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[Bug debug/36728] [stack]: gdb doesn't work with stack alignment
- From: "hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Jul 2008 13:19:45 -0000
- Subject: [Bug debug/36728] [stack]: gdb doesn't work with stack alignment
- References: <bug-36728-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from hjl dot tools at gmail dot com 2008-07-04 13:19 -------
Created an attachment (id=15853)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15853&action=view)
A testcase without drap
[hjl@gnu-6 stack-10]$
/export/build/gnu/gcc-stack-internal/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc-stack-internal/build-x86_64-linux/gcc/ -m32 bar.c -g
[hjl@gnu-6 stack-10]$ gdb a.out
GNU gdb 6.8.50.20080605-cvs
Copyright (C) 2008 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-unknown-linux-gnu"...
(gdb) b foo
Breakpoint 1 at 0x80483b1: file bar.c, line 11.
(gdb) r
Starting program: /export/home/hjl/bugs/gcc/stack-10/a.out
Breakpoint 1, foo (dummy1=1, dummy2=2, dummy3=3, dummy4=4, dummy5=5, dummy6=6,
size=30) at bar.c:11
11 xxx = 2;
(gdb) next
12 ptr [1]= 30;
(gdb)
13 printf ("%d: %d\n", xxx, ptr [1]);
(gdb) p xxx
$1 = 3
(gdb) p ptr [1]
$2 = 0 '\0'
(gdb)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36728