------- Comment #4 from rguenther at suse dot de 2009-01-29 21:24 ------- Subject: Re: Gcc accepts invalid code
On Thu, 29 Jan 2009, joseph at codesourcery dot com wrote: > > > ------- Comment #2 from joseph at codesourcery dot com 2009-01-29 20:02 > ------- > Subject: Re: New: Gcc accepts invalid code > > On Thu, 29 Jan 2009, hjl dot tools at gmail dot com wrote: > > > inline void foo (); > > > > int > > main () > > { > > foo (); > > return 0; > > } > > [...@gnu-6 gcc]$ gcc /tmp/i.i -S > > If you use -std=c99 -pedantic-errors you get an error, as expected. > You're compiling in gnu89 mode. > > If you use -std=c99 without -pedantic-errors you get a duplicate warning: > > t.c:1: warning: inline function 'foo' declared but never defined > t.c:1: warning: inline function 'foo' declared but never defined I think the frontend should, in C89 mode and if just issueing a warning, set DECL_EXTERNAL properly on the decl. Richard. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39026