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-rw-r--r--OpenAL32/Include/alMain.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 4094d894..366d6577 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -38,7 +38,7 @@ typedef DWORD tls_type;
#include <time.h>
#include <errno.h>
-#define IsBadWritePtr(a,b) (0)
+#define IsBadWritePtr(a,b) ((a) == NULL && (b) != 0)
typedef pthread_key_t tls_type;
#define tls_create(x) pthread_key_create((x), NULL)