Re: bug#72842: Compile error due to lto warning on Arch Linux -Werror=maybe-uninitialized

[Pádraig Brady]

On 27/08/2024 22:34, Paul Eggert wrote:
> I'm not seeing that false alarm when building coreutils v9.5 on Ubuntu
> 24.04 LTS with "./configure --enable-gcc-warnings CC=gcc-14".
>
> What GCC version are you using? If it's not GCC 14, try upgrading. I'm
> using gcc-14 (Ubuntu 14-20240412-0ubuntu1) 14.0.1 20240412
> (experimental) [master r14-9935-g67e1433a94f].

I think LTO is key here, as GCC has more context then to produce warnings.
With `-march=native -O3 -flto` on GCC 14.2.1 I see,
2 false warnings in gnulib (patch attached).
1 correct warning in coreutils (patch attached).

Marking this as done.
I'll apply the patches later today.

cheers,
Pádraig.

gnulib-lto.patch
Description: Text Data

coreutils-xdectoint-lto.patch
Description: Text Data