[Bug target/54083] FAIL: gcc.dg/torture/pr53922.c on *-apple-darwin*

["dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54083

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |howarth at bromo dot
                   |                            |med.uc.edu

--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-09-23 21:35:49 UTC ---
A patch has been posted at
http://gcc.gnu.org/ml/gcc-patches/2012-09/msg01602.html and I have also tested
it on x86_64-apple-darwin10. Note that it won't fix the failure for 32-bit
hppa*-*-hpux*.

The fix used also works for gcc.dg/attr-weakref-1.c

--- ../_clean/gcc/testsuite/gcc.dg/attr-weakref-1.c    2012-03-12
19:39:57.000000000 +0100
+++ gcc/testsuite/gcc.dg/attr-weakref-1.c    2012-09-23 23:23:33.000000000
+0200
@@ -4,12 +4,13 @@
 // This test requires support for undefined weak symbols.  This support
 // is not available on hppa*-*-hpux*.  The test is skipped rather than
 // xfailed to suppress the warning that would otherwise arise.
-// { dg-skip-if "" { "*-*-darwin*" "hppa*-*-hpux*" } "*" { "" } }
+// { dg-skip-if "" { "hppa*-*-hpux*" } "*" { "" } }
 // For kernel modules and static RTPs, the loader treats undefined weak
 // symbols in the same way as undefined strong symbols.  The test
 // therefore fails to load, so skip it.
 // { dg-skip-if "" { "*-*-vxworks*" && nonpic } "*" { "-non-static" } }
 // { dg-options "-O2" }
+// { dg-options "-Wl,-undefined,dynamic_lookup" { target *-*-darwin* } }
 // { dg-additional-sources "attr-weakref-1a.c" }

 // Copyright 2005 Free Software Foundation, Inc.

For the record, following the suggestions of Richard Guenther and Tobias Burnus
on IRC, I have tested the attached patch which mimics gcc.dg/attr-weakref-1.c
and also works on x86_64-apple-darwin10 and powerpc-apple-darwin9.