[8.3 backport][gdb/testsuite] Fix regexp in skip_opencl_tests

[Joel Brobecker]

> > When running gdb-caching-proc.exp, if skip_opencl_tests fails like this:
> > ...
> > (gdb) run
> > Starting program: \
> >   build/gdb/testsuite/outputs/gdb.base/gdb-caching-proc/opencltest13530.x
> > CHK_ERR (clGetPlatformIDs (1, &platform, NULL), -1001)
> > src/gdb/testsuite/lib/opencl_hostapp.c:73 error: Unknown
> > [Inferior 1 (process 13600) exited with code 01]
> > (gdb)
> > skip_opencl_tests: OpenCL support not detected
> > ...
> > then this regexp in skip_opencl_tests fails to match:
> > ...
> >         -re ".*$inferior_exited_re code.*${gdb_prompt} $" {
> > ...
> > so instead we hit the default clause after a 30 seconds timeout.  With the
> > iteration count set at 10, we end up taking 6 minutes to run this test-case.
> > 
> > Fix this by adding the missing "with" in the regexp, bring back the runtime to
> > half a minute.
> > 
> > Tested on x86_64-linux.
> > 
> > Committed to trunk.
> > 
> 
> Hi,
> 
> ok to backport to 8.3 branch?
> 
> This applies cleanly, and reduces testing time with ~5 minutes (with a
> total testing time of ~30 minutes) on my laptop.

Looks OK for 8.3.1 indeed, but you'll need to create a GDB PR on
bugzilla for it (assuming not already existing), and then reference
that PR in the ChangeLog entry (and the corresponding revision log
in the commit log).

Thank you!

> 
> Thanks,
> - Tom
> 
> > 
> > [gdb/testsuite] Fix regexp in skip_opencl_tests
> > 
> > gdb/testsuite/ChangeLog:
> > 
> > 2019-04-29  Tom de Vries  <tdevries@suse.de>
> > 
> > 	* lib/opencl.exp (skip_opencl_tests): Add missing "with" in regexp.
> > 
> > ---
> >  gdb/testsuite/lib/opencl.exp | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/gdb/testsuite/lib/opencl.exp b/gdb/testsuite/lib/opencl.exp
> > index 4d353de246..33eb437bc8 100644
> > --- a/gdb/testsuite/lib/opencl.exp
> > +++ b/gdb/testsuite/lib/opencl.exp
> > @@ -58,7 +58,7 @@ gdb_caching_proc skip_opencl_tests {
> >              verbose -log "\n$me: OpenCL support detected"
> >              set result 0
> >          }
> > -        -re ".*$inferior_exited_re code.*${gdb_prompt} $" {
> > +        -re ".*$inferior_exited_re with code.*${gdb_prompt} $" {
> >              verbose -log "\n$me: OpenCL support not detected"
> >              set result 1
> >          }
> > 

-- 
Joel