[libc-commits] [libc] [libc] fix issues around stack protector (PR #74567)

[via libc-commits]

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@@ -193,6 +193,8 @@ __attribute__((noinline)) static void do_start() {
   LIBC_NAMESPACE::main_thread_attrib.atexit_callback_mgr =
       LIBC_NAMESPACE::internal::get_thread_atexit_callback_mgr();
 
+  LIBC_NAMESPACE::atexit(
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michaelrj-google wrote:

please add a comment here (and in the other startup code) mentioning that this `atexit` call needs to be the first one.

https://github.com/llvm/llvm-project/pull/74567