Dump result to .log file at test failure

client/mysqltest.c:
  Dump accumulated result upuntil test failure into a <testname>.log file for later examination
mysql-test/lib/mtr_report.pl:
  Inform about the <testname>.log file's existence

client/mysqltest.c

@@ -427,6 +427,7 @@ static VAR* var_init(VAR* v, const char *name, int name_len, const char *val,
 static void var_free(void* v);
 
 void dump_result_to_reject_file(const char *record_file, char *buf, int size);
+void dump_result_to_log_file(const char *record_file, char *buf, int size);
 
 int close_connection(struct st_query*);
 static void set_charset(struct st_query*);
@@ -634,9 +635,9 @@ static void die(const char *fmt, ...)
   }
   va_end(args);
 
-  /* Dump the result that has been accumulated so far to reject file */
+  /* Dump the result that has been accumulated so far to .log file */
   if (result_file && ds_res.length)
-    dump_result_to_reject_file(result_file, ds_res.str, ds_res.length);
+    dump_result_to_log_file(result_file, ds_res.str, ds_res.length);
 
   /* Clean up and exit */
   free_used_memory();
@@ -3139,6 +3140,12 @@ void dump_result_to_reject_file(const char *record_file, char *buf, int size)
   str_to_file(fn_format(reject_file, record_file,"",".reject",2), buf, size);
 }
 
+void dump_result_to_log_file(const char *record_file, char *buf, int size)
+{
+  char log_file[FN_REFLEN];
+  str_to_file(fn_format(log_file, record_file,"",".log",2), buf, size);
+}
+
 
 #ifdef __WIN__
 

mysql-test/lib/mtr_report.pl

@@ -36,6 +36,7 @@ sub mtr_show_failed_diff ($) {
 
   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 ( $::opt_suite ne "main" )
@@ -43,6 +44,7 @@ sub mtr_show_failed_diff ($) {
     $reject_file= "$::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 $eval_file )
@@ -70,6 +72,12 @@ sub mtr_show_failed_diff ($) {
     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 ($) {