Re: PATCH: PR driver/47547: WHOPR, can't use /dev/null as an output file

["H.J. Lu" <hjl dot tools at gmail dot com>]

On Mon, Jan 31, 2011 at 12:28 PM, Diego Novillo <dnovillo@google.com> wrote:
> On Mon, Jan 31, 2011 at 15:22, H.J. Lu <hjl.tools@gmail.com> wrote:
>
>> In the meantime, is that OK without a testcase?
>
> I'd rather have a testcase, since it doesn't really seem all that
> hard. ?Could you check if this does what I think it should?
>
>
> Thanks. ?Diego.
>
>
> Index: testsuite/lib/lto.exp
> ===================================================================
> --- testsuite/lib/lto.exp ? ? ? (revision 168468)
> +++ testsuite/lib/lto.exp ? ? ? (working copy)
> @@ -295,6 +295,8 @@ proc lto-get-options-main { src } {
> ? ? ? ? ? ? ? ?set compile_type "run"
> ? ? ? ? ? ?} elseif { ![string compare "link" $dgdo] } {
> ? ? ? ? ? ? ? ?set compile_type "link"
> + ? ? ? ? ? } elseif { ![string compare "compile-null" $dgdo] } {
> + ? ? ? ? ? ? ? set compile_type "compile-null"
> ? ? ? ? ? ?} else {
> ? ? ? ? ? ? ? ?warning "lto.exp does not support dg-lto-do $dgdo"
> ? ? ? ? ? ?}
> Index: testsuite/lib/gcc-dg.exp
> ===================================================================
> --- testsuite/lib/gcc-dg.exp ? ?(revision 168468)
> +++ testsuite/lib/gcc-dg.exp ? ?(working copy)
> @@ -114,6 +114,10 @@ proc gcc-dg-test-1 { target_compile prog
> ? ? ? ? ? ?set compile_type "assembly"
> ? ? ? ? ? ?set output_file "[file rootname [file tail $prog]].s"
> ? ? ? ?}
> + ? ? ? "compile-null" {
> + ? ? ? ? ? set compile_type "assembly"
> + ? ? ? ? ? set output_file "/dev/null"
> + ? ? ? }
> ? ? ? ?"assemble" {
> ? ? ? ? ? ?set compile_type "object"
> ? ? ? ? ? ?set output_file "[file rootname [file tail $prog]].o"
>

It doesn't work:

[hjl@gnu-6 gcc.dg]$ cat pr47547.c
/* { dg-do compile-null } */
/* { dg-options "-O2 -fdump-tree-optimized" } */

int
main ()
{
  return 0;
}

/* { dg-final { cleanup-tree-dump "optimized" } } */
[hjl@gnu-6 gcc.dg]$

[hjl@gnu-6 gcc]$ make check-gcc
RUNTESTFLAGS="--target_board='unix{-m32,}' dg.exp=pr47547.c"
...
Running /export/gnu/import/git/gcc/gcc/testsuite/gcc.dg/dg.exp ...
ERROR: gcc.dg/pr47547.c: 1: syntax error for " dg-do 1 compile-null "
..



-- 
H.J.