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Fix unportable usage associated with va_list arguments. Passing "0" to
a va_list argument only works if va_list is an integer or pointer type,
which is not required by the C spec, and is not true on ARM for instance.
Per bug #744707.
diff -Naur mysql-5.5.16.orig/sql-common/client_plugin.c mysql-5.5.16/sql-common/client_plugin.c
--- mysql-5.5.16.orig/sql-common/client_plugin.c 2011-09-09 11:56:39.000000000 -0400
+++ mysql-5.5.16/sql-common/client_plugin.c 2011-10-16 23:00:00.708799138 -0400
@@ -228,11 +228,13 @@
{
MYSQL mysql;
struct st_mysql_client_plugin **builtin;
+ va_list unused;
if (initialized)
return 0;
bzero(&mysql, sizeof(mysql)); /* dummy mysql for set_mysql_extended_error */
+ bzero(&unused, sizeof(unused)); /* suppress uninitialized-value warnings */
pthread_mutex_init(&LOCK_load_client_plugin, MY_MUTEX_INIT_SLOW);
init_alloc_root(&mem_root, 128, 128);
@@ -244,7 +246,7 @@
pthread_mutex_lock(&LOCK_load_client_plugin);
for (builtin= mysql_client_builtins; *builtin; builtin++)
- add_plugin(&mysql, *builtin, 0, 0, 0);
+ add_plugin(&mysql, *builtin, 0, 0, unused);
pthread_mutex_unlock(&LOCK_load_client_plugin);
@@ -288,9 +290,13 @@
mysql_client_register_plugin(MYSQL *mysql,
struct st_mysql_client_plugin *plugin)
{
+ va_list unused;
+
if (is_not_initialized(mysql, plugin->name))
return NULL;
+ bzero(&unused, sizeof(unused)); /* suppress uninitialized-value warnings */
+
pthread_mutex_lock(&LOCK_load_client_plugin);
/* make sure the plugin wasn't loaded meanwhile */
@@ -302,7 +308,7 @@
plugin= NULL;
}
else
- plugin= add_plugin(mysql, plugin, 0, 0, 0);
+ plugin= add_plugin(mysql, plugin, 0, 0, unused);
pthread_mutex_unlock(&LOCK_load_client_plugin);
return plugin;
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