[cfe-dev] PATCH: Cleanup function redeclaration representations

[Doug Gregor]

On Thu, Apr 24, 2008 at 9:45 AM, Neil Booth <neil at daikokuya.co.uk> wrote:
>  However, it's nice to complain about / reject the "x" in things like
>
>  void foo1 (void) { extern int x(void); }
>  void foo2 (void) { extern double x(void); }
>
>  $ gcc /tmp/bug.c
>  /tmp/bug.c: In function 'foo2':
>  /tmp/bug.c:2: error: conflicting types for 'x'
>  /tmp/bug.c:1: error: previous declaration of 'x' was here
>
>  This is undefined behaviour according to the C standard; but there
>  is little value in letting such stuff pass.

Very nice... it would definitely be helpful to diagnose this sort of problem.

  - Doug