https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96842
Bug ID: 96842
Summary: enhancement: copy clang Wheader-guard
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
clang checks header guard macros and gcc doesn't.
So code in <stdio.h> like
#ifndef _STDIO_H
#define _STDIO_H_ 1
where the define is different to the previous test, gets caught.
For example:
AIPlayerFactory.h:19:2: warning: 'AMEOBAX_AI_PLAYER_FACTORY_H' is used as a
header guard here, followed by #define of a different macro [-Wheader-guard]
There are about 500 examples of this in Fedora Linux distribution.
