Setting test suite not to try debug output cases

[Richard Biener]

On Fri, Sep 2, 2022 at 8:57 PM Koning, Paul via Gcc <gcc@gcc.gnu.org> wrote:
>
> Given that pdp11 no longer supports debug output, I get a lot more test failures, like this:
>
> spawn -ignore SIGHUP /Users/pkoning/Documents/svn/build/pdp/gcc/xgcc -B/Users/pkoning/Documents/svn/build/pdp/gcc/ -mlra -fdiagnostics-plain-output -Og -g -w -c -o 20000105-1.o /Users/pkoning/Documents/svn/gcc/gcc/testsuite/gcc.c-torture/compile/20000105-1.c
> xgcc: warning: target system does not support debug output
> cc1: warning: target system does not support debug output
> FAIL: gcc.c-torture/compile/20000105-1.c   -Og -g  (test for excess errors)
>
> I assume there is some way in the test suite machinery to globally skip all "debug output" cases.  How would I do that?

Hmm.  In testsuite/lib/prune.exp there's

    # Ignore stabs obsoletion warnings
    regsub -all "(^|\n)\[^\n\]*\[Ww\]arning: STABS debugging
information is obsolete and not supported anymore\[^\n\]*" $text ""
text

maybe you can (selectively for pdp11) add similar pruning of the
'target system does not support debug output' message?
I think you should be able to use

   if { [istarget pdp11-*-*] } then {
     regsub -all " ... " ...
   }

>
>         paul
>