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-rw-r--r--gcc/ada/tracebak.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/ada/tracebak.c b/gcc/ada/tracebak.c
index 63f93b3..2b134ae 100644
--- a/gcc/ada/tracebak.c
+++ b/gcc/ada/tracebak.c
@@ -298,7 +298,7 @@ struct layout
#include <windows.h>
#define IS_BAD_PTR(ptr) (IsBadCodePtr((void *)ptr))
#elif defined (sun)
-#define IS_BAD_PTR(ptr) ((unsigned long)ptr == -1)
+#define IS_BAD_PTR(ptr) ((unsigned long)ptr == -1UL)
#else
#define IS_BAD_PTR(ptr) 0
#endif