PR c/20402
* c-parser.c (c_parser_struct_or_union_specifier): Don't fall
through into call to parser_xref_tag after parse error.
(c_parser_struct_declaration): Consistently return NULL_TREE on
error.
testsuite:
* gcc.dg/noncompile/920923-1.c: Detail expected diagnostics for
new parser.
From-SVN: r96363
* c-tree.h (struct c_declarator): New id_loc field.
* c-pragma.h (c_lex_with_flags): Take position reference.
* c-lex.c (c_lex_with_flags): Set passed-in location from cpp token,
iff USE_MAPPED_LOCATION. (Type doesn't match otherwise.)
(c_lex): Pass dummy location to c_lex_with_flags.
* c-parser.c (c_lex_one_token): Set c_token's location using
c_lex_with_flags, instead of input_location, which might be "ahead".
(c_parser_direct_declarator): Set declarator's id_loc from
c_token's id_loc.
* c-decl.c (grokdeclarator): Set DECL_SOURCE_LOCATION from
declarator's id_loc, rather than probably-imprecise input_location.
(build_id_declarator): Initialize c_declarator's id_loc field.
From-SVN: r96329
* c-decl.c (finish_function): Use SET_EXPR_LOCATION instead of
unavailable annotate_with_file_line, if USE_MAPPED_LOCATION.
* tree-cfg.c (remove_bb): If USE_MAPPED_LOCATION, change type of
local variable loc. Change logic appropriately.
* tree-vect-transform.c (vect_finish_stmt_generation): Use
EXPR_LOCATION rather than EXPR_LOCUS if USE_MAPPED_LOCATION.
* c-parser.c (c_parser_for_statement): Initialize loc variable.
* tree.h (DECL_IS_BUILTIN): Temporarily revert definition of
DECL_IS_BUILTIN in the USE_MAPPED_LOCATION because of jc1 issues.
From-SVN: r96045
