2003-04-10 Zack Weinberg <zack@codesourcery.com> * c-decl.c (struct binding_level): Add shadowed_tags and function_body; remove this_block, tag_transparent, and subblocks_tag_transparent; update comments. (clear_binding_level, lookup_tag_reverse): Kill. (make_binding_level): Use ggc_alloc_cleared or memset. (lookup_tag): Remove struct binding_level* parameter. All callers changed. Just look at IDENTIFIER_TAG_VALUE, and current_binding_level->tags if asked for thislevel_only or if we might have to diagnose "struct foo; union foo;" (pushlevel): Ignore argument. Do not push another binding level on the transition from the parameters to the top level of the function body; just tweak the flags and proceed. (poplevel): Overhaul. Clear IDENTIFIER_TAG_VALUEs; on exiting a function body, separate the parameter list from the top-level local variables. (set_block): Do nothing. (pushtag): Set IDENTIFIER_TAG_VALUE and add an entry to shadowed_tags if necessary. (warn_if_shadowing): Nuke the special case for local shadowing parameter. (pushdecl): Do not create a shadow entry if we are replacing an older decl in the same binding level. (pushdecl_function_level): Tweak for new way of indicating function scope. (shadow_tag_warned): Use TYPE_NAME, not lookup_tag_reverse. (start_function): Don't set subblocks_tag_transparent. (finish_function): Fix up the binding_level stack for totally empty functions. Otherwise, don't call poplevel. * c-common.c (shadow_warning): MANDATORY argument is no longer necessary. Always use plain warning. * c-common.h: Update to match. * cfglayout.c (scope_to_insns_initialize): Clear block when we hit the FUNCTION_DECL. * function.c: Do not create cyclic tree structure. 2003-04-10 Zack Weinberg <zack@codesourcery.com> * c-tree.h (struct lang_identifier): Replace global_value, local_value members with symbol_value, tag_value. Kill implicit_decl and limbo_value. (IDENTIFIER_GLOBAL_VALUE, IDENTIFIER_LOCAL_VALUE, IDENTIFIER_LIMBO_VALUE, IDENTIFIER_IMPLICIT_DECL, C_MISSING_PROTOTYPE_WARNED): Kill. (IDENTIFIER_SYMBOL_VALUE, IDENTIFIER_TAG_VALUE, C_DECL_IMPLICIT, C_DECL_ISNT_PROTOTYPE): New. (C_DECL_ANTICIPATED): Rename to C_DECL_INVISIBLE. (implicit_decl_warning, lookup_name_current_level, record_function_scope_shadow): Don't prototype. (pushdecl_function_level): Prototype. * c-decl.c (truly_local_externals): New variable. (struct binding_level): Adjust commentary. (get_function_binding_level, clear_limbo_values, record_function_scope_shadow): Kill. (lookup_name_current_level, implicit_decl_warning): Are now static. (any_external_decl, record_external_decl): New static functions. (clone_underlying type): Split out of pushdecl. (c_print_identifier): Update to match changes to struct lang_identifier. (poplevel): Delete #if 0 block. Make externals invisible instead of clearing their IDENTIFIER_SYMBOL_VALUEs. Don't call clear_limbo_values. Refer to IDENTIFIER_SYMBOL_VALUE not IDENTIFIER_GLOBAL_VALUE or IDENTIFIER_LOCAL_VALUE. (duplicate-decls): For real parm decl after a forward decl, set TREE_ASM_WRITTEN here. Allow void foo(...) followed by foo(...) { } with only a warning. Say whether a previous declaration was implicit. (warn_if_shadowing): Now handles all shadowing, not just local-over-local. Clarify comments. (pushdecl): Rewritten. There is no longer a distinction between global and local symbol values; they're all IDENTIFIER_SYMBOL_VALUE. Call record_external_decl on all DECL_EXTERNAL decls, and use any_external_decl to check against previous externals. Kill #if 0 blocks. Don't tolerate error_mark_node being NULL. (pushdecl_top_level): Handle only those cases which Objective C (the only user) needs. (pushdecl_function_level): New function. (implicitly_declare): Create ordinary decls with C_DECL_IMPLICIT set. Recycle old decls, however they got created. (lookup_name): It's always IDENTIFIER_SYMBOL_VALUE. Return 0 for C_DECL_INVISIBLE symbols. (lookup_name_current_level): Likewise. Use chain_member. (c_make_fname_decl): Don't muck with DECL_CONTEXT. Use pushdecl_function_level. (builtin_function): Use C_DECL_INVISIBLE. (start_function): Don't muck with IDENTIFIER_IMPLICIT_DECL. Use C_DECL_ISNT_PROTOTYPE and C_DECL_IMPLICIT. (store_parm_decls): It's IDENTIFIER_SYMBOL_VALUE now. (identifier_global_value): Same. Must scan global_binding_level in extremis. * c-typeck.c (undeclared_variable): New static function, split from build_external_ref. (build_external_ref): Use DECL_CONTEXT, not IDENTIFIER_LOCAL_VALUE, to decide whether a local hides an instance variable. Restructure for clarity. * objc/objc-act.c: Use identifier_global_value, not IDENTIFIER_GLOBAL_VALUE. cp: * decl.c: Update all calls to shadow_warning. testsuite: * gcc.c-torture/execute/builtin-noret-2.c: New. * gcc.c-torture/execute/builtin-noret-2.x: New. XFAIL builtin-noret-2.c at -O1 and above. * gcc.dg/redecl.c: New. * gcc.dg/Wshadow-1.c: Update error regexps. From-SVN: r65460 |
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INSTALL | ||
boehm-gc | ||
config | ||
contrib | ||
fastjar | ||
gcc | ||
include | ||
libf2c | ||
libffi | ||
libiberty | ||
libjava | ||
libobjc | ||
libstdc++-v3 | ||
maintainer-scripts | ||
zlib | ||
.cvsignore | ||
COPYING | ||
COPYING.LIB | ||
ChangeLog | ||
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Makefile.def | ||
Makefile.in | ||
Makefile.tpl | ||
README | ||
config-ml.in | ||
config.guess | ||
config.if | ||
config.sub | ||
configure | ||
configure.in | ||
install-sh | ||
libtool.m4 | ||
ltcf-c.sh | ||
ltcf-cxx.sh | ||
ltcf-gcj.sh | ||
ltconfig | ||
ltmain.sh | ||
missing | ||
mkdep | ||
mkinstalldirs | ||
move-if-change | ||
symlink-tree | ||
ylwrap |
README
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the file COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs.html for how to report bugs usefully.