From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Mon, 11 Jun 2018 11:17:43 +0000 (+0200)
Subject: meson: also reject shifts that change the sign bit
X-Git-Tag: v239~97
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d28b67d46a1f39569231d070f41365b71cc55e8f;p=platform%2Fupstream%2Fsystemd.git

meson: also reject shifts that change the sign bit

../src/test/test-sizeof.c: In function ‘main’:
../src/test/test-sizeof.c:70:24: error: result of ‘1 << 31’ requires 33 bits to represent, but ‘int’ only has 32 bits [-Werror=shift-overflow=]
                 X = (1 << 31),
                        ^~
cc1: some warnings being treated as errors

Follow-up for b05ecb8cadd8c32d31b1aabcff4e507bd89b5465.
---

diff --git a/meson.build b/meson.build
index 29ee446..3644e8d 100644
--- a/meson.build
+++ b/meson.build
@@ -320,6 +320,7 @@ possible_cc_flags = [
         '-Wwrite-strings',
         '-Werror=overflow',
         '-Werror=shift-count-overflow',
+        '-Werror=shift-overflow=2',
         '-Wdate-time',
         '-Wnested-externs',
         '-ffast-math',