LibC: Use 64-bit stack smash value for 64-bit mode

Otherwise it'll use the first 32 bits that happen to come after, leading to very weird bugs. Fixes #8601
Author: https://github.com/dascandy Commit: a5a62f99c5 Pull-request: https://github.com/SerenityOS/serenity/pull/8821 Issue: https://github.com/SerenityOS/serenity/issues/8601 Reviewed-by: https://github.com/gunnarbeutner ✅
2025-09-05 00:56:39 +00:00 · 2021-07-16 23:30:01 +02:00 · 2021-07-16 23:30:01 +02:00 · a5a62f99c5 · 2024-07-18 08:53:50 +09:00
commit a5a62f99c5
parent 205c8a12ed
3 changed files with 7 additions and 7 deletions
--- a/Userland/Libraries/LibC/ssp.cpp
+++ b/Userland/Libraries/LibC/ssp.cpp
@ -17,8 +17,8 @@

 extern "C" {

-extern u32 __stack_chk_guard;
-u32 __stack_chk_guard = (u32)0xc6c7c8c9;
+extern size_t __stack_chk_guard;
+size_t __stack_chk_guard = (size_t)0xc6c7c8c9;

 __attribute__((noreturn)) void __stack_chk_fail()
 {