[PATCH] Be more carefull about DECL merging in LTO (PR lto/85248).

[Richard Biener]

On Mon, Apr 9, 2018 at 3:55 PM, Martin Liška <mliska@suse.cz> wrote:
> Hi.
>
> Following patch adds checking of noreturn attribute when we merge DECLs in LTO.
> Note that proper fix is probably https://gcc.gnu.org/bugzilla/attachment.cgi?id=43884&action=diff
> but that would be applicable after MPX is removed. Thus in next stage1.
>
> Patch can bootstrap on x86_64-linux-gnu and survives regression tests.

+         return false;
+       }
+
     }

excessive vertical space.

Otherwise OK.

Thanks,
Richard.

> Ready to be installed?
> Martin
>
> gcc/lto/ChangeLog:
>
> 2018-04-06  Richard Biener  <rguenther@suse.de>
>             Martin Liska  <mliska@suse.cz>
>
>         PR lto/85248
>         * lto-symtab.c (lto_symtab_merge_p): Handle noreturn attribute.
>
> gcc/testsuite/ChangeLog:
>
> 2018-04-06  Jakub Jelinek  <jakub@redhat.com>
>
>         PR lto/85248
>         * gcc.dg/lto/pr85248_0.c: New test.
>         * gcc.dg/lto/pr85248_1.c: New test.
> ---
>  gcc/lto/lto-symtab.c                 | 17 ++++++++++++++
>  gcc/testsuite/gcc.dg/lto/pr85248_0.c | 45 ++++++++++++++++++++++++++++++++++++
>  gcc/testsuite/gcc.dg/lto/pr85248_1.c |  9 ++++++++
>  3 files changed, 71 insertions(+)
>  create mode 100644 gcc/testsuite/gcc.dg/lto/pr85248_0.c
>  create mode 100644 gcc/testsuite/gcc.dg/lto/pr85248_1.c
>
>