[Mesa-dev] [PATCH] clover: Prevent Clang from printing number of errors and warnings to stderr.

[Tom Stellard]

On Tue, May 13, 2014 at 11:35:36AM +0200, Francisco Jerez wrote:
> Tom Stellard <tom at stellard.net> writes:
> 
> > On Tue, May 13, 2014 at 01:23:03AM +0200, Francisco Jerez wrote:
> >> Tom Stellard <thomas.stellard at amd.com> writes:
> >> 
> >> > https://bugs.freedesktop.org/show_bug.cgi?id=78581
> >> >
> >> > CC: "10.1 10.2" <mesa-stable at lists.freedesktop.org>
> >> > ---
> >> >  src/gallium/state_trackers/clover/llvm/invocation.cpp | 4 ++++
> >> >  1 file changed, 4 insertions(+)
> >> >
> >> > diff --git a/src/gallium/state_trackers/clover/llvm/invocation.cpp b/src/gallium/state_trackers/clover/llvm/invocation.cpp
> >> > index 82e262f..c211a06 100644
> >> > --- a/src/gallium/state_trackers/clover/llvm/invocation.cpp
> >> > +++ b/src/gallium/state_trackers/clover/llvm/invocation.cpp
> >> > @@ -187,6 +187,10 @@ namespace {
> >> >        c.getLangOpts().NoBuiltin = true;
> >> >        c.getTargetOpts().Triple = triple;
> >> >        c.getTargetOpts().CPU = processor;
> >> > +
> >> > +      // This prevents Clang from printing the number of warnings and errors
> >> > +      // to stderr.
> >> > +      c.getDiagnosticOpts().ShowCarets = false;
> >> 
> >> Hm...  Why does 'ShowCarets = true' lead Clang to print errors to
> >> stderr?
> >> 
> >
> > I'm not really sure.  Here is the relevant code in Clang:
> >
> > https://github.com/llvm-mirror/clang/blob/master/lib/Frontend/CompilerInstance.cpp#L728
> >
> 
> It doesn't look like this is the intended behaviour?  Clang bug
> probably?
> 

There is a FIXME comment higher up in the function that says stderr
should be replaced with an OutputStream parameter once the all the
APIs take OutputStream as a parameter.  I can file a bug for this,
but I think for now, we'll have to work around it in clover.

-Tom

> > -Tom
> >
> >> >  #if HAVE_LLVM <= 0x0301
> >> >        c.getInvocation().setLangDefaults(clang::IK_OpenCL);
> >> >  #else
> >> > -- 
> >> > 1.8.1.5
> >
> >
> >
> >
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