On Thu, Jun 23, 2022 at 11:23 PM Dimitar Dimitrov <dimi...@dinux.eu> wrote:
>
> Some embedded targets do not pass any argv arguments. When argc is
> zero, this causes spurious failures for lto/pr101868_0.c. Fix by
> following the strategy in r0-114701-g2c49569ecea56d. Use a volatile
> variable instead of argc to inject a runtime value into the test.
>
> I validated the following:
> - No changes in testresults for x86_64-pc-linux-gnu.
> - The spurious failures are fixed for PRU target.
> - lto/pr101868_0.c still fails on x86_64-pc-linux-gnu, if
> the PR/101868 fix (r12-2254-gfedcf3c476aff7) is reverted.
>
> Ok for trunk?
OK
> PR tree-optimization/101868
>
> gcc/testsuite/ChangeLog:
>
> * gcc.dg/lto/pr101868_0.c (zero): New volatile variable.
> (main): Use it instead of argc.
>
> Signed-off-by: Dimitar Dimitrov <dimi...@dinux.eu>
> ---
> gcc/testsuite/gcc.dg/lto/pr101868_0.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/gcc/testsuite/gcc.dg/lto/pr101868_0.c
> b/gcc/testsuite/gcc.dg/lto/pr101868_0.c
> index c84d19b0267..03124308267 100644
> --- a/gcc/testsuite/gcc.dg/lto/pr101868_0.c
> +++ b/gcc/testsuite/gcc.dg/lto/pr101868_0.c
> @@ -22,12 +22,13 @@ repro(VALUE dummy, VALUE hash)
>
> static VALUE (*that)(VALUE dummy, VALUE hash) = repro;
>
> +volatile int zero = 0;
> +
> int
> main(int argc, char **argv)
> {
> - argc--;
> - that(0, argc);
> + that(0, zero);
>
> - rb_check_type(argc, argc);
> + rb_check_type(zero, zero);
>
> }
> --
> 2.36.1
>
