With the latest version bootstrapped on PC debian:
$ /home/etienne/projet/toolchain/bin/gcc -v
Reading specs from /home/etienne/projet/toolchain/lib/gcc/i686-pc-linux-
gnu/4.0.0/specs
Configured with: ../configure --prefix=/home/etienne/projet/toolchain --enable-
languages=c
Thread model: posix
gcc version 4.0.0 20041017 (experimental)
compiling this code:
typedef struct {
unsigned limit : 16;
unsigned base : 24;
unsigned accessed : 1; /* if 1 */
unsigned writable : 1; /* if 1 */
unsigned expansion_direction : 1; /* down if 1 */
unsigned cste_10 : 2;
unsigned dpl : 2;
unsigned present : 1;
unsigned limit_msb : 4;
unsigned available : 1;
unsigned cste_0 : 1;
unsigned big : 1;
unsigned granularity : 1;
unsigned base_msb : 8;
} __attribute__ ((packed)) dataseg_t;
dataseg_t dataseg = {
.limit = 0xFFFF,
.base = 0,
.accessed = 1,
.writable = 1,
.cste_10 = 2,
.present = 1,
.limit_msb = 0xFF,
.big = 0,
.granularity = 1
};
leads to this warning (line of .limit_msb):
$ /home/etienne/projet/toolchain/bin/gcc -Os -c tmp.c
tmp.c:25: warning: large integer implicitly truncated to unsigned type
Etienne.
--
Summary: strange warning
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: etienne_lorrain at yahoo dot fr
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18057
