From efd5bc0715e5477318be95a76811cda0a89e8289 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Fri, 4 Mar 2022 12:00:26 +0100
Subject: [PATCH] GLIBCXX fix for GCC 12?

---
 build/unix/stdc++compat/stdc++compat.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/build/unix/stdc++compat/stdc++compat.cpp b/build/unix/stdc++compat/stdc++compat.cpp
index 0180f6bcfa998..8d7a542ff11f0 100644
--- a/build/unix/stdc++compat/stdc++compat.cpp
+++ b/build/unix/stdc++compat/stdc++compat.cpp
@@ -24,6 +24,7 @@
    GLIBCXX_3.4.27 is from gcc 10
    GLIBCXX_3.4.28 is from gcc 10
    GLIBCXX_3.4.29 is from gcc 11
+   GLIBCXX_3.4.30 is from gcc 12
 
 This file adds the necessary compatibility tricks to avoid symbols with
 version GLIBCXX_3.4.20 and bigger, keeping binary compatibility with
@@ -69,6 +70,19 @@ void __attribute__((weak)) __throw_bad_array_new_length() { MOZ_CRASH(); }
 }  // namespace std
 #endif
 
+#if _GLIBCXX_RELEASE >= 12
+namespace std {
+
+/* This avoids the GLIBCXX_3.4.30 symbol version. */
+void __attribute__((weak))
+__glibcxx_assert_fail(const char* __file, int __line, const char* __function,
+                      const char* __condition) {
+  MOZ_CRASH();
+}
+
+}  // namespace std
+#endif
+
 /* While we generally don't build with exceptions, we have some host tools
  * that do use them. libstdc++ from GCC 5.0 added exception constructors with
  * char const* argument. Older versions only have a constructor with
-- 
2.35.1