constify struct block in some places

This makes some spots in gdb, particularly general_symbol_info, use a
"const struct block", then fixes the fallout.

The justification is that, ordinarily, blocks ought to be readonly.
Note though that we can't add "const" in the blockvector due to block
relocation.  This can be done once blocks are made independent of the
program space.

2014-06-18  Tom Tromey  <tromey@redhat.com>

	* varobj.c (varobj_create): Update.
	* valops.c (value_of_this): Update.
	* tracepoint.c (add_local_symbols, scope_info): Update.
	* symtab.h (struct general_symbol_info) <block>: Now const.
	* symtab.c (skip_prologue_sal)
	(default_make_symbol_completion_list_break_on)
	(skip_prologue_using_sal): Update.
	* stack.h (iterate_over_block_locals)
	(iterate_over_block_local_vars): Update.
	* stack.c (print_frame_args): Update.
	(iterate_over_block_locals, iterate_over_block_local_vars): Make
	parameter const.
	(get_selected_block): Make return type const.
	* python/py-frame.c (frapy_block): Update.
	* python/py-block.c (gdbpy_block_for_pc): Update.
	* p-exp.y (%union) <bval>: Now const.
	* mi/mi-cmd-stack.c (list_args_or_locals): Update.
	* mdebugread.c (mylookup_symbol, parse_procedure): Update.
	* m2-exp.y (%union) <bval>: Now const.
	* linespec.c (get_current_search_block): Make return type const.
	(create_sals_line_offset, find_label_symbols): Update.
	* inline-frame.c (inline_frame_sniffer, skip_inline_frames):
	Update.
	(block_starting_point_at): Make "block" const.
	* infrun.c (insert_exception_resume_breakpoint): Make "b" const.
	(check_exception_resume): Update.
	* guile/scm-frame.c (gdbscm_frame_block): Update.
	* guile/scm-block.c (gdbscm_lookup_block): Update.
	* frame.h (get_frame_block): Update.
	(get_selected_block): Make return type const.
	* frame.c (frame_id_inner): Update.
	* f-valprint.c (info_common_command_for_block)
	(info_common_command): Update.
	* dwarf2loc.c (dwarf2_find_location_expression)
	(dwarf_expr_frame_base, dwarf2_compile_expr_to_ax)
	(locexpr_describe_location_piece): Update.
	* c-exp.y (%union) <bval>: Now const.
	* breakpoint.c (resolve_sal_pc): Update.
	* blockframe.c (get_frame_block):Make return type const.
	(get_pc_function_start, get_frame_function, find_pc_sect_function)
	(block_innermost_frame): Update.
	* block.h (blockvector_for_pc, blockvector_for_pc_sect)
	(block_for_pc, block_for_pc_sect): Update.
	* block.c (blockvector_for_pc_sect, blockvector_for_pc): Make
	'pblock' const.
	(block_for_pc_sect, block_for_pc): Make return type const.
	* ax-gdb.c (gen_expr): Update.
	* alpha-mdebug-tdep.c (find_proc_desc): Update.
	* ada-lang.c (ada_read_renaming_var_value): Make 'block' const.
	(ada_make_symbol_completion_list, ada_add_exceptions_from_frame)
	(ada_read_var_value): Update.
	* ada-exp.y (struct name_info) <block>: Now const.
	(%union): Likewise.
	(block_lookup): Constify.
This commit is contained in:
Tom Tromey
2013-03-12 09:51:37 -06:00
parent 5d376983ca
commit 3977b71f1d
32 changed files with 133 additions and 75 deletions

View File

@ -52,11 +52,11 @@
--- hopefully pointing us at the call instruction, or its delay
slot instruction. */
struct block *
const struct block *
get_frame_block (struct frame_info *frame, CORE_ADDR *addr_in_block)
{
CORE_ADDR pc;
struct block *bl;
const struct block *bl;
int inline_count;
if (!get_frame_address_in_block_if_available (frame, &pc))
@ -86,7 +86,7 @@ get_frame_block (struct frame_info *frame, CORE_ADDR *addr_in_block)
CORE_ADDR
get_pc_function_start (CORE_ADDR pc)
{
struct block *bl;
const struct block *bl;
struct bound_minimal_symbol msymbol;
bl = block_for_pc (pc);
@ -118,7 +118,7 @@ get_pc_function_start (CORE_ADDR pc)
struct symbol *
get_frame_function (struct frame_info *frame)
{
struct block *bl = get_frame_block (frame, 0);
const struct block *bl = get_frame_block (frame, 0);
if (bl == NULL)
return NULL;
@ -136,7 +136,7 @@ get_frame_function (struct frame_info *frame)
struct symbol *
find_pc_sect_function (CORE_ADDR pc, struct obj_section *section)
{
struct block *b = block_for_pc_sect (pc, section);
const struct block *b = block_for_pc_sect (pc, section);
if (b == 0)
return 0;
@ -338,7 +338,7 @@ block_innermost_frame (const struct block *block)
frame = get_current_frame ();
while (frame != NULL)
{
struct block *frame_block = get_frame_block (frame, NULL);
const struct block *frame_block = get_frame_block (frame, NULL);
if (frame_block != NULL && contained_in (frame_block, block))
return frame;