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From: "Erik Niessen" <erik.niessen@gmail.com>
To: gdb@sourceware.org
Subject: inconsistency in printing out the value of an unsigned short in gdb
Date: Tue, 25 Sep 2007 14:19:00 -0000	[thread overview]
Message-ID: <f21fe8a50709250710i75147c23o5015a81e3a470a78@mail.gmail.com> (raw)

Hi all,

I have a simple program:

typedef unsigned short UInt16;
const UInt16 c_uint16 = 0xFE;
UInt16 g_uint16 = 0xFE;
const unsigned short c_ushort = 0xFE;

int main() {
    printf("c_ushort=%#X\n",c_ushort);
    printf("c_uint16=%#X\n",c_uint16);
    printf("g_uint16=%#X\n",g_uint16);
    return 0;
}
I use  g++ version 4.0 and gdb  version 6.6
g++ -g constants.cpp -o ./constants
running this exec gives the following output as expected
c_ushort=0XFE
c_uint16=0XFE
g_uint16=0XFE
But running it in gdb
gdb ./constants
(gdb) b main
(gdb) p /x c_ushort
$1 = 0xfe
(gdb) p /x g_uint16
$2 = 0xfe
(gdb) p /x c_uint16
$3 = 0xfffe

Weird why does it not print the value 0xfe like the other ones.

When I use gcc-4.0 it works as expected

Any ideas??

Cheers,
   Erik


             reply	other threads:[~2007-09-25 14:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-25 14:19 Erik Niessen [this message]
2007-09-25 15:57 ` Daniel Jacobowitz
2007-09-26  8:33   ` Erik Niessen
2007-09-26 21:38     ` Daniel Jacobowitz
2007-09-27 11:27       ` Erik Niessen
2007-09-27 12:15         ` Daniel Jacobowitz

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