What is the bug :
For bit field structure (see example if you
don't see what I mean),
gdb 4.18 is able to show the structure values
but it is not able to modify correctly the
structure
[ it seems to use the right number of bits
but not the right offset in the structure ]
I have extracted this 'bug example' from
my project :
C source :
----------
struct x86_gate {
unsigned int offset_low:16, /* offset 0..15 */
selector:16,
word_count:8,
access:8,
offset_high:16; /* offset 16..31 */
};
struct x86_gate idt0 ;
GDB session :
-------------
(gdb) print /x idt0
$1 = {
offset_low = 0x0,
selector = 0x78,
word_count = 0x0,
access = 0x85,
offset_high = 0x0
}
(gdb) set idt0.access = 0xe5
(gdb) print /x idt0
$2 = {
offset_low = 0xe5, <<<<<<<<< HERE !!! >>>>>>>>>>>
selector = 0x78,
word_count = 0x0,
access = 0x85,
offset_high = 0x0
}
System Information
------------------
Linux Distribution Red Hat 6.0 on i586
Build from sources :
. GNU gcc 2.95.2
. GNU gdb 4.18
Please, may you notify me if a patch exists ? Thanks
Regards.
-- Yves Martin --- Elève-ingénieur ENSIMAG - 3e année ---
Adr : R.H.B. Ch. 765 [EMAIL PROTECTED]
2 av. J. O. GRENOBLE Tél: 04 76 44 20 01
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