[Bug c++/31246] -Wunreachable-code warnings for compiler-generated code
--- Comment #29 from manu at gcc dot gnu dot org 2009-07-07 22:18 --- Subject: Bug 31246 Author: manu Date: Tue Jul 7 22:18:35 2009 New Revision: 149354 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=149354 Log: 2009-07-08 Manuel López-Ibáñez m...@gcc.gnu.org PR c++/31246 * gimplify.c (gimplify_expr): Propagate no_warning flag when gimplifying. * gimple (gimple_build_call_from_tree): Likewise. * tree-cfg.c (remove_useless_stmts_warn_notreached): Check no_warning flag before warning. cp/ * init.c (build_new_1): Set TREE_NO_WARNING for compiler-generated code. * cp-gimplify.c (genericize_eh_spec_block): Likewise. testsuite/ * g++.dg/warn/pr31246.C: New. * g++.dg/warn/pr31246-2.C: New. Added: trunk/gcc/testsuite/g++.dg/warn/pr31246-2.C trunk/gcc/testsuite/g++.dg/warn/pr31246.C Modified: trunk/gcc/ChangeLog trunk/gcc/cp/ChangeLog trunk/gcc/cp/cp-gimplify.c trunk/gcc/cp/init.c trunk/gcc/gimple.c trunk/gcc/gimplify.c trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-cfg.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31246
[Bug c++/31246] -Wunreachable-code warnings for compiler-generated code
--- Comment #30 from manu at gcc dot gnu dot org 2009-07-07 22:20 --- FIXED in GCC 4.5. -- manu at gcc dot gnu dot org changed: What|Removed |Added Status|REOPENED|RESOLVED Resolution||FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31246
[Bug c++/31246] -Wunreachable-code warnings for compiler-generated code
--- Comment #28 from manu at gcc dot gnu dot org 2009-02-07 21:07 --- There is a patch here: http://gcc.gnu.org/ml/gcc-patches/2008-10/msg00972.html -- manu at gcc dot gnu dot org changed: What|Removed |Added URL||http://gcc.gnu.org/ml/gcc- ||patches/2008- ||10/msg00972.html Keywords||patch http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31246
[Bug c++/31246] -Wunreachable-code warnings for compiler-generated code
--- Comment #27 from manu at gcc dot gnu dot org 2008-10-22 08:35 --- (In reply to comment #5) Note, however, that, as far as I can see, such try/catch are *not* in the library code proper, but *all* synthesized by the C++ front-end. Does anyone has any idea where in the C++ front-end this is synthesized? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31246
[Bug c++/31246] -Wunreachable-code warnings for compiler-generated code
--- Comment #26 from gdr at integrable-solutions dot net 2008-08-26 05:45 --- Subject: Re: Strange -Wunreachable-code warning with _GLIBCXX_DEBUG On Sat, Aug 23, 2008 at 1:43 PM, paolo dot carlini at oracle dot com [EMAIL PROTECTED] wrote: --- Comment #23 from paolo dot carlini at oracle dot com 2008-08-23 18:43 --- To be clear, there are no #pragma GCC system_header at all in the entire libsupc++ directory. I hope we don't have to begin... I think I agree. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31246
[Bug c++/31246] -Wunreachable-code warnings for compiler-generated code
--- Comment #25 from manu at gcc dot gnu dot org 2008-08-23 18:50 --- This looks clearer to me. Maybe Jason or Mark have some idea where this code is generated. It should be clear that it is compiler-generated and we can set DECL_ARTIFICIAL or TREE_NO_WARNING. Then we just have to make sure to propagate that. And finally, check it before warning. -- manu at gcc dot gnu dot org changed: What|Removed |Added Summary|Strange -Wunreachable-code |-Wunreachable-code warnings |warnings|for compiler-generated code http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31246
