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

[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

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

[manu at gcc dot gnu dot org]

------- Comment #1 from manu at gcc dot gnu dot org  2010-02-27 19:29 -------
testing a patch


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu dot org
         AssignedTo|unassigned at gcc dot gnu   |manu at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-02-27 19:29:49
               date|                            |


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

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

[manu at gcc dot gnu dot org]

------- Comment #2 from manu at gcc dot gnu dot org  2010-02-28 20:12 -------
Approved patch http://gcc.gnu.org/ml/gcc-patches/2010-02/msg01246.html


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |41998
              nThis|                            |


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

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

[manu at gcc dot gnu dot org]

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------- Comment #3 from manu at gcc dot gnu dot org  2010-04-09 16:09 -------
Subject: Bug 43195

Author: manu
Date: Fri Apr  9 16:08:42 2010
New Revision: 158169

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158169
Log:
2010-04-09  Manuel López-Ibáñez <manu@gcc.gnu.org>

        PR cpp/43195
libcpp/
        * files.c (report_missing_guard): Test for #pragma once.
testsuite/
        * gcc.dg/cpp/pr43195.c: New.
        * gcc.dg/cpp/pr43195.h: New.


Added:
    trunk/gcc/testsuite/gcc.dg/cpp/pr43195.c
    trunk/gcc/testsuite/gcc.dg/cpp/pr43195.h
Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/libcpp/ChangeLog
    trunk/libcpp/files.c


-- 


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

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

[manu at gcc dot gnu dot org]

------- Comment #4 from manu at gcc dot gnu dot org  2010-04-09 16:09 -------
FIXED for GCC 4.6


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


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