From 98054ea87ce70247bb09ceafd2ad1a0b36d2fef4 Mon Sep 17 00:00:00 2001
Patch-Source: https://github.com/dotnet/runtime/issues/82269
From: Antoine Martin <dev@ayakael.net>
Date: Sat, 1 Oct 2022 09:21:58 -0400
Subject: [PATCH] Undefine fortify-source on mono-thread-coop

When _FORTIFY_SOURCE=2, there is a bug relating to memcpy that expresses itself.
See: https://gitlab.alpinelinux.org/alpine/aports/-/issues/14105. Alpine Linux
now sets this by default since https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/43463,
which makes mono-flavored runtime dump its core. This patch offers a workaround
by undefining _FORTIFY_SOURCE in the problematic file.

---
diff --git a/src/runtime/src/mono/mono/utils/mono-threads-coop.c b/src/runtime/src/mono/mono/utils/mono-threads-coop.c
index 4ed659d6605..34bb5785fba 100644
--- a/src/runtime/src/mono/mono/utils/mono-threads-coop.c
+++ b/src/runtime/src/mono/mono/utils/mono-threads-coop.c
@@ -15,6 +15,7 @@
 #ifdef TARGET_MACH
 #define _DARWIN_C_SOURCE
 #endif
+#undef _FORTIFY_SOURCE
 
 #include <mono/utils/mono-compiler.h>
 #include <mono/utils/mono-threads.h>