[Bug gdb/12521] New: sizeof() wrong
carlo at alinoe dot com
sourceware-bugzilla@sourceware.org
Sun Feb 27 02:25:00 GMT 2011
http://sourceware.org/bugzilla/show_bug.cgi?id=12521
Summary: sizeof() wrong
Product: gdb
Version: 7.0
Status: NEW
Severity: normal
Priority: P2
Component: gdb
AssignedTo: unassigned@sourceware.org
ReportedBy: carlo@alinoe.com
I have a pure 64-bit machine (x86_64-linux-gnu),
uint64_t is unsigned long is 64 bit.
GNU gdb (GDB) 7.0.1-debian
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
(gdb) p/x -1UL
$1 = 0xffffffff
(gdb) p/x (unsigned long)-1
$2 = 0xffffffff
(gdb) p sizeof(unsigned long)
$3 = 4
(gdb) p/x -1ULL
$4 = 0xffffffffffffffff
(gdb) p/x (unsigned long long)-1
$5 = 0xffffffffffffffff
(gdb) p sizeof(unsigned long long)
$6 = 8
That is the exact output that you'd expect on a 32-bit machine!
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