------- Comment #1 from rguenth at gcc dot gnu dot org 2009-12-31 16:50 -------
Hum. Looks like the C FE somehow munges the uLL constant.
c_parser_cast_expression (parser=0xb77b0b44, after=0x0)
at /home/richard/src/trunk/gcc/c-parser.c:5000
(gdb) call c_parser_peek_token (parser)
$8 = (c_token *) 0xb77b0b44
(gdb) p *$8
$9 = {type = CPP_NUMBER, id_kind = C_ID_NONE, keyword = RID_MAX,
pragma_kind = PRAGMA_NONE, value = 0xb77a3750, location = 479}
(gdb) p $8->value
$10 = (tree) 0xb77a3750
(gdb) call debug_tree ($10)
<integer_cst 0xb77a3750 type <integer_type 0xb7742480 long long unsigned int>
constant 0x100000000>
thus ok from the lexer, but
Run till exit from #0 c_parser_binary_expression (parser=0xb77b0b44,
after=0x0) at /home/richard/src/trunk/gcc/c-parser.c:4984
0x0818a327 in c_parser_conditional_expression (parser=0xb77b0b44, after=0x0)
at /home/richard/src/trunk/gcc/c-parser.c:4645
4645 cond = c_parser_binary_expression (parser, after);
Value returned is $16 =
{value = 0xb7740740, original_code = GE_EXPR, original_type = 0x0}
(gdb) call debug_tree ($16->value)
<ge_expr 0xb7740740
type <integer_type 0xb77422a0 int public SI
size <integer_cst 0xb772e258 constant 32>
unit size <integer_cst 0xb772e090 constant 4>
align 32 symtab 0 alias set -1 canonical type 0xb77422a0 precision 32
min <integer_cst 0xb772e210 -2147483648> max <integer_cst 0xb772e228
2147483647>
pointer_to_this <pointer_type 0xb7742c00>>
arg 0 <c_maybe_const_expr 0xb7740720
type <integer_type 0xb7742300 unsigned int public unsigned SI size
<integer_cst 0xb772e258 32> unit size <integer_cst 0xb772e090 4>
align 32 symtab 0 alias set -1 canonical type 0xb7742300 precision
32 min <integer_cst 0xb772e270 0> max <integer_cst 0xb772e240 4294967295>
pointer_to_this <pointer_type 0xb774d360>>
arg 1 <nop_expr 0xb77b0c08 type <integer_type 0xb7742300 unsigned int>
arg 0 <var_decl 0xb77b1000 ffff8000>>>
arg 1 <integer_cst 0xb77a37e0 type <integer_type 0xb7742300 unsigned int>
constant 2147483648>
t.c:4:18>
here the constant is alrady munged and thus the promotion doesn't happen.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jsm28 at gcc dot gnu dot org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |wrong-code
Last reconfirmed|0000-00-00 00:00:00 |2009-12-31 16:50:18
date| |
Version|unknown |4.4.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42544
