gcc/c-family/
* c.opt (Wterminate): New.
gcc/cp/
* cp-gimplify.c (cp_genericize_r): Track TRY_BLOCK and
MUST_NOT_THROW_EXPR, warn about a THROW_EXPR directly within a
MUST_NOT_THROW_EXPR.
(cp_genericize_data): Add try_block field.
(cp_genericize_tree): Initialize it.
* except.c (expand_end_catch_block): Set TREE_NO_WARNING on
implicit rethrow.
From-SVN: r222842
