[cfe-dev] return statements without expressions in non-void functions revisited

[Jack Howarth]

On Mon, Jul 25, 2011 at 12:50:01PM -0700, Douglas Gregor wrote:
> 
> On Jul 15, 2011, at 5:56 PM, Jack Howarth wrote:
> 
> >   In porting texlive under clang for fink, we have run into the same issue from this thread...
> > 
> > http://comments.gmane.org/gmane.comp.compilers.clang.devel/10688
> > 
> > In that thread it was suggested that -std=c89 might be modified to convert the error into
> > a warning for...
> > 
> > [MacPro:~] howarth% clang -std=gnu89 -c type1_test.c -fno-strict-aliasing 
> > type1_test.c:24:8: error: non-void function 'PSFakePop' should return a value [-Wreturn-type]
> >  else Error0("PSFakePop: Stack empty\n");
> >       ^
> > type1_test.c:13:54: note: instantiated from:
> > #define Error0(errmsg) { CC; IfTrace0(TRUE, errmsg); Error;}
> >                                                     ^
> > type1_test.c:11:32: note: instantiated from:
> > #define Error {errflag = TRUE; return;}
> >                               ^
> > 1 error generated.
> > 
> > This appears to never have been implemented however. Any suggestions on the best approach to
> > revise the following testcase to avoid the error under clang (which I also see under icc
> > but not gcc trunk even with -std=c90)?
> 
> The flag -Wno-error=return-type will downgrade this error to a warning. -Wno-return-type will turn off the warning/error entirely.
> 
> 	- Doug

Doug,
   Is there any documentation of the full set of warnings which are treated
as errors that can be suppressed with -Wno-error in this manner?
                      Jack