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| author | zack <zack@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-07-19 23:32:55 +0000 |
|---|---|---|
| committer | zack <zack@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-07-19 23:32:55 +0000 |
| commit | bdc33d98e0804bcc1335555d95e6fee8f63cfe99 (patch) | |
| tree | 39921ed41b276ac3aff0d0ef4a2b474488855a70 /gcc/c-tree.h | |
| parent | c46d3bb3bd8a45c53ec3838f83a8e4653f4dee72 (diff) | |
| download | gcc-bdc33d98e0804bcc1335555d95e6fee8f63cfe99.tar.gz | |
* c-decl.c (named_labels, shadowed_labels, label_level_chain)
(push_label_level, pop_label_level): Kill.
(struct binding_level): Rename level_chain to outer.
Add outer_function field. Change parm_flag, function_body,
keep, keep_if_subblocks to 1-bit bitfields of type bool.
(current_function_level): New variable.
(keep_next_level_flag, keep_next_if_subblocks): Change type to bool.
(keep_next_level, declare_parm_level, warn_if_shadowing):
Update to match.
(struct language_function): Kill named_labels, shadowed_labels fields.
(c_init_decl_processing, start_function, c_push__function_context)
(c_pop_function_context): No need to muck with named_labels nor
shadowed_labels.
(make_binding_level): No need to clear the structure here.
(pop_binding_level): Always operate on current_binding_level.
Update current_function_level if necessary.
(pushlevel): Don't clear named_labels. Update current_function_level
if necessary. Use "true" and "false" where appropriate.
(poplevel): Diagnose labels defined but not used, or vice
versa, and clear out label-meanings leaving scope, while
walking down the decls list, for all binding levels.
Handle LABEL_DECLs appearing in the shadowed list.
pop_binding_level takes no arguments.
(pushdecl_function_level): Use current_function_level.
(make_label, bind_label): New static functions.
(declare_label): New exported function.
(lookup_label, define_label): Rewritten for new data structure.
(shadow_label): Kill.
* c-tree.h: Prototype declare_label; don't prototype
push_label_level, pop_label_level, nor shadow_label.
* c-parse.in: Remove all calls to push_label_level and
pop_label_level. Use declare_label for __label__ decls.
* doc/extend.texi: Clarify that __label__ can be used to
declare labels with local scope in any nested block, not
just statement expressions. Cross-reference nested functions
section from local labels section.
testsuite:
* gcc.dg/noncompile/label-1.c: New comprehensive test case for
diagnostics of ill-formed constructs involving labels.
* gcc.dg/noncompile/label-lineno-1.c: Add error regexp for
the new 'previously defined here' message.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@69597 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/c-tree.h')
| -rw-r--r-- | gcc/c-tree.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/gcc/c-tree.h b/gcc/c-tree.h index 876f116f606..fb12e7a8d00 100644 --- a/gcc/c-tree.h +++ b/gcc/c-tree.h @@ -197,6 +197,7 @@ extern void clear_parm_order (void); extern int complete_array_type (tree, tree, int); extern void declare_parm_level (void); extern void undeclared_variable (tree); +extern tree declare_label (tree); extern tree define_label (location_t, tree); extern void finish_decl (tree, tree, tree); extern tree finish_enum (tree, tree, tree); @@ -214,13 +215,10 @@ extern void parmlist_tags_warning (void); extern void pending_xref_error (void); extern void c_push_function_context (struct function *); extern void c_pop_function_context (struct function *); -extern void pop_label_level (void); -extern void push_label_level (void); extern void push_parm_decl (tree); extern tree pushdecl_top_level (tree); extern void pushtag (tree, tree); extern tree set_array_declarator_type (tree, tree, int); -extern tree shadow_label (tree); extern void shadow_tag (tree); extern void shadow_tag_warned (tree, int); extern tree start_enum (tree); |