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Re: 4.6.1-RC1: Using LTO in canadian cross


Ian Lance Taylor wrote:
> Georg-Johann Lay writes:
>> Yet another question: The above run generated temporary file names like
>> c:\Temp\cc0oaaaa.res which is a bit annoying when comparing testsuite
>> .log files.  Is there a way so that different runs generate same file
>> name(s)?
> 
> The simplest way is to use the --save-temps option.
> 
> Ian

That does not work because then all LTO test cases fail.

lto-wrapper.c has:

...
int debug;				/* true if -save-temps.  */
...

static void
maybe_unlink_file (const char *file)
{
  if (! debug)
    {
      if (unlink_if_ordinary (file)
	  && errno != ENOENT)
	fatal_perror ("deleting LTRANS file %s", file);
    }
  else
    fprintf (stderr, "[Leaving LTRANS %s]\n", file);
}

and the additional "[Leave LTRANS..." output makes all LTO tests fail.

Even with -save-temps there are non-reproduceable file names (here
from mingw):

[Leaving LTRANS C:\Temp\ccw1rUwh.args]
[Leaving LTRANS ab.elf.ltrans.out]
[Leaving LTRANS C:\Temp\ccJbGYVI.args]
[Leaving LTRANS ab.elf.ltrans0.o]

Johann



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