Fixed compiler warnings

client/mysqltest.cc:
  Added cast
plugin/feedback/utils.cc:
  Added #ifdef
sql/sql_select.cc:
  Added cast
sql/sys_vars.h:
  Changed limits to int
support-files/compiler_warnings.supp:
  Added suppression

client/mysqltest.cc

@@ -5144,7 +5144,7 @@ typedef struct
 
 static st_error global_error_names[] =
 {
-  { "<No error>", -1, "" },
+  { "<No error>", (uint) -1, "" },
 #include <mysqld_ername.h>
   { 0, 0, 0 }
 };

plugin/feedback/utils.cc

@@ -334,8 +334,10 @@ int prepare_linux_info()
 */
 int fill_linux_info(THD *thd, TABLE_LIST *tables)
 {
+#if defined(HAVE_SYS_UTSNAME_H) || defined(TARGET_OS_LINUX)
   TABLE *table= tables->table;
   CHARSET_INFO *cs= system_charset_info;
+#endif
 
 #ifdef HAVE_SYS_UTSNAME_H
   if (have_ubuf)

sql/sql_select.cc

@@ -6651,7 +6651,7 @@ double JOIN::get_examined_rows()
   while ((tab= next_breadth_first_tab(this, tab)))
   {
     prev_fanout *= prev_tab->records_read;
-    examined_rows+= tab->get_examined_rows() * prev_fanout;
+    examined_rows+= (ha_rows) (tab->get_examined_rows() * prev_fanout);
     prev_tab= tab;
   }
   return examined_rows;

sql/sys_vars.h

@@ -957,7 +957,7 @@ class Sys_var_max_user_conn: public Sys_var_int
   Sys_var_max_user_conn(const char *name_arg,
           const char *comment, int flag_args, ptrdiff_t off, size_t size,
           CMD_LINE getopt,
-          uint min_val, uint max_val, uint def_val,
+          int min_val, int max_val, uint def_val,
           uint block_size, PolyLock *lock=0,
           enum binlog_status_enum binlog_status_arg=VARIABLE_NOT_IN_BINLOG,
           on_check_function on_check_func=0,

support-files/compiler_warnings.supp

@@ -43,7 +43,7 @@ ut/ut0ut\.c: ignoring return value of
 srv/srv0srv\.c: value computed is not used
 buf/buf0buf\.c: .*block_mutex.* might be used uninitialized
 btr/btr0cur\.c: null argument where non-null required: 1800-3000
-btr/btr0btr\.c: null argument where non-null required: 2500-3000
+btr/btr0btr\.c: null argument where non-null required
 btr/btr0cur\.c: .*value computed is not used.*: 3175-3375
 btr/btr0sea\.c: passing argument 2 .* discards qualifiers from pointer target type
 ibuf/ibuf0ibuf.c: null argument where non-null required: 700-1000