Spurious libstdc++ testsuite failures because of truncated buffered output

[Diego Novillo]

On Fri, Mar 18, 2011 at 14:05, Andreas Schwab <schwab@linux-m68k.org> wrote:
> Diego Novillo <dnovillo@google.com> writes:
>
>> Thanks, but I don't think match_max affects this.  It's the output
>> from the compiler that is being truncated.
>
> I don't see that problem on powerpc-linux (and I couldn't find any such
> failure on gcc-testresults).

It only happens in our builds that have very deep directory trees.
The extra long path names contribute to filling up whatever buffer
that dejagnu uses for output.  I believe that if you manage to build
inside a tree this long, you'll be able to reproduce the problem:

$ pwd -P | wc -c
236


Diego.