[Bug c++/53005] New: GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.

[Bug c++/53005] New: GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.

[zhao86.scholar at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005

             Bug #: 53005
           Summary: GCC moves the called C function address and parameters
                    to the wrong stack position, when making C-style
                    calling of C functions in a C function with inline
                    assembly code.
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zhao86.scholar@gmail.com


Created attachment 27167
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27167
C code to reproduce the bug.

When making C-style calling of C functions in a C function with inline assembly
code, GCC moves the called C function address and parameters to the wrong stack
position, which is overwriting the values of other variables in the stack.   
The problem can be reproduced using the C code in the attached.

The exact version of GCC:
4.2.1

The system type:
i686-apple-darwin11

The options given when GCC was configured/built:
/private/var/tmp/llvmgcc42/llvmgcc42-2335.15~25/src/configure
--disable-checking --enable-werror --prefix=/Developer/usr/llvm-gcc-4.2
--mandir=/share/man --enable-languages=c,objc,c++,obj-c++
--program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/
--with-slibdir=/usr/lib --build=i686-apple-darwin11
--enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2335.15~25/dst-llvmCore/Developer/usr/local
--program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11
--target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1

[Bug c/53005] GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |c
            Version|unknown                     |4.2.1
           Severity|major                       |normal

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-04-16 10:12:41 UTC ---
GCC 4.2 is not supported, please try a current release.

[Bug c/53005] GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.

[zhao86.scholar at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005

--- Comment #2 from Lili Zhao <zhao86.scholar at gmail dot com> 2012-04-16 10:17:43 UTC ---
Do you mean we should use a later GCC version?
(In reply to comment #1)
> GCC 4.2 is not supported, please try a current release.

[Bug c/53005] GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-04-16 10:47:15 UTC ---
Yes.

If you got GCC 4.2 from Apple then you could report the bug to Apple, not here.

We do not support GCC 4.2, so it is pointless to report bugs for that version
here, they won't be fixed.  If you want support here, you need to use a
supported version.

[Bug c/53005] GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.

[manu at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |manu at gcc dot gnu.org
         Resolution|                            |INVALID

--- Comment #4 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2012-04-16 11:13:28 UTC ---
See: http://gcc.gnu.org/wiki/FAQ#gcc42apple

[Bug c/53005] GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.

[manu at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005

--- Comment #5 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2012-04-16 11:18:51 UTC ---
Lili Zhao, I forgot to say, but feel free to reopen this if you can reproduce
the bug with GCC 4.7. Thanks for the report anyway, and sorry we cannot help
you.

[Bug c/53005] GCC moves the called C function address and parameters to the wrong stack position, when making C-style calling of C functions in a C function with inline assembly code.

[zhao86.scholar at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005

--- Comment #6 from Lili Zhao <zhao86.scholar at gmail dot com> 2012-04-17 02:43:31 UTC ---
Thanks all the same! I'll try on the latest gcc version to see if the bug
reproduce. Thank you!

2012/4/16 manu at gcc dot gnu.org <gcc-bugzilla@gcc.gnu.org>

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53005
>
> --- Comment #5 from Manuel López-Ibáñez <manu at gcc dot gnu.org>
> 2012-04-16 11:18:51 UTC ---
> Lili Zhao, I forgot to say, but feel free to reopen this if you can
> reproduce
> the bug with GCC 4.7. Thanks for the report anyway, and sorry we cannot
> help
> you.
>
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