* cp-tree.h (FN_TRY_BLOCK_P): New macro.
* init.c (perform_member_init): Remove obstack machinations.
(expand_cleanup_for_base): Likewise.
(finish_init_stmts): Mark the statement-expression as used.
* method.c (emit_thunk): Use tree-generating functions, not
RTL.
(do_build_copy_constructor): Likewise.
(do_build_assign_ref): Likewise.
(synthesize_method): Likewise. Keep track of line numbers.
* pt.c (tsubst_expr): Handle various kinds of try blocks.
* semantics.c (expand_stmts): Remove.
(begin_function_try_block): Set FN_TRY_BLOCK_P.
(finish_function_try_block): Be careful rechaining
function try blocks.
(expand_stmt): Loop through all the statements at a given level.
(exapnd_body): Be careful with line-numbers here too. Prepare for
being called directly from the parser.