Fixed a possible memory leak on MacOSX when using the shared libmysql.so library (Bug #2061)

mysql_server_init() now returns error code if something went wrong (Bug #2062)
Don't use my_fopen() when reading symlink information as this may cause problems when a lot of files are opened.
Free thread keys with pthread_key_delete() instead of relying on automatic free. (Bug #2062)
Fixed bug in UNION statement with alias '*'. (Bug #1249)
Fixed a bug in DELETE ... ORDER BY ... LIMIT where the rows where not deleted in the proper order. (Bug #1024).
FOUND_ROWS() could return incorrect number of rows after a query with an impossible WHERE condition.
HOW DATABASES doesn't anymore show .sym files (on windows) that doesn't point to a valid directory. (Bug #1385)

1 files changed, 16 insertions, 6 deletions

diff --git a/libmysql/libmysql.c b/libmysql/libmysql.c
index 5fcc3ba5ee0..607d8af6e50 100644
--- a/libmysql/libmysql.c
+++ b/libmysql/libmysql.c
@@ -102,8 +102,7 @@ int STDCALL mysql_server_init(int argc __attribute__((unused)),
 			      char **argv __attribute__((unused)),
 			      char **groups __attribute__((unused)))
 {
-  mysql_once_init();
-  return 0;
+  return (int) mysql_once_init();
 }
 
 void STDCALL mysql_server_end()
@@ -1436,7 +1435,8 @@ STDCALL mysql_rpl_query_type(const char* q, int len)
 MYSQL * STDCALL
 mysql_init(MYSQL *mysql)
 {
-  mysql_once_init();
+  if (mysql_once_init())
+    return 0;
   if (!mysql)
   {
     if (!(mysql=(MYSQL*) my_malloc(sizeof(*mysql),MYF(MY_WME | MY_ZEROFILL))))
@@ -1476,15 +1476,20 @@ mysql_init(MYSQL *mysql)
     This function is called by mysql_init() and indirectly called
     by mysql_query(), so one should never have to call this from an
     outside program.
+
+  RETURN
+    0  ok
+    1  could not initialize environment (out of memory or thread keys)
 */
 
-void mysql_once_init(void)
+int mysql_once_init(void)
 {
   if (!mysql_client_init)
   {
     mysql_client_init=1;
     org_my_init_done=my_init_done;
-    my_init();					/* Will init threads */
+    if (my_init())				/* Will init threads */
+      return 1;
     init_client_errs();
     if (!mysql_port)
     {
@@ -1518,10 +1523,15 @@ void mysql_once_init(void)
   }
 #ifdef THREAD
   else
-    my_thread_init();         /* Init if new thread */
+  {
+    if (my_thread_init())         /* Init if new thread */
+      return 1;
+  }
 #endif
+  return 0;
 }
 
+
 /**************************************************************************
   Fill in SSL part of MYSQL structure and set 'use_ssl' flag.
   NB! Errors are not reported until you do mysql_real_connect.