Fixed TclpFreeAllocCache() to recognize when being called with NULL

argument.  This is a signal for it to clean up the tsd key associated
with the threading allocator.

1 files changed, 10 insertions, 7 deletions

diff --git a/unix/tclUnixThrd.c b/unix/tclUnixThrd.c
index f163782..19e73c5 100644
--- a/unix/tclUnixThrd.c
+++ b/unix/tclUnixThrd.c
@@ -933,13 +933,16 @@ TclpFreeAllocMutex(mutex)
 void TclpFreeAllocCache(ptr)
     void *ptr;
 {
-    extern void TclFreeAllocCache(void *);
-
-    TclFreeAllocCache(ptr);
-    /*
-     * Perform proper cleanup of things done in TclpGetAllocCache.
-     */
-    if (initialized) {
+    if (ptr != NULL) {
+        /*
+         * Called by the pthread lib when a thread exits
+         */
+        TclFreeAllocCache(ptr);
+    } else if (initialized) {
+        /*
+         * Called by us in TclFinalizeThreadAlloc() during
+         * the library finalization initiated from Tcl_Finalize()
+         */
         pthread_key_delete(key);
         initialized = 0;
     }