PR/21391
* testsuite/gcc.dg/
20060410.c: New.
* dwarf2out.c (struct die_struct): Add die_perennial_p field.
(premark_used_types_helper): New.
(premark_used_types): New.
(gen_subprogram_die): Call premark_used_types.
(prune_unused_types_walk): Do not prune perennial dies.
* function.c (used_types_insert): New.
* function.h (struct function): Add used_types_hash field.
(used_types_insert): Add prototype.
* Makefile.in (FUNCTION_H): Depend on HASHTAB_H.
* c-parser.c (c_parser_cast_expression): Save casted types in used
types hash table.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@112845
138bc75d-0d04-0410-961f-
82ee72b054a4