On Wed, May 24, 2017 at 2:04 AM, Matthias Kaehlcke <mka@xxxxxxxxxxxx> wrote: > El Wed, May 17, 2017 at 11:45:29AM -0700 Matthias Kaehlcke ha dit: >> El Wed, May 17, 2017 at 09:35:57AM +0200 Arnd Bergmann ha dit: >> > On Tue, May 16, 2017 at 11:41 PM, Doug Anderson <dianders@xxxxxxxxxxxx> wrote: > It seems the duplicate-decl-specifier warning targets specifically C89: > > "The same type qualifier shall not appear more than once in the same > specifier list or qualifier list, either directly or via one or more > typedefs." > > C89 (6.5.3) > > gcc also raises a warning when '-pedantic' is specified and > -std=gnu89/c89 (or unspecified), but not with -std=gnu99/c99. > > This bug might help to shed more light on this: > https://bugs.llvm.org/show_bug.cgi?id=32985 I also notice that neither compiler differentiates between a) typedef const int cint; const cint i; and b) const int i; const typeof(a) j; I would have expected a warning for a) but not b), but both 'clang --std=gnu89' and 'gcc --pedantic --std=gnu89' warn about both of b as well, and don't warn for newer standards. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
