[Bug other/4372] #pragma weak pthread* inclusion causes applications to crash without a linker error when one forgets to link with -lpthread

["aoliva at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #9 from aoliva at gcc dot gnu dot org  2005-11-09 20:13 -------
Subject: Bug 4372

Author: aoliva
Date: Wed Nov  9 20:13:41 2005
New Revision: 106703

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=106703
Log:
PR other/4372
* tree.h (IDENTIFIER_TRANSPARENT_ALIAS): New.
(TREE_DEPRECATED): Adjust comment.  Check for a DECL.
* c-common.c (handle_weakref_attribute): New.
(c_common_attribute_table): Add weakref.
* configure.ac (HAVE_GAS_WEAKREF): Check for weakref support
in the assembler.
* configure, config.in: Rebuilt.
* defaults.h (ASM_OUTPUT_WEAKREF): Define if HAVE_GAS_WEAKREF.
* doc/extend.texi: Document weakref attribute.
* varasm.c (ultimate_transparent_alias_target): New
(assemble_name): Use it.
(weak_finish_1): Split out of...
(weak_finish): ... and deal with weakrefs in...
(weakref_targets): ... new list.
(globalize_decl): Clean up weakref_targets.
(do_assemble_alias): Handle weakrefs.
(finish_aliases_1): Do not reject weakrefs to external symbols.
(assemble_alias): Handle weakrefs.

Added:
    trunk/gcc/testsuite/gcc.dg/attr-weakref-1.c
    trunk/gcc/testsuite/gcc.dg/attr-weakref-1a.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-common.c
    trunk/gcc/config.in
    trunk/gcc/configure
    trunk/gcc/configure.ac
    trunk/gcc/defaults.h
    trunk/gcc/doc/extend.texi
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.old-deja/g++.abi/vtable2.C
    trunk/gcc/tree.h
    trunk/gcc/varasm.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=4372