LibC: Use a sensible MB_CUR_MAX value

We always use UTF-8, meaning that a single `wchar_t` might be converted into up to 4 `char`s. This would cause a buffer overflow if something actually relied on this being the right value.
Author: https://github.com/BertalanD Commit: https://github.com/SerenityOS/serenity/commit/b3ac24a9393 Pull-request: https://github.com/SerenityOS/serenity/pull/10581 Reviewed-by: https://github.com/timschumi ✅
2021-10-22 20:39:51 +02:00 · 2021-10-22 20:39:51 +02:00 · b3ac24a939 · 2024-07-18 01:57:15 +09:00
commit b3ac24a939
parent ba975f4ba4
1 changed files with 1 additions and 1 deletions
--- a/Userland/Libraries/LibC/stdlib.h
+++ b/Userland/Libraries/LibC/stdlib.h
@ -16,7 +16,7 @@ __BEGIN_DECLS

 #define EXIT_SUCCESS 0
 #define EXIT_FAILURE 1
-#define MB_CUR_MAX 1
+#define MB_CUR_MAX 4

 __attribute__((malloc)) __attribute__((alloc_size(1))) void* malloc(size_t);
 __attribute__((malloc)) __attribute__((alloc_size(1, 2))) void* calloc(size_t nmemb, size_t);