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-rw-r--r--warnings.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/warnings.h b/warnings.h
index 1157cb2e96..7ef3c0495c 100644
--- a/warnings.h
+++ b/warnings.h
@@ -18,8 +18,8 @@
#define G_WARN_ALL_MASK (G_WARN_ALL_ON|G_WARN_ALL_OFF)
#define pWARN_STD NULL
-#define pWARN_ALL (NULL+1) /* use warnings 'all' */
-#define pWARN_NONE (NULL+2) /* no warnings 'all' */
+#define pWARN_ALL (((SV*)0)+1) /* use warnings 'all' */
+#define pWARN_NONE (((SV*)0)+2) /* no warnings 'all' */
#define specialWARN(x) ((x) == pWARN_STD || (x) == pWARN_ALL || \
(x) == pWARN_NONE)