[Bug c/92249] ICE in c_parser_gimple_compound_statement w/ GIMPLE testcases

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92249

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-invalid-code
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2019-10-28
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Arseny Solokha from comment #0)
> gcc-10.0.0-alpha20191027 snapshot (r277495) and 9.2 ICE when compiling the
> following testcase reduced from testsuite/gcc.dg/vect/slp-reduc-10[abcde].c
> (added in r277406) w/ -fgimple:
> 
> void __GIMPLE (ssa)
> foo (void)
> {
>   return;
> }

That's invalid GIMPLE source for SSA GIMPLE.  I expect there are very many
ice-on-invalid here.  I'll fix this one though.

> gcc fails on the original testcases w/ -fno-gimple:
> 
> % gcc-10.0.0-alpha20191027 -fno-gimple -c
> gcc/testsuite/gcc.dg/vect/slp-reduc-10a.c
> gcc/testsuite/gcc.dg/vect/slp-reduc-10a.c:5:5: error: '__GIMPLE' only valid
> with '-fgimple'
>     5 | int __GIMPLE (ssa,guessed_local(118111600),startwith("dce3"))
>       |     ^~~~~~~~

That's expected.