New upstream version 1.10

[debian/gzip] / lib / glthread / lock.h

diff --git a/lib/glthread/lock.h b/lib/glthread/lock.h
index 34ff109680b1305838e903d163a916249fa31781..30aa730b1d249ea0d07f78a4d756e6d7202a48dc 100644 (file)
--- a/lib/glthread/lock.h
+++ b/lib/glthread/lock.h
@@ -149,8 +149,14 @@ extern int glthread_in_use (void);
 #  endif
 
 #  if !PTHREAD_IN_USE_DETECTION_HARD
-#   pragma weak pthread_cancel
-#   define pthread_in_use() (pthread_cancel != NULL)
+    /* Considering all platforms with USE_POSIX_THREADS_WEAK, only few symbols
+       can be used to determine whether libpthread is in use.  These are:
+         pthread_mutexattr_gettype
+         pthread_rwlockattr_destroy
+         pthread_rwlockattr_init
+     */
+#   pragma weak pthread_mutexattr_gettype
+#   define pthread_in_use() (pthread_mutexattr_gettype != NULL)
 #  endif
 
 # else