2009-07-08 Manuel López-Ibáñez <manu@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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@149354
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