Re: [PATCH] [v2] landlock: work around gcc-16 -Wuninitialized warning

[Sebastian Andrzej Siewior]

On 2026-09-16 23:06:30 [+0200], Arnd Bergmann wrote:
> As far as I can tell, 16.2 is still affected, even though it should be
> fixed in HEAD. gcc-16.3 won't be released until spring 2027 though.
> 
> It is possible that there are additional configuration options that
> have to be set just right to reproduce the issue. I've attached a
> configuration that triggered it for me this week.

This is from v7.2. I tried this and v7.3-rc3 and did not notice a
warning (other than unrelated stack size from drm). I did notice:

-CONFIG_CC_VERSION_TEXT="x86_64-linux-gcc (GCC) 16.2.0"
+CONFIG_CC_VERSION_TEXT="gcc (Debian 16.2.0-2) 16.2.0"
 CONFIG_GCC_VERSION=160200
-CONFIG_AS_VERSION=20285426
+CONFIG_AS_VERSION=24700
-CONFIG_LD_VERSION=20285426
+CONFIG_LD_VERSION=24700
+CONFIG_CC_HAS_MARCH_NATIVE=y

which might be the culprit. There were other things, too, so the
oldconfig was not clean (such as missing CONFIG_VIRTUALIZATION).

>       Arnd

Sebastian