[Bug c++/37594] New: Assembler reports wrong symbol already defined

[Bug c++/37594] New: Assembler reports wrong symbol already defined

[chris+gcc at qwirx dot com]

Using this test code:

// #define _FILE_OFFSET_BITS 64
// #include <fcntl.h>
// #include <features.h>
// extern "C" int __REDIRECT (open, (__const char *__file, int __oflag, ...),
open64)
//      __nonnull ((1));

extern "C" int open (__const char *__file, int __oflag, ...) __asm__
("open64");

extern "C" int
open(const char *path, int flags, ...)
{
        return 0;
}

extern "C" int
open64 (__const char *path, int flags, ...)
{
        return 0;
}

gcc reports the following error:

g++ -g -g -Wall -Wundef -I../../lib/win32 -I../../lib/common
-DBOX_VERSION="\"trunk_2278M\""  -DBOX_MODULE="\"lib/intercept\"" -c
intercept.cpp -o ../../debug/lib/intercept/intercept.o
/tmp/ccSJqEux.s: Assembler messages:
/tmp/ccSJqEux.s:32: Error: symbol `open64' is already defined

However, open64() is not already defined. If anything, open() is already
defined, by both a redirect and a definition. Commenting out either allows the
code to compile.


-- 
           Summary: Assembler reports wrong symbol already defined
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: chris+gcc at qwirx dot com
 GCC build triplet: i386-linux-gnu
  GCC host triplet: i386-linux-gnu
GCC target triplet: i386-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37594

[Bug c++/37594] Assembler reports wrong symbol already defined

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2008-09-19 22:42 -------
open64 in this case is defined twice in the assembly.
You said that open is open64 via:
extern "C" int open (__const char *__file, int __oflag, ...) __asm__
("open64");


-- 

pinskia at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37594