From: Thomas Weißschuh <thomas@t-8ch.de>
Date: Tue, 12 Sep 2023 21:49:21 +0000 (+0200)
Subject: buildsys: warn on usage of VLAs
X-Git-Tag: v2.40-rc1~246^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a52f9bdd17777c9d1426221fb90803cbc0569d53;p=thirdparty%2Futil-linux.git

buildsys: warn on usage of VLAs

Variable-length-arrays are susceptible to security issues, ensure none
are introduced.

Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
---

diff --git a/configure.ac b/configure.ac
index 5f609dec74..4e8a407b8e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -156,6 +156,7 @@ UL_WARN_ADD([-Wunused-but-set-variable])
 UL_WARN_ADD([-Wunused-parameter])
 UL_WARN_ADD([-Wunused-result])
 UL_WARN_ADD([-Wunused-variable])
+UL_WARN_ADD([-Wvla])
 
 AC_ARG_ENABLE([werror],
   AS_HELP_STRING([--enable-werror], [make all compiler warnings into errors]),
diff --git a/meson.build b/meson.build
index 8e3d6bb1d9..c00844a3bd 100644
--- a/meson.build
+++ b/meson.build
@@ -876,6 +876,7 @@ compiler_flags = [
   '-Wunused-parameter',
   '-Wunused-result',
   '-Wunused-variable',
+  '-Wvla',
 ]
 foreach compiler_flag : compiler_flags
   if cc.has_argument(compiler_flag)