[Bug preprocessor/43195] New: #pragma once and -H

[d dot g dot gorbachev at gmail dot com]

The "#pragma once" directive can cause spurious "Multiple include guards may be
useful for:" messages.

$ cat bar.h
#pragma once

$ cat foo.c
#include "bar.h"

$ gcc -S -H foo.c
. bar.h
Multiple include guards may be useful for:
bar.h


-- 
           Summary: #pragma once and -H
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: preprocessor
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: d dot g dot gorbachev at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43195