From: Timm Bäder <mail@baedert.org>
Date: Thu, 27 Jan 2022 15:05:33 +0000 (+0100)
Subject: build: Make GCC ignore fallthrough comments
X-Git-Tag: archive/raspbian/4.6.5+ds-1+rpi1~1^2~19^2~4^2~44^2~1
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=7194196100bf7c08ba2d1d1664738efd6cd3fa78;p=gtk4.git

build: Make GCC ignore fallthrough comments

From the GCC manpage:

> Wimplicit-fallthrough=5 doesn't recognize any comments as
> fallthrough comments, only attributes disable
> the warning.

So, check for the =5 version after checking for the simple version. This
way we get -Wfallhrough with clang and -Wfallthrough -Wfallthrough=5
with GCC, which works.
---

diff --git a/meson.build b/meson.build
index 65bf0b20af..4fbbb2f539 100644
--- a/meson.build
+++ b/meson.build
@@ -298,7 +298,8 @@ elif cc.get_id() == 'gcc' or cc.get_id() == 'clang'
     'array-bounds',
     'empty-body',
     'implicit',
-    'implicit-fallthrough',
+    'implicit-fallthrough',   # For non-gcc
+    'implicit-fallthrough=5', # For GCC, only recognize the attribute and no comments
     'init-self',
     'int-to-pointer-cast',
     'main',