   }
   else
   {
-    print "[ fail ]\n";
+    mtr_report("[ fail ]");
   }
 
   if ( $tinfo->{'comment'} )
   {
-    print "\nERROR: $tinfo->{'comment'}\n";
+    # The test failure has been detected by mysql-test-run.pl
+    # when starting the servers or due to other error, the reason for
+    # failing the test is saved in "comment"
+    mtr_report("\nERROR: $tinfo->{'comment'}");
   }
   elsif ( -f $::path_timefile )
   {
-    print "\nErrors are (from $::path_timefile) :\n";
+    # Test failure was detected by test tool and it's report
+    # about what failed has been saved to file. Display the report.
+    print "\n";
     print mtr_fromfile($::path_timefile); # FIXME print_file() instead
-    print "\n(the last lines may be the most important ones)\n";
+    print "\n";
   }
   else
   {
-    print "\nUnexpected termination, probably when starting mysqld\n";
+    # Neither this script or the test tool has recorded info
+    # about why the test has failed. Should be debugged.
+    mtr_report("\nUnexpected termination, probably when starting mysqld");;
   }
 }
 
@@ -243,8 +205,10 @@ sub mtr_report_stats ($) {
 
   if ( $::opt_timer )
   {
-    print
-      "Spent $::glob_tot_real_time seconds actually executing testcases\n"
+    use English;
+
+    mtr_report("Spent", sprintf("%.3f", $tot_real_time),"of",
+	       time - $BASETIME, "seconds executing testcases");
   }
 
   # ----------------------------------------------------------------------
@@ -397,35 +361,66 @@ sub mtr_print_header () {
 
 ##############################################################################
 #
-#  Misc
+#  Log and reporting functions
 #
 ##############################################################################
 
+use IO::File;
+
+my $log_file_ref= undef;
+
+sub mtr_log_init ($) {
+  my ($filename)= @_;
+
+  mtr_error("Log is already open") if defined $log_file_ref;
+
+  $log_file_ref= IO::File->new($filename, "a") or
+    mtr_warning("Could not create logfile $filename: $!");
+}
+
+sub _mtr_log (@) {
+  print $log_file_ref join(" ", @_),"\n"
+    if defined $log_file_ref;
+}
+
 sub mtr_report (@) {
+  # Print message to screen and log
+  _mtr_log(@_);
   print join(" ", @_),"\n";
 }
 
 sub mtr_warning (@) {
+  # Print message to screen and log
+  _mtr_log("WARNING: ", @_);
   print STDERR "mysql-test-run: WARNING: ",join(" ", @_),"\n";
 }
 
 sub mtr_error (@) {
+  # Print message to screen and log
+  _mtr_log("ERROR: ", @_);
   print STDERR "mysql-test-run: *** ERROR: ",join(" ", @_),"\n";
   mtr_exit(1);
 }
 
 sub mtr_child_error (@) {
+  # Print message to screen and log
+  _mtr_log("ERROR(child): ", @_);
   print STDERR "mysql-test-run: *** ERROR(child): ",join(" ", @_),"\n";
   exit(1);
 }
 
 sub mtr_debug (@) {
+  # Only print if --script-debug is used
   if ( $::opt_script_debug )
   {
+    _mtr_log("###: ", @_);
     print STDERR "####: ",join(" ", @_),"\n";
   }
 }
+
 sub mtr_verbose (@) {
+  # Always print to log, print to screen only when --verbose is used
+  _mtr_log("> ",@_);
   if ( $::opt_verbose )
   {
     print STDERR "> ",join(" ", @_),"\n";

mysql-test/lib/mtr_timer.pl

@@ -52,12 +52,10 @@ sub mtr_init_timers () {
 sub mtr_timer_start($$$) {
   my ($timers,$name,$duration)= @_;
 
-  mtr_verbose("mtr_timer_start: $name, $duration");
-
   if ( exists $timers->{'timers'}->{$name} )
   {
     # We have an old running timer, kill it
-    mtr_verbose("There is an old timer running");
+    mtr_warning("There is an old timer running");
     mtr_timer_stop($timers,$name);
   }
 
@@ -75,22 +73,22 @@ sub mtr_timer_start($$$) {
       }
       else
       {
-        mtr_error("can't fork");
+        mtr_error("can't fork timer, error: $!");
       }
     }
 
     if ( $tpid )
     {
       # Parent, record the information
-      mtr_verbose("timer parent, record info($name, $tpid, $duration)");
+      mtr_verbose("Starting timer for '$name',",
+		  "duration: $duration, pid: $tpid");
       $timers->{'timers'}->{$name}->{'pid'}= $tpid;
       $timers->{'timers'}->{$name}->{'duration'}= $duration;
       $timers->{'pids'}->{$tpid}= $name;
     }
     else
     {
-      # Child, redirect output and exec
-      # FIXME do we need to redirect streams?
+      # Child, install signal handlers and sleep for "duration"
 
       # Don't do the ^C cleanup in the timeout child processes!
       # There is actually a race here, if we get ^C after fork(), but before
@@ -98,13 +96,13 @@ sub mtr_timer_start($$$) {
       $SIG{INT}= 'DEFAULT';
 
       $SIG{TERM}= sub {
-	mtr_verbose("timer woke up, exiting!");
+	mtr_verbose("timer $$ woke up, exiting!");
 	exit(0);
       };
 
       $0= "mtr_timer(timers,$name,$duration)";
       sleep($duration);
-      mtr_verbose("timer expired after $duration seconds");
+      mtr_verbose("timer $$ expired after $duration seconds");
       exit(0);
     }
   }
@@ -114,12 +112,10 @@ sub mtr_timer_start($$$) {
 sub mtr_timer_stop ($$) {
   my ($timers,$name)= @_;
 
-  mtr_verbose("mtr_timer_stop: $name");
-
   if ( exists $timers->{'timers'}->{$name} )
   {
     my $tpid= $timers->{'timers'}->{$name}->{'pid'};
-    mtr_verbose("Stopping timer with pid $tpid");
+    mtr_verbose("Stopping timer for '$name' with pid $tpid");
 
     # FIXME as Cygwin reuses pids fast, maybe check that is
     # the expected process somehow?!
@@ -134,11 +130,8 @@ sub mtr_timer_stop ($$) {
 
     return 1;
   }
-  else
-  {
-    mtr_error("Asked to stop timer \"$name\" not started");
-    return 0;
-  }
+
+  mtr_error("Asked to stop timer '$name' not started");
 }
 
 
@@ -158,7 +151,8 @@ sub mtr_timer_timeout ($$) {
 
   return "" unless exists $timers->{'pids'}->{$pid};
 
-  # We got a timeout, return the name ot the timer
+  # Got a timeout(the process with $pid is recorded as being a timer)
+  # return the name of the timer
   return $timers->{'pids'}->{$pid};
 }
 

mysql-test/mysql-test-run.pl

@@ -83,7 +83,6 @@ require "lib/mtr_io.pl";
 require "lib/mtr_gcov.pl";
 require "lib/mtr_gprof.pl";
 require "lib/mtr_report.pl";
-require "lib/mtr_diff.pl";
 require "lib/mtr_match.pl";
 require "lib/mtr_misc.pl";
 require "lib/mtr_stress.pl";
@@ -282,8 +281,6 @@ our $opt_wait_for_slave;
 
 our $opt_warnings;
 
-our $opt_udiff;
-
 our $opt_skip_ndbcluster= 0;
 our $opt_skip_ndbcluster_slave= 0;
 our $opt_with_ndbcluster= 0;
@@ -307,7 +304,6 @@ our @data_dir_lst;
 our $used_binlog_format;
 our $used_default_engine;
 our $debug_compiled_binaries;
-our $glob_tot_real_time= 0;
 
 our %mysqld_variables;
 
@@ -620,7 +616,6 @@ sub command_line_setup () {
              'start-dirty'              => \$opt_start_dirty,
              'start-and-exit'           => \$opt_start_and_exit,
              'timer!'                   => \$opt_timer,
-             'unified-diff|udiff'       => \$opt_udiff,
              'user=s'                   => \$opt_user,
              'testcase-timeout=i'       => \$opt_testcase_timeout,
              'suite-timeout=i'          => \$opt_suite_timeout,
@@ -2905,6 +2900,9 @@ sub initialize_servers () {
     }
   }
   check_running_as_root();
+
+  mtr_log_init("$opt_vardir/log/mysql-test-run.log");
+
 }
 
 sub mysql_install_db () {
@@ -3617,7 +3615,6 @@ sub report_failure_and_restart ($) {
   my $tinfo= shift;
 
   mtr_report_test_failed($tinfo);
-  mtr_show_failed_diff($tinfo->{'result_file'});
   print "\n";
   if ( $opt_force )
   {
@@ -3626,13 +3623,13 @@ sub report_failure_and_restart ($) {
 
     # Restore the snapshot of the installed test db
     restore_installed_db($tinfo->{'name'});
-    print "Resuming Tests\n\n";
+    mtr_report("Resuming Tests\n");
     return;
   }
 
   my $test_mode= join(" ", @::glob_test_mode) || "default";
-  print "Aborting: $tinfo->{'name'} failed in $test_mode mode. ";
-  print "To continue, re-run with '--force'.\n";
+  mtr_report("Aborting: $tinfo->{'name'} failed in $test_mode mode. ");
+  mtr_report("To continue, re-run with '--force'.");
   if ( ! $glob_debugger and
        ! $opt_extern and
        ! $glob_use_embedded_server )
@@ -4090,11 +4087,11 @@ sub mysqld_start ($$$) {
 
 sub stop_all_servers () {
 
-  print  "Stopping All Servers\n";
+  mtr_report("Stopping All Servers");
 
   if ( ! $opt_skip_im )
   {
-    print  "Shutting-down Instance Manager\n";
+    mtr_report("Shutting-down Instance Manager");
     unless (mtr_im_stop($instance_manager, "stop_all_servers"))
     {
       mtr_error("Failed to stop Instance Manager.")
@@ -4802,6 +4799,9 @@ sub run_mysqltest ($) {
 
   mtr_add_arg($args, "--test-file=%s", $tinfo->{'path'});
 
+  # Number of lines of resut to include in failure report
+  mtr_add_arg($args, "--tail-lines=20");
+
   if ( defined $tinfo->{'result_file'} ) {
     mtr_add_arg($args, "--result-file=%s", $tinfo->{'result_file'});
   }
@@ -5213,7 +5213,6 @@ Misc options
   fast                  Don't try to clean up from earlier runs
   reorder               Reorder tests to get fewer server restarts
   help                  Get this help text
-  unified-diff | udiff  When presenting differences, use unified diff
 
   testcase-timeout=MINUTES Max test case run time (default $default_testcase_timeout)
   suite-timeout=MINUTES Max test suite run time (default $default_suite_timeout)

mysql-test/r/mysqltest.result

@@ -280,6 +280,18 @@ let $B = changed value of B;
 var2: content of variable 1
 var3: content of variable 1 content of variable 1
 length of var3 is longer than 0
+var1
+hi	1	hi there
+var2
+2
+var2 again
+2
+var3 two columns with same name
+1	2	3
+var4 from query that returns NULL
+var5 from query that returns no row
+failing query in let
+mysqltest: At line 1: Error running query 'failing query': 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'failing query' at line 1
 mysqltest: At line 1: Missing required argument 'filename' to command 'source'
 mysqltest: At line 1: Could not open file ./non_existingFile
 mysqltest: In included file "MYSQLTEST_VARDIR/tmp/recursive.sql": At line 1: Source directives are nesting too deep
@@ -461,7 +473,6 @@ root@localhost
 --------------------------------------------------------------------------------
 this will be executed
 this will be executed
-mysqltest: Result length mismatch
 mysqltest: The test didn't produce any output
 Failing multi statement query
 mysqltest: At line 3: query 'create table t1 (a int primary key);
@@ -473,6 +484,8 @@ mysqltest: At line 3: query 'create table t1 (a int primary key);
 insert into t1 values (1);
 select 'select-me';
 insertz 'error query'' failed: 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'insertz 'error query'' at line 1
+
+More results from queries before failure can be found in MYSQLTEST_VARDIR/tmp/bug11731.log
 drop table t1;
 Multi statement using expected error
 create table t1 (a int primary key);
@@ -520,6 +533,8 @@ drop table t1;
 mysqltest: At line 1: Missing required argument 'filename' to command 'remove_file'
 mysqltest: At line 1: Missing required argument 'filename' to command 'write_file'
 mysqltest: At line 1: End of file encountered before 'EOF' delimiter was found
+Content for test_file1
+mysqltest: At line 1: File already exist: 'MYSQLTEST_VARDIR/tmp/test_file1.tmp'
 Some data
 for cat_file command
 of mysqltest
@@ -530,7 +545,7 @@ mysqltest: At line 1: Missing required argument 'to_file' to command 'copy_file'
 mysqltest: At line 1: Missing required argument 'mode' to command 'chmod'
 mysqltest: At line 1: You must write a 4 digit octal number for mode
 mysqltest: At line 1: You must write a 4 digit octal number for mode
-mysqltest: At line 1: Missing required argument 'file' to command 'chmod'
+mysqltest: At line 1: Missing required argument 'filename' to command 'chmod'
 mysqltest: At line 1: You must write a 4 digit octal number for mode
 mysqltest: At line 1: You must write a 4 digit octal number for mode
 hello

mysql-test/r/sp.result

@@ -5748,6 +5748,7 @@ bug23760_rc_test(ROW_COUNT())
 DROP TABLE bug23760, bug23760_log|
 DROP PROCEDURE bug23760_update_log|
 DROP PROCEDURE bug23760_test_row_count|
+DROP PROCEDURE bug23760_test_row_count2|
 DROP FUNCTION bug23760_rc_test|
 DROP PROCEDURE IF EXISTS bug24117|
 DROP TABLE IF EXISTS t3|

mysql-test/t/bootstrap.test

@@ -9,12 +9,13 @@ drop table if exists t1;
 #
 # Check that --bootstrap reads from stdin
 #
---write_file $MYSQLTEST_VARDIR/tmp/bootstrap.sql
+--write_file $MYSQLTEST_VARDIR/tmp/bootstrap_test.sql
 use test;
 CREATE TABLE t1(a int);
 EOF
---exec $MYSQLD_BOOTSTRAP_CMD < $MYSQLTEST_VARDIR/tmp/bootstrap.sql >> $MYSQLTEST_VARDIR/tmp/bootstrap.log 2>&1
+--exec $MYSQLD_BOOTSTRAP_CMD < $MYSQLTEST_VARDIR/tmp/bootstrap_test.sql >> $MYSQLTEST_VARDIR/tmp/bootstrap.log 2>&1
 drop table t1;
+remove_file $MYSQLTEST_VARDIR/tmp/bootstrap_test.sql;
 
 #
 # Check that --bootstrap of file with SQL error returns error
@@ -28,6 +29,7 @@ EOF
 # Table t1 should not exists
 --error 1051
 drop table t1;
+remove_file $MYSQLTEST_VARDIR/tmp/bootstrap_error.sql;
 
 #
 # Bootstrap with a query larger than 2*thd->net.max_packet
@@ -40,6 +42,7 @@ eval select * into outfile '$MYSQLTEST_VARDIR/tmp/long_query.sql' from t1;
 --enable_query_log
 --error 1
 --exec $MYSQLD_BOOTSTRAP_CMD < $MYSQLTEST_VARDIR/tmp/long_query.sql >> $MYSQLTEST_VARDIR/tmp/bootstrap.log 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/long_query.sql;
 
 set global max_allowed_packet=@my_max_allowed_packet;
 drop table t1;

mysql-test/t/mysql.test

@@ -241,18 +241,21 @@ DELIMITER /
 SELECT 1/
 EOF
 --exec $MYSQL             < $MYSQLTEST_VARDIR/tmp/bug21412.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/bug21412.sql;
 
 # This should give an error...
 --write_file $MYSQLTEST_VARDIR/tmp/bug21412.sql
 DELIMITER \
 EOF
 --exec $MYSQL             < $MYSQLTEST_VARDIR/tmp/bug21412.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/bug21412.sql;
 
 # As should this...
 --write_file $MYSQLTEST_VARDIR/tmp/bug21412.sql
 DELIMITER \\
 EOF
 --exec $MYSQL             < $MYSQLTEST_VARDIR/tmp/bug21412.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/bug21412.sql;
 
 #
 # Some coverage of not normally used parts

mysql-test/t/mysqladmin.test

@@ -20,7 +20,7 @@ EOF
 --replace_regex /.*mysqladmin.*: unknown/mysqladmin: unknown/
 --error 7
 --exec $MYSQLADMIN --defaults-file=$MYSQLTEST_VARDIR/tmp/bug10608.cnf -S $MASTER_MYSOCK -P $MASTER_MYPORT  -u root --password= ping 2>&1
-
+remove_file $MYSQLTEST_VARDIR/tmp/bug10608.cnf;
 
 # When mysqladmin finds "loose-database" in .cnf file it shall print
 # a warning and continue
@@ -32,3 +32,4 @@ EOF
 --replace_regex /Warning: .*mysqladmin.*: unknown/Warning: mysqladmin: unknown/
 --exec $MYSQLADMIN --defaults-file=$MYSQLTEST_VARDIR/tmp/bug10608.cnf -S $MASTER_MYSOCK -P $MASTER_MYPORT  -u root --password= ping 2>&1
 
+remove_file $MYSQLTEST_VARDIR/tmp/bug10608.cnf;

mysql-test/t/mysqltest.test

@@ -366,6 +366,7 @@ show status;
 EOF
 --error 1
 --exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 
 #
 # Missing delimiter until eof
@@ -377,6 +378,7 @@ sleep 7
 EOF
 --error 1
 --exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 
 #
 # Missing delimiter until "disable_query_log"
@@ -391,6 +393,7 @@ disable_query_log;
 EOF
 --error 1
 --exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 
 #
 # Missing delimiter until "disable_query_log"
@@ -406,6 +409,7 @@ disable_query_log;
 EOF
 --error 1
 --exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 
 #
 # Missing delimiter until eof
@@ -422,6 +426,7 @@ disconnect default
 EOF
 --error 1
 --exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 
 #
 # Missing delimiter until eof
@@ -436,6 +441,8 @@ EOF
 --error 1
 --exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
 
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
+
 #
 # Extra delimiter
 #
@@ -734,38 +741,40 @@ if (`select length("$var3") > 0`)
 # Test to assign let from query
 # let $<var_name>=`<query>`;
 # ----------------------------------------------------------------------------
---disable_parsing
 echo var1;
 let $var1= `select "hi" as "Col", 1 as "Column1", "hi there" as Col3`;
 echo $var1;
-echo $var1_Col;
-echo $var1_Column1;
-echo $var1_Col3;
 
 echo var2;
 let $var2= `select 2 as "Column num 2"`;
 echo $var2;
-echo $var2_Column num 2;
-echo $var2_Column;
 
 echo var2 again;
 let $var2= `select 2 as "Column num 2"`;
 echo $var2;
-echo $var2_Column num 2;
-echo $var2_Column_num_2;
-echo $var2_Column;
 
 echo var3 two columns with same name;
 let $var3= `select 1 as "Col", 2 as "Col", 3 as "var3"`;
 echo $var3;
-echo $var3_Col;
-echo $var3_Col;
-echo $var3_var3;
 
-#echo failing query in let;
-#--error 1
-#--exec echo "let $var2= `failing query;`" | $MYSQL_TEST 2>&1
---enable_parsing
+echo var4 from query that returns NULL;
+let $var4= `select NULL`;
+
+echo var5 from query that returns no row;
+let $var5= `SHOW VARIABLES LIKE "nonexisting_variable"`;
+
+echo failing query in let;
+--write_file $MYSQLTEST_VARDIR/tmp/let.sql
+let $var2= `failing query`;
+echo $var2;
+EOF
+
+--error 1
+--exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/let.sql 2>&1
+
+remove_file $MYSQLTEST_VARDIR/tmp/let.sql;
+
+
 # ----------------------------------------------------------------------------
 # Test source command
 # ----------------------------------------------------------------------------
@@ -786,6 +795,7 @@ echo $var3_var3;
 --replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
 --error 1
 --exec echo "source $MYSQLTEST_VARDIR/tmp/recursive.sql;" | $MYSQL_TEST 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/recursive.sql;
 
 # Source a file with error
 --exec echo "garbage ;" > $MYSQLTEST_VARDIR/tmp/error.sql
@@ -793,6 +803,7 @@ echo $var3_var3;
 --error 1
 --exec echo "source $MYSQLTEST_VARDIR/tmp/error.sql;" | $MYSQL_TEST 2>&1
 
+remove_file $MYSQLTEST_VARDIR/tmp/error.sql;
 
 # Test execution of source in a while loop
 --write_file $MYSQLTEST_VARDIR/tmp/sourced.inc
@@ -963,7 +974,7 @@ if (!$counter)
   echo Counter is not 0, (counter=10);
 }
 let $counter=0;
-if ($counter)
+if($counter)
 {
   echo Counter is greater than 0, (counter=0);
 }
@@ -1156,6 +1167,7 @@ echo hej;
 EOF
 --error 1
 --exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 
 --write_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql
 while (0)
@@ -1163,6 +1175,7 @@ while (0)
 EOF
 --error 1
 --exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 
 --write_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql
 while (0){
@@ -1171,6 +1184,8 @@ EOF
 --error 1
 --exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/mysqltest.sql 2>&1
 
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
+
 # ----------------------------------------------------------------------------
 # Test error messages returned from comments starting with a command
 # ----------------------------------------------------------------------------
@@ -1262,6 +1277,7 @@ while ($i)
 }
 EOF
 --exec echo "source $MYSQLTEST_VARDIR/tmp/mysqltest.sql; echo OK;" | $MYSQL_TEST 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 
 # Repeat connect/disconnect
 --write_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql
@@ -1276,6 +1292,7 @@ EOF
 --replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
 --error 1
 --exec echo "source $MYSQLTEST_VARDIR/tmp/mysqltest.sql;" | $MYSQL_TEST 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 
 # Select disconnected connection
 --write_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql
@@ -1286,6 +1303,7 @@ EOF
 --replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
 --error 1
 --exec echo "source $MYSQLTEST_VARDIR/tmp/mysqltest.sql;" | $MYSQL_TEST 2>&1
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
 
 # Connection name already used
 --write_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql
@@ -1296,6 +1314,8 @@ EOF
 --error 1
 --exec echo "source $MYSQLTEST_VARDIR/tmp/mysqltest.sql;" | $MYSQL_TEST 2>&1
 
+remove_file $MYSQLTEST_VARDIR/tmp/mysqltest.sql;
+
 # connect when "disable_abort_on_error" caused "connection not found"
 --replace_result $MASTER_MYSOCK MASTER_SOCKET $MASTER_MYPORT MASTER_PORT
 --disable_abort_on_error
@@ -1399,7 +1419,11 @@ select "this will be executed";
 --exec touch $MYSQLTEST_VARDIR/tmp/zero_length_file.result
 --exec echo "echo ok;" > $MYSQLTEST_VARDIR/tmp/query.sql
 --error 1
---exec $MYSQL_TEST -x $MYSQLTEST_VARDIR/tmp/query.sql -R $MYSQLTEST_VARDIR/tmp/zero_length_file.result  2>&1
+--exec $MYSQL_TEST -x $MYSQLTEST_VARDIR/tmp/query.sql -R $MYSQLTEST_VARDIR/tmp/zero_length_file.result  > /dev/null 2>&1
+
+remove_file $MYSQLTEST_VARDIR/tmp/zero_length_file.result;
+remove_file $MYSQLTEST_VARDIR/tmp/zero_length_file.reject;
+
 #
 # Test that a test file that does not generate any output fails.
 #
@@ -1407,6 +1431,8 @@ select "this will be executed";
 --error 1
 --exec $MYSQL_TEST -x $MYSQLTEST_VARDIR/tmp/query.sql  2>&1
 
+remove_file $MYSQLTEST_VARDIR/tmp/query.sql;
+
 #
 # Test that mysqltest fails when there are no queries executed
 # but a result file exists
@@ -1436,6 +1462,7 @@ echo Failing multi statement query;
 --exec $MYSQL_TEST -x $MYSQLTEST_VARDIR/tmp/bug11731.sql 2>&1
 drop table t1;
 
+--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
 --error 1
 --exec $MYSQL_TEST --record -x $MYSQLTEST_VARDIR/tmp/bug11731.sql -R $MYSQLTEST_VARDIR/tmp/bug11731.out 2>&1
 # The .out file should be non existent
@@ -1462,6 +1489,9 @@ drop table t1;
 # The .out file should exist
 --exec test -s $MYSQLTEST_VARDIR/tmp/bug11731.out
 drop table t1;
+remove_file $MYSQLTEST_VARDIR/tmp/bug11731.out;
+remove_file $MYSQLTEST_VARDIR/tmp/bug11731.log;
+remove_file $MYSQLTEST_VARDIR/tmp/bug11731.sql;
 
 #
 # Bug#19890  	mysqltest: "query" command is broken
@@ -1544,12 +1574,19 @@ write_file $MYSQLTEST_VARDIR/tmp/test_file1.tmp;
 Content for test_file1
 EOF
 file_exists $MYSQLTEST_VARDIR/tmp/test_file1.tmp;
+cat_file $MYSQLTEST_VARDIR/tmp/test_file1.tmp;
 remove_file $MYSQLTEST_VARDIR/tmp/test_file1.tmp;
 
 write_file $MYSQLTEST_VARDIR/tmp/test_file1.tmp END_DELIMITER;
 Content for test_file1 contains EOF
 END_DELIMITER
 file_exists $MYSQLTEST_VARDIR/tmp/test_file1.tmp;
+
+# write to already exisiting file
+--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
+--error 1
+--exec echo "write_file $MYSQLTEST_VARDIR/tmp/test_file1.tmp;" | $MYSQL_TEST 2>&1
+
 remove_file $MYSQLTEST_VARDIR/tmp/test_file1.tmp;
 
 # ----------------------------------------------------------------------------
@@ -1571,6 +1608,8 @@ append_file $MYSQLTEST_VARDIR/tmp/test_file1.tmp;
 Appended text on nonexisting file
 EOF
 
+remove_file $MYSQLTEST_VARDIR/tmp/test_file1.tmp;
+
 # ----------------------------------------------------------------------------
 # test for cat_file
 # ----------------------------------------------------------------------------
@@ -1581,6 +1620,7 @@ for cat_file command
 of mysqltest
 EOF
 cat_file $MYSQLTEST_VARDIR/tmp/test_file1.tmp;
+remove_file $MYSQLTEST_VARDIR/tmp/test_file1.tmp;
 
 --error 1
 --exec echo "cat_file non_existing_file;" | $MYSQL_TEST 2>&1
@@ -1607,19 +1647,48 @@ for diff_file command
 of mysqltest
 EOF
 
+--write_file $MYSQLTEST_VARDIR/tmp/diff4.tmp
+Some data
+for diff_file command
+of musqltest
+EOF
+
 # Compare equal files
 --diff_files $MYSQLTEST_VARDIR/tmp/diff1.tmp $MYSQLTEST_VARDIR/tmp/diff2.tmp
 --diff_files $MYSQLTEST_VARDIR/tmp/diff2.tmp $MYSQLTEST_VARDIR/tmp/diff1.tmp
 
-# Compare files that differ
+# Write the below commands to a intermediary file and execute them with
+# mysqltest in --exec, since the output will vary depending on what "diff"
+# is available it is sent to /dev/null
+--write_file $MYSQLTEST_VARDIR/tmp/diff.test
+# Compare files that differ in size
+--error 2
+--diff_files $MYSQLTEST_VARDIR/tmp/diff1.tmp $MYSQLTEST_VARDIR/tmp/diff3.tmp
+--error 2
+--diff_files $MYSQLTEST_VARDIR/tmp/diff3.tmp $MYSQLTEST_VARDIR/tmp/diff1.tmp
+
+# Compare files that differ only in content
 --error 1
---diff_files $MYSQLTEST_VARDIR/tmp/diff3.tmp $MYSQLTEST_VARDIR/tmp/diff2.tmp
+--diff_files $MYSQLTEST_VARDIR/tmp/diff1.tmp $MYSQLTEST_VARDIR/tmp/diff4.tmp
 --error 1
---diff_files $MYSQLTEST_VARDIR/tmp/diff1.tmp $MYSQLTEST_VARDIR/tmp/diff3.tmp
+--diff_files $MYSQLTEST_VARDIR/tmp/diff4.tmp $MYSQLTEST_VARDIR/tmp/diff1.tmp
+EOF
+
+# Execute the above diffs, and send their output to /dev/null - only
+# interesting to see that it returns correct error codes
+--exec $MYSQL_TEST < $MYSQLTEST_VARDIR/tmp/diff.test > /dev/null 2>&1
+
 
 # Compare equal files, again...
 --diff_files $MYSQLTEST_VARDIR/tmp/diff1.tmp $MYSQLTEST_VARDIR/tmp/diff2.tmp
 
+--remove_file $MYSQLTEST_VARDIR/tmp/diff1.tmp
+--remove_file $MYSQLTEST_VARDIR/tmp/diff2.tmp
+--remove_file $MYSQLTEST_VARDIR/tmp/diff3.tmp
+--remove_file $MYSQLTEST_VARDIR/tmp/diff4.tmp
+--remove_file $MYSQLTEST_VARDIR/tmp/diff.test
+
+
 # ----------------------------------------------------------------------------
 # test for file_exist
 # ----------------------------------------------------------------------------
@@ -1672,6 +1741,7 @@ chmod 0000 $MYSQLTEST_VARDIR/tmp/file1.tmp;
 #EOF
 
 chmod 0777 $MYSQLTEST_VARDIR/tmp/file1.tmp;
+remove_file $MYSQLTEST_VARDIR/tmp/file1.tmp;
 --write_file $MYSQLTEST_VARDIR/tmp/file1.tmp
 test2
 EOF

mysql-test/t/sp-destruct.test

@@ -42,6 +42,7 @@ insert into t1 values (0);
 flush table mysql.proc;
 
 # Thrashing the .frm file
+--remove_file $MYSQLTEST_VARDIR/master-data/mysql/proc.frm
 --write_file $MYSQLTEST_VARDIR/master-data/mysql/proc.frm
 saljdfa
 EOF

mysql-test/t/sp.test

@@ -6715,6 +6715,7 @@ SELECT bug23760_rc_test(ROW_COUNT())|
 DROP TABLE bug23760, bug23760_log|
 DROP PROCEDURE bug23760_update_log|
 DROP PROCEDURE bug23760_test_row_count|
+DROP PROCEDURE bug23760_test_row_count2|
 DROP FUNCTION bug23760_rc_test|
 
 #