1 files changed, 1 insertions, 0 deletions

diff --git a/include/string.h b/include/string.h
index 2c11e5e..342bde0 100644
--- a/include/string.h
+++ b/include/string.h
@@ -75,6 +75,7 @@ _FORTIFY_FN(memmove) void *memmove(void * _FORTIFY_POS0 __d,
 
 __access(write_only, 1, 3)
 __diagnose_as_builtin(__builtin_memset, 1, 2, 3)
+__warning_if(__c != 0 && __n == 0, "'memset' will set `0` bytes; did you invert the arguments?")
 _FORTIFY_FN(memset) void *memset(void * _FORTIFY_POS0 __d, int __c, size_t __n)
 {
         size_t __b = __bos(__d, 0);