[Bug middle-end/34010] [4.8/4.9 Regression] ppc64 bad stdargs codegen for zero sized objects

["amker at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34010

amker at gcc dot gnu.org changed:

           What    |Removed                     |Added
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                 CC|                            |amker at gcc dot gnu.org

--- Comment #12 from amker at gcc dot gnu.org ---
(In reply to Segher Boessenkool from comment #11)
> Hi Aldy,
> 
> If the only thing failing is -m32 -mpowerpc64, that is likely another
> problem.  Not likely a regression either (but I don't have testresults
> around going back more than a year or so; it failed then).

Hmm, I saw same case failed at least on aarch64 bigendian, fsf-4.9 branch.

Not sure if same with this one, Here is log message:

spawn /.../obj/gcc2/gcc/xgcc -B/.../obj/gcc2/gcc/ -fno-diagnostics-show-caret
-fdiagnostics-color=never -w
-I/projects/.../src/gcc/gcc/testsuite/gcc.dg/compat -Wno-abi
-DSKIP_DECIMAL_FLOAT -c -specs=aem-validation.specs -o c_compat_x_tst.o
/.../obj/gcc2/gcc/testsuite/gcc10/gcc.dg-struct-layout-1//t028_x.c
In file included from
/.../obj/gcc2/gcc/testsuite/gcc10/gcc.dg-struct-layout-1//t028_x.c:10:0:
/.../obj/gcc2/gcc/testsuite/gcc10/gcc.dg-struct-layout-1//t028_test.h: In
function 'checkx2823':
/projects/.../src/gcc/gcc/testsuite/gcc.dg/compat/struct-layout-1_x2.h:11:22:
internal compiler error: Segmentation fault
/projects/.../src/gcc/gcc/testsuite/gcc.dg/compat/struct-layout-1.h:777:27:
note: in expansion of macro 'TX'
/.../obj/gcc2/gcc/testsuite/gcc10/gcc.dg-struct-layout-1//t028_test.h:24:1:
note: in expansion of macro 'T'
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
compiler exited with status 1
output is:
In file included from
/.../obj/gcc2/gcc/testsuite/gcc10/gcc.dg-struct-layout-1//t028_x.c:10:0:
/.../obj/gcc2/gcc/testsuite/gcc10/gcc.dg-struct-layout-1//t028_test.h: In
function 'checkx2823':
/projects/.../src/gcc/gcc/testsuite/gcc.dg/compat/struct-layout-1_x2.h:11:22:
internal compiler error: Segmentation fault
/projects/.../src/gcc/gcc/testsuite/gcc.dg/compat/struct-layout-1.h:777:27:
note: in expansion of macro 'TX'
/.../obj/gcc2/gcc/testsuite/gcc10/gcc.dg-struct-layout-1//t028_test.h:24:1:
note: in expansion of macro 'T'
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

FAIL: tmpdir-gcc.dg-struct-layout-1/t028 c_compat_x_tst.o compile,  (internal
compiler error)