[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: unassig...@gcc.gnu.org
        ReportedBy: zhao86.scho...@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