1 files changed, 4 insertions, 0 deletions
diff --git a/libc/src/string/memset.cpp b/libc/src/string/memset.cpp
index c2868afa9103..a0b96b3cf88b 100644
--- a/libc/src/string/memset.cpp
+++ b/libc/src/string/memset.cpp
@@ -9,11 +9,15 @@
 #include "src/string/memset.h"
 #include "src/__support/common.h"
 #include "src/__support/macros/config.h"
+#include "src/__support/macros/null_check.h"
 #include "src/string/memory_utils/inline_memset.h"
 
 namespace LIBC_NAMESPACE_DECL {
 
 LLVM_LIBC_FUNCTION(void *, memset, (void *dst, int value, size_t count)) {
+  if (count)
+    LIBC_CRASH_ON_NULLPTR(dst);
+
   inline_memset(dst, static_cast<uint8_t>(value), count);
   return dst;
 }