[Bug c++/11285] New: GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[Bug c++/11285] New: GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[numien at deathwyrm dot net]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285

           Summary: GCC 3.3 C++ for Sparc Solaris assumes system header
                    files are C.
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: numien at deathwyrm dot net
                CC: gcc-bugs@gcc.gnu.org

I noticed this problem first with GCC 3.2.3, upgraded to the latest build I
could get to compile (3.3), and it still exists. It only seems to appear on
Sparc Solaris, I could not reproduce it on any other platform, including Sparc
Linux.

Essentially, it appears any header file included as "#include <header>" is
assumed to be C, even when included in C++ (.cc, .C, .cpp all tested) code. This
causes errors if function overloading is used.

I reproduced the problem with a very simple test, one header file in
/usr/include containing an overloaded function definition, and a C++ main that
only includes the header and returns 1. The .ii file looks correct, but on
compile it complains that declaration of C function `int test(int, int)'
conflicts with `int test(int)'.

Your bug reporting guidelines specify to include the preprocessed .ii file, but
I don't see any method of attaching a file here. If one would be helpful, please
feel free to e-mail me.

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[bangerth at dealii dot org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285


bangerth at dealii dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


------- Additional Comments From bangerth at dealii dot org  2003-06-22 18:17 -------
System headers really _are_ usually C, not C++. On many systems,
they are therefore wrapped into
  extern "C" {
    ...
  }
blocks if C++ is used. Can you check whether that is the case on
your system as well?

Wolfgang

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[numien at deathwyrm dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285



------- Additional Comments From numien at deathwyrm dot net  2003-06-22 23:05 -------
The real system headers mostly are, yes, the ones I'm creating for my own
development aren't. And those are the ones with problems.

As I mentioned earlier, I reproduced the problem with a very simple set of
files. The contents of the two simple files are as below.

/usr/include/test.h
------------------------
int test (int a);
int test (int a, int b);
------------------------

test.cpp
------------------
#include <test.h>
int main(void) {
	return 1;
}
------------------


Also of note, when I put the file in the current directory and include it with
'#include "test.h"' it compiles fine.

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-06-22 23:25:46
               date|                            |


------- Additional Comments From pinskia at physics dot uc dot edu  2003-06-22 23:25 -------
the config file of solaris does not define NO_IMPLICIT_EXTERN_C which says the header files in the 
system path is c++ aware.  I think this is a feature until Sun (your provider) releases a system with 
c++ aware headers.  I do not know when that is, you have to ask them.

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[numien at deathwyrm dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285



------- Additional Comments From numien at deathwyrm dot net  2003-06-22 23:33 -------
Perhaps I am misunderstanding what you said, but they look fairly C++ aware to
me...here's a clip from the top of stdio.h...

I'm using Solaris 9, perhaps they implemented that with this version?
In which file could I find that value to change? I can test it here.

---------------------------------------------------------------------
<snip>
/*
 * Copyright (c) 1993-2001, by Sun Microsystems, Inc.
 * All rights reserved.
 */
<snip>
/*
 * Allow global visibility for symbols defined in
 * C++ "std" namespace in <iso/stdio_iso.h>.
 */
#if __cplusplus >= 199711L
using std::FILE;
using std::size_t;
using std::fpos_t;
<snip>
using std::perror;
#endif
                                                                                
#ifdef  __cplusplus
extern "C" {
#endif
<etc, etc...>

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285



------- Additional Comments From pinskia at physics dot uc dot edu  2003-06-22 23:36 -------
Then it looks like this can be fix for 2.9 (aka Solaris 9) only.  Then the feature needs to be disabled 
on Solaris 9.

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[gdr at integrable-solutions dot net]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285



------- Additional Comments From gdr at integrable-solutions dot net  2003-06-23 07:45 -------
Subject: Re:  GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

"numien at deathwyrm dot net" <gcc-bugzilla@gcc.gnu.org> writes:

| Perhaps I am misunderstanding what you said, but they look fairly C++ aware to
| me...here's a clip from the top of stdio.h...

Indeed.

| I'm using Solaris 9, perhaps they implemented that with this version?
| In which file could I find that value to change? I can test it here.
| 
| ---------------------------------------------------------------------
| <snip>
| /*
|  * Copyright (c) 1993-2001, by Sun Microsystems, Inc.
|  * All rights reserved.
|  */
| <snip>
| /*
|  * Allow global visibility for symbols defined in
|  * C++ "std" namespace in <iso/stdio_iso.h>.
|  */
| #if __cplusplus >= 199711L

Aha, I get it.  Currently g++ (or libstdc++-v3 I can tell which)
defines __cplusplus to 1L because we don't know how to handle Sun's C
system headers which are already C++ aware.  The point is:  In this
specific case, it is not that Sun's are not C++ aware, the problem is
that they *are*, but we don't know how to build libstdc++-v3 with such
systems. Put differently, it is our fault.  The fix is not obbious though.
There should be an open issue related to __cplusplus somewhere in the
archive. 

-- gaby

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[gdr at integrable-solutions dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285



------- Additional Comments From gdr at integrable-solutions dot net  2003-06-23 07:45 -------
Subject: Re:  GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

"pinskia at physics dot uc dot edu" <gcc-bugzilla@gcc.gnu.org> writes:

| Then it looks like this can be fix for 2.9 (aka Solaris 9) only.  Then the feature needs to be disabled 
| on Solaris 9.

See past discussion on an issue related to __cplucplus.

-- Gaby

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[numien at deathwyrm dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285



------- Additional Comments From numien at deathwyrm dot net  2003-07-29 18:50 -------
Took a bit of time to test and get back here (mostly due to problems with time
and Suns, gotta love 'em sometimes) but Andrew Pinski's solution seems to work
perfectly. Thanks.

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[dhazeghi at yahoo dot com]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285


dhazeghi at yahoo dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4                         |---

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[jason at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285


jason at gcc dot gnu dot org changed:

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


------- Additional Comments From jason at gcc dot gnu dot org  2003-08-29 22:35 -------


*** This bug has been marked as a duplicate of 7327 ***

[Bug c++/11285] GCC 3.3 C++ for Sparc Solaris assumes system header files are C.

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-27 21:03 -------
Subject: Bug 11285

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	mkoch@gcc.gnu.org	2005-04-27 21:03:00

Modified files:
	libjava        : ChangeLog 
	libjava/gnu/java/net/protocol/file: Connection.java 
	libjava/java/net: URLClassLoader.java 

Log message:
	2005-04-27  Chris Burdess  <dog@gnu.org>
	
	* gnu/java/net/protocol/file/Connection.java: Return correct content
	length for directory listing.
	* java/net/URLClassLoader.java: Correction for URLClassLoader, bug
	#11285: return valid URLs for directories.i

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/ChangeLog.diff?cvsroot=gcc&r1=1.3568&r2=1.3569
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/gnu/java/net/protocol/file/Connection.java.diff?cvsroot=gcc&r1=1.10&r2=1.11
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/java/net/URLClassLoader.java.diff?cvsroot=gcc&r1=1.28&r2=1.29



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11285