On Wed, Jul 29, 2026 at 8:54 PM Alexandre Oliva <[email protected]> wrote:
>
>
> Some embedded targets set argc to zero when calling main, but then
> pr126194 testcase fails because it uses argc > 0 to enable the code
> that allows the test to pass. Derive the argc passed to the primary
> LTOed entry point from argc >= 0, so that it isn't a link-time
> constant, but the guarding condition always passes at runtime.
>
> Regstrapped on x86_64-linux-gnu. Also tested with gcc-15 on embedded
> targets whose C runtimes call main(0,0). Ok to install?
Ok.
>
>
> for gcc/testsuite/ChangeLog
>
> PR tree-optimization/126194
> * g++.dg/lto/pr126194_2.C (main): Tolerate argc == 0.
> ---
> gcc/testsuite/g++.dg/lto/pr126194_2.C | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/gcc/testsuite/g++.dg/lto/pr126194_2.C
> b/gcc/testsuite/g++.dg/lto/pr126194_2.C
> index 3c024f47a196b..9725a4239cdf0 100644
> --- a/gcc/testsuite/g++.dg/lto/pr126194_2.C
> +++ b/gcc/testsuite/g++.dg/lto/pr126194_2.C
> @@ -4,5 +4,5 @@ extern "C" int run_repro(int argc);
>
> int main(int argc, char**)
> {
> - return run_repro(argc);
> + return run_repro(argc >= 0);
> }
>
> --
> Alexandre Oliva, happy hacker https://blog.lx.oliva.nom.br/
> Free Software Activist FSFLA co-founder GNU Toolchain Engineer
> More tolerance and less prejudice are key for inclusion and diversity.
> Excluding neuro-others for not behaving ""normal"" is *not* inclusive!
