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-rw-r--r--src/include/c.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/c.h b/src/include/c.h
index 7396adbaa77..82acd14a9b4 100644
--- a/src/include/c.h
+++ b/src/include/c.h
@@ -478,7 +478,7 @@ typedef NameData *Name;
* PointerIsValid
* True iff pointer is valid.
*/
-#define PointerIsValid(pointer) ((void*)(pointer) != NULL)
+#define PointerIsValid(pointer) ((const void*)(pointer) != NULL)
/*
* PointerIsAligned