[Bug c++/35246] declaration of threadprivate variable considered first use

["hailijuan at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #1 from hailijuan at gmail dot com  2008-02-18 04:37 -------
the error message was raised in finish_omp_threadprivate (cp/semantics.c). It
was the field TREE_USED set to 1 that trigered the error. build_aggr_init set
TREE_USED of variable a. the call frame looks like:

=>[1] build_aggr_init(exp = 0xfed99a00, init = 0xfee99ad0, flags = 0), line
1087 in "init.c"
  [2] check_initializer(decl = 0xfed99a00, init = 0xfee99ad0, flags = 0,
cleanup = 0xffbff26c), line 4881 in "decl.c"
  [3] cp_finish_decl(decl = 0xfed99a00, init = 0xfee99ad0, init_const_expr_p =
'\001', asmspec_tree = (nil), flags = 0), line 5292 in "decl.c"
  [4] cp_parser_init_declarator(parser = 0xfee973b0, decl_specifiers = (nil),
checks = (nil), function_definition_allowed_p = '\001', member_p = '\0',
declares_class_or_enum = 0, function_definition_p = (nil)), line 11359 in
"parser.c"
  [5] cp_parser_simple_declaration(parser = 0xfee973b0,
function_definition_allowed_p = '\001'), line 7433 in "parser.c"
  [6] cp_parser_block_declaration(parser = 0xfee973b0, statement_p = '\0'),
line 7333 in "parser.c"
  [7] cp_parser_declaration(parser = 0xfee973b0), line 7249 in "parser.c"
  [8] cp_parser_declaration_seq_opt(parser = 0xfee973b0), line 7144 in
"parser.c"
  [9] cp_parser_translation_unit(parser = 0xfee973b0), line 2847 in "parser.c"
  [10] c_parse_file(), line 19552 in "parser.c"
  [11] c_common_parse_file(set_yydebug = 0), line 1226 in "c-opts.c"
  [12] compile_file(), line 1040 in "toplev.c"
  [13] do_compile(), line 2037 in "toplev.c"
  [14] toplev_main(argc = 0, argv = 0xffbff804), line 2069 in "toplev.c"
  [15] main(argc = 17, argv = 0xffbff804), line 35 in "main.c"

so we'd know if the variables actually used in the source lines before raising
such error messages.


-- 

hailijuan at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hailijuan at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35246