From ab9cc62858fe9225e9323608f6c2ebc593a99c09 Mon Sep 17 00:00:00 2001
From: Mike Hommey <mh+mozilla@glandium.org>
Date: Thu, 6 Jul 2023 09:34:02 +0000
Subject: [PATCH] Bug 1841935 - Disable -fsanitize=function for C files.
 r=decoder

Clang has recently added support for function UB sanitizing for C, but
it catches cases in e.g. NSS and SQLite that are IMHO a gray area rather
than a clear case of UB (https://reviews.llvm.org/D148827#4422709).

Differential Revision: https://phabricator.services.mozilla.com/D182859
---
 build/sanitizers/ubsan_function_blacklist.txt | 4 ++++
 1 file changed, 4 insertions(+)
 create mode 100644 build/sanitizers/ubsan_function_blacklist.txt

diff --git a/build/sanitizers/ubsan_function_blacklist.txt b/build/sanitizers/ubsan_function_blacklist.txt
new file mode 100644
index 000000000000..42dadcd179e5
--- /dev/null
+++ b/build/sanitizers/ubsan_function_blacklist.txt
@@ -0,0 +1,4 @@
+[function]
+# Disable function sanitizer for all C files (new feature in clang 17) until we
+# we can narrow this down. See bug 1841935.
+src:*.c