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-rw-r--r--test/fuzz/minigzip_fuzzer.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/fuzz/minigzip_fuzzer.c b/test/fuzz/minigzip_fuzzer.c
index 92ccedc9dc..1f19126f44 100644
--- a/test/fuzz/minigzip_fuzzer.c
+++ b/test/fuzz/minigzip_fuzzer.c
@@ -13,6 +13,7 @@
*/
#define _POSIX_SOURCE 1 /* This file needs POSIX for fileno(). */
+#define _POSIX_C_SOURCE 200112 /* For snprintf(). */
#include "zbuild.h"
#ifdef ZLIB_COMPAT