[Bug bootstrap/66744] New: Bootstrap failure due to conflicting access() on i686-w64-mingw32

["MatthewS.Grochowalski at ge dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66744

            Bug ID: 66744
           Summary: Bootstrap failure due to conflicting access() on
                    i686-w64-mingw32
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: MatthewS.Grochowalski at ge dot com
  Target Milestone: ---

Attempting to build trunk r225313 with --enable-languages=c,c++,ada
--enable-checking=release --disable-nls --disable-werror --disable-multilib
--build=i686-w64-mingw32 --host=i686-w64-mingw32
--with-gmp=/c/toolchain/prereqs --with-mpc=/c/toolchain/prereqs
--with-mpfr=/c/toolchain/prereqs --prefix=/c/toolchain/gcc-mingw
--target=i686-w64-mingw32 --disable-win32-registry --disable-shared
--with-sysroot=/c/toolchain/gcc-mingw --enable-version-specific-runtime-libs

Using gcc version 4.9.2 (i686-win32-dwarf-rev2, Built by MinGW-W64 project)

Stage1 fails with the following:
../../gcc/gcc/tree-sra.c:875:46: error: macro "access" requires 2 arguments,
but only 1 given
   struct access *access = new struct access ();
                                              ^
../../gcc/gcc/tree-sra.c:2410:46: error: macro "access" requires 2 arguments,
but only 1 given
   struct access *access = new struct access ();
                                              ^
Makefile:1071: recipe for target `tree-sra.o' failed
make[3]: *** [tree-sra.o] Error 1

It's conflicting with access macro definition in the mingw32-w64 C io.h header:
#ifdef __USE_MINGW_ACCESS
/*  Old versions of MSVCRT access() just ignored X_OK, while the version
    shipped with Vista, returns an error code.  This will restore the
    old behaviour  */
static inline int __mingw_access (const char *__fname, int __mode) {
  return  _access (__fname, __mode & ~X_OK);
}

#define access(__f,__m)  __mingw_access (__f, __m)
#endif

This appears to have been introduced by r223956.