Bug #27964: pthread_key_create doesn't set errno, so don't report \

	errno

Vasil Dimov (at Oracle) noted that pthread_key_create() does not
set errno, so if it fails then we return the wrong error code.

Instead, capture the return value, which is the real error value, 
and instead report that.

1 files changed, 3 insertions, 2 deletions

diff --git a/mysys/my_thr_init.c b/mysys/my_thr_init.c
index 7a5fdbf8ad6..da465385b3e 100644
--- a/mysys/my_thr_init.c
+++ b/mysys/my_thr_init.c
@@ -79,11 +79,12 @@ static uint get_thread_lib(void);
 
 my_bool my_thread_global_init(void)
 {
+  int pth_ret;
   thd_lib_detected= get_thread_lib();
 
-  if (pthread_key_create(&THR_KEY_mysys,0))
+  if (pth_ret= pthread_key_create(&THR_KEY_mysys, NULL))
   {
-    fprintf(stderr,"Can't initialize threads: error %d\n",errno);
+    fprintf(stderr,"Can't initialize threads: pthread error %d\n", pth_ret);
     return 1;
   }