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Re: [PATCH] Modify gcc.dg/lto/20091216-1_0.c
- From: Richard Guenther <richard dot guenther at gmail dot com>
- To: Steven Bosscher <stevenb dot gcc at gmail dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, dave dot korn dot cygwin at googlemail dot com, Jack Howarth <howarth at nitro dot msbb dot uc dot edu>
- Date: Thu, 29 Apr 2010 18:07:32 +0200
- Subject: Re: [PATCH] Modify gcc.dg/lto/20091216-1_0.c
- References: <r2u571f6b511004290858pe4cafb0bhf8195efc4e9ac43f@mail.gmail.com>
On Thu, Apr 29, 2010 at 5:58 PM, Steven Bosscher <stevenb.gcc@gmail.com> wrote:
> Hi,
>
> This test case gcc.dg/lto/20091216-1_0.c fails on darwin with LTO because:
>
> Executing on host: /Users/stevenb/lto_objdir/gcc/xgcc
> -B/Users/stevenb/lto_objdir/gcc/ c_lto_20091216-1_0.o ?-O0 -fwhopr
> ?-o gcc-dg-lto-ld: duplicate symbol start in c_lto_20091216-1_0.o and
> /usr/lib/crt1.10.5.o^M
> collect2: ld returned 1 exit status^M
> compiler exited with status 1
>
> Mind if I rename start to start_ to avoid this issue?
>
> With that, I still have the following FAILs with LTO on Mach-O:
>
> * gcc.dg/lto/20100423-2_1.c failing because _stderr is undefined:
> Undefined symbols:^M
> ?"_stderr", referenced from:
> ? ? ?_read_error in c_lto_20100423-2_0.o
> ld: symbol(s) not found^M
>
> * gcc.dg/lto/c_lto_20081201-2 because WHOPR miscompiles this
> apparently (there is no output explaining the FAIL)
>
> * gcc.dg/lto/20081222_1.c:14:21: error: only weak aliases are
> supported in this configuration
>
> * gcc.dg/lto/20090914-1 because for some reason GCC emits an
> unrecognized assembler directive:
> /var/tmp//ccVZkECh.s:44:Unknown pseudo-op: .type
> /var/tmp//ccVZkECh.s:44:Rest of line ignored. 1st junk character valued 109 (m).
> compiler exited with status 1
>
> Not bad for a half-finished patch. IIRC Dave ran into some of the
> above FAILs on Cygwin also. How should those test cases be fixed (or
> disabled)?
Ok.
Thanks,
Richard.
> Ciao!
> Steven
>
> ? ? ? ?* gcc.dg/lto/20091216-1_0.c
>
> Index: gcc.dg/lto/20091216-1_0.c
> ===================================================================
> --- gcc.dg/lto/20091216-1_0.c ? (revision 158800)
> +++ gcc.dg/lto/20091216-1_0.c ? (working copy)
> @@ -1,6 +1,6 @@
> ?/* { dg-lto-do run } */
>
> -asm (".globl start; start: nop");
> +asm (".globl start_; start_: nop");
>
> ?int
> ?main ()
>