[Bug regression/25531] New: [4.0/4.1/4.2 Regression]: Handling of __attribute__ ((alias ("foo+X")))

["uros at kss-loka dot si" <gcc-bugzilla at gcc dot gnu dot org>]

A regresion with __attribute__ ((alias ("foo+X))) breaks newlib builds. The
testcase is distilled from newlib-1.13.0/newlib/libc/ctype/ctype_.c:

--cut here--
static const char _foo_b[4] = {
  'a', 'b', 'c', 'd'
};

extern const char _foo_[4] __attribute__ ((alias ("_foo_b+2")));
--cut here--

gcc-3.4:
> ~/gcc-build-34/gcc/cc1 x.c
 test

> more x.s
        .file   "x.c"
        .section        .rodata
        .type   _foo_b, @object
        .size   _foo_b, 4
_foo_b:
        .byte   97
        .byte   98
        .byte   99
        .byte   100
.globl _foo_
        .set    _foo_,_foo_b+2
        .section        .note.GNU-stack,"",@progbits
        .ident  "GCC: (GNU) 3.4.5 20051110 (prerelease)"

gcc-4.x:
~/gcc-build/gcc/cc1 x.c
x.c:5: error: '_foo_' aliased to undefined symbol '_foo_b+2'


-- 
           Summary: [4.0/4.1/4.2 Regression]: Handling of __attribute__
                    ((alias ("foo+X")))
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: uros at kss-loka dot si


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25531