diff options
Diffstat (limited to 'libc/src/string/memchr.cpp')
| -rw-r--r-- | libc/src/string/memchr.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libc/src/string/memchr.cpp b/libc/src/string/memchr.cpp index ba52f14afa9d..ccdc262837cd 100644 --- a/libc/src/string/memchr.cpp +++ b/libc/src/string/memchr.cpp @@ -8,6 +8,7 @@ #include "src/string/memchr.h" #include "src/__support/macros/config.h" +#include "src/__support/macros/null_check.h" #include "src/string/string_utils.h" #include "src/__support/common.h" @@ -17,6 +18,8 @@ namespace LIBC_NAMESPACE_DECL { // TODO: Look at performance benefits of comparing words. LLVM_LIBC_FUNCTION(void *, memchr, (const void *src, int c, size_t n)) { + if (n) + LIBC_CRASH_ON_NULLPTR(src); return internal::find_first_character( reinterpret_cast<const unsigned char *>(src), static_cast<unsigned char>(c), n); |