From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Wed, 12 Nov 2025 05:17:00 +0000
Subject: Bug 1768116 - Compile as C++20. r=glandium,webrtc-reviewers,mjf

Co-authored-by: Chris Peterson <cpeterson@mozilla.com>

Differential Revision: https://phabricator.services.mozilla.com/D271779
Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/a076ddec60822b1d20f39dd468e025f712b3ba4d
---
 BUILD.gn | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/BUILD.gn b/BUILD.gn
index c24f5c186e..487897df7a 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -316,16 +316,6 @@ config("common_config") {
   cflags_objc = []
   defines = []
 
-  # We should be able to remove this after c++20 is enabled
-  # across the Mozilla tree.
-  if (build_with_mozilla) {
-    if (is_win) {
-      cflags_cc += [ "-std:c++20" ]
-    } else {
-      cflags_cc += [ "-std=gnu++20" ]
-    }
-  }
-
   if (rtc_enable_protobuf) {
     defines += [ "WEBRTC_ENABLE_PROTOBUF=1" ]
   } else {
@@ -431,7 +421,7 @@ config("common_config") {
         # "-Wnested-externs",  (C/Obj-C only)
       ]
       cflags_objc += [ "-Wstrict-prototypes" ]
-      cflags_cc += [
+      cflags_cc = [
         "-Wnon-virtual-dtor",
 
         # This is enabled for clang; enable for gcc as well.