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-rw-r--r--ext/zlib/zlib.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index 00e584134c..03d4255020 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -14,10 +14,10 @@
#ifdef HAVE_VALGRIND_MEMCHECK_H
# include <valgrind/memcheck.h>
# ifndef VALGRIND_MAKE_MEM_DEFINED
-# define VALGRIND_MAKE_MEM_DEFINED(p, n) VALGRIND_MAKE_READABLE(p, n)
+# define VALGRIND_MAKE_MEM_DEFINED(p, n) VALGRIND_MAKE_READABLE((p), (n))
# endif
# ifndef VALGRIND_MAKE_MEM_UNDEFINED
-# define VALGRIND_MAKE_MEM_UNDEFINED(p, n) VALGRIND_MAKE_WRITABLE(p, n)
+# define VALGRIND_MAKE_MEM_UNDEFINED(p, n) VALGRIND_MAKE_WRITABLE((p), (n))
# endif
#else
# define VALGRIND_MAKE_MEM_DEFINED(p, n) /* empty */