[cfe-dev] Unexpected warning in -std=gnu89 -pedantic mode.

[Eli Friedman]

On Wed, Aug 26, 2009 at 1:32 PM, Douglas Gregor<dgregor at apple.com> wrote:
>
> On Aug 26, 2009, at 1:28 PM, Eli Friedman wrote:
>
> On Wed, Aug 26, 2009 at 12:57 PM, Enea Zaffanella<zaffanella at cs.unipr.it>
> wrote:
> The issue here is that arguably, almost everything which we print a
> warning for with -pedantic is a GNU extension, since they're
> violations of the standard and implemented by gcc.  Also, I'm not sure
> what we would gain by classifying extension warnings into GNU
> extensions and "generic" extensions.
>
> Well, we also support some Microsoft extensions and OpenCL constructs. One
> could imagine keeping these separate, so that users could call Clang in a
> GCC-like mode, Microsoft-like mode, or whatever.
> - Doug

Okay... so then a GNU extension would be anything we don't want in
msvc-like mode?  That's a reasonable classification, I guess.  I doubt
anyone would want the set of warnings which are not GNU extensions
using that classification scheme, though.

-Eli