re PR c++/5636 (gcc-3.0.3, memory leakage: function that take a string as parameter will not call local variable destructors if exception is thrown.)
PR c++/5636
* tree.h (CLEANUP_EH_ONLY): New macro.
* stmt.c (expand_decl_cleanup_eh): New fn.
(expand_cleanups): Check CLEANUP_EH_ONLY.
* c-semantics.c (genrtl_decl_cleanup): Just take the CLEANUP_STMT.
Use expand_decl_cleanup_eh.
(expand_stmt): Adjust.
* c-common.h: Adjust prototype.
* cp/semantics.c (nullify_returns_r): Just set CLEANUP_EH_ONLY on
cleanup for nrv.