[Bug preprocessor/33473] New: GCC does not correctly generate dependencies correctly for precompiled headers

[Bug preprocessor/33473] New: GCC does not correctly generate dependencies correctly for precompiled headers

[rswan at signetic dot ca]

Hello;

GCC does not correctly generate dependencies correctly with g++ -MD when
precompiled headers are used. I've attached an example which generates main.d
while compiling main.cpp. main.cpp includes include/bink.h. When the include
path contains the precompiled bink.h.gch (only), main.d does not contain any
dependency on bink.h.gch.

When the compiler includes bink.h, main.d includes the dependency.

I get the same behavior with version 3.4.6 and 4.1.2

> gcc --version
gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)


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           Summary: GCC does not correctly generate dependencies correctly
                    for precompiled headers
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: preprocessor
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rswan at signetic dot ca


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33473

[Bug preprocessor/33473] GCC does not correctly generate dependencies correctly for precompiled headers

[rswan at signetic dot ca]

------- Comment #1 from rswan at signetic dot ca  2007-09-18 13:38 -------
Created an attachment (id=14221)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14221&action=view)
testcase archive

Extract archive. Invoke make within gch_bug directory. Bug seen in generated
main.d dependency output. Optionally edit Makefile (see comments within) to
demonstrate correct behaviour when not using precompiled headers.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33473

[Bug preprocessor/33473] GCC does not correctly generate dependencies for precompiled headers

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2007-09-20 00:46 -------
I think this is a dup of bug 14933.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33473

[Bug preprocessor/33473] GCC does not correctly generate dependencies for precompiled headers

[rswan at signetic dot ca]

------- Comment #3 from rswan at signetic dot ca  2007-09-20 01:10 -------
(In reply to comment #2)
> I think this is a dup of bug 14933.
> 
I agree. Sorry. Should I mark it as a duplicate?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33473

[Bug preprocessor/33473] GCC does not correctly generate dependencies for precompiled headers

[tromey at gcc dot gnu dot org]

------- Comment #4 from tromey at gcc dot gnu dot org  2007-11-28 19:07 -------


*** This bug has been marked as a duplicate of 14933 ***


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tromey at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33473