Bug #42144: plugin_load fails

The enum system variables were handled inconsistently 
as ints, unsigned int and unsigned long on various places.
This caused problems on platforms on which 
sizeof(int) != sizeof(long).
Fixed by homogenizing the type of the enum variables
to unsigned int, since it's size compatible with the C enum
type. 
Removed the test from the experimental list.

include/mysql/plugin.h

@@ -318,7 +318,7 @@ DECLARE_MYSQL_SYSVAR_SIMPLE(name, unsigned long long) = { \
   #name, comment, check, update, &varname, def, min, max, blk }
 
 #define MYSQL_SYSVAR_ENUM(name, varname, opt, comment, check, update, def, typelib) \
-DECLARE_MYSQL_SYSVAR_TYPELIB(name, unsigned long) = { \
+DECLARE_MYSQL_SYSVAR_TYPELIB(name, unsigned int) = { \
   PLUGIN_VAR_ENUM | ((opt) & PLUGIN_VAR_MASK), \
   #name, comment, check, update, &varname, def, typelib }
 

mysql-test/collections/default.experimental

@@ -14,7 +14,6 @@ funcs_2.ndb_charset                      # joro : NDB tests marked as experiment
 
 main.ctype_gbk_binlog  @solaris          # Bug#46010: main.ctype_gbk_binlog fails sporadically : Table 't2' already exists
 main.func_str  @solaris                  # joro: Bug#40928
-main.plugin_load  @solaris               # Bug#42144
 main.sp @solaris                         # joro : Bug#54138
 main.outfile_loaddata @solaris           # joro : Bug #46895
 

mysys/my_getopt.c

@@ -656,17 +656,21 @@ static int setval(const struct my_option *opts, void *value, char *argument,
 	return EXIT_OUT_OF_MEMORY;
       break;
     case GET_ENUM:
-      if (((*(int*)result_pos)=
-             find_type(argument, opts->typelib, 2) - 1) < 0)
+      {
+        int type= find_type(argument, opts->typelib, 2);
+        if (type < 1)
         {
           /*
             Accept an integer representation of the enumerated item.
           */
           char *endptr;
-        unsigned int arg= (unsigned int) strtol(argument, &endptr, 10);
+          uint arg= (uint) strtoul(argument, &endptr, 10);
           if (*endptr || arg >= opts->typelib->count)
             return EXIT_ARGUMENT_INVALID;
-        *(int*)result_pos= arg;
+          *(uint*)result_pos= arg;
+        }
+        else
+          *(uint*)result_pos= type - 1;
       }
       break;
     case GET_SET:

sql/sql_plugin.cc

@@ -3030,10 +3030,10 @@ static int construct_options(MEM_ROOT *mem_root, struct st_plugin_int *tmp,
     Allocate temporary space for the value of the tristate.
     This option will have a limited lifetime and is not used beyond
     server initialization.
-    GET_ENUM value is an integer.
+    GET_ENUM value is unsigned integer.
   */
   options[0].value= options[1].value= (uchar **)alloc_root(mem_root,
-                                                          sizeof(int));
+                                                          sizeof(uint));
   *((uint*) options[0].value)= *((uint*) options[1].value)=
     (uint) options[0].def_value;
 

storage/example/ha_example.cc

@@ -848,7 +848,7 @@ int ha_example::create(const char *name, TABLE *table_arg,
 struct st_mysql_storage_engine example_storage_engine=
 { MYSQL_HANDLERTON_INTERFACE_VERSION };
 
-static ulong srv_enum_var= 0;
+static uint srv_enum_var= 0;
 static ulong srv_ulong_var= 0;
 
 const char *enum_var_names[]=