[Bug breakpoints/15179] Dprintf interrupts execution when condition is false

["teawater at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=15179

teawater <teawater at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |teawater at gmail dot com

--- Comment #5 from teawater <teawater at gmail dot com> 2013-03-21 09:00:18 UTC ---
(In reply to comment #4)
> (In reply to comment #3)
> 
> > I can't reproduce this problem on my Fedora 16 box and Lucid machine.
> > 
> > I think the inferior stops because of this message "warning: Cannot call
> > inferior functions, you have broken Linux kernel i386 NX (non-executable pages)
> > support!".   What is your linux kernel?  It should be related to Bug 15187.
> 
> I can reproduce on a Ubuntu 64bit where there is not "warning: Cannot call
> inferior functions...".  I can also reproduce it on an old SLED machine that
> does not have that warning (although I used GDB 7.5 on the SLED machine).
> 
> Maybe you can try running gdb -nx to make sure you don't have extra settings
> that might affect this?

I use a ubuntu 11.10 64bit.  I cannot reproduce this issue too.

gdb -nx ./a.out
GNU gdb (GDB) 7.6.50.20130321-cvs
Copyright (C) 2013 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".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/teawater/tmp/a.out...done.
(gdb) l
1    #include <unistd.h>
2    #include <stdio.h>
3    
4    int main() {
5    for (int i=0;i<20;i++) {
6      printf("hello");
7       printf("friend\n");
8        printf("home\n");
9     sleep(1);
10    }
(gdb) dprintf 8,"welcome\n"
Dprintf 1 at 0x4005b1: file 2.c, line 8.
(gdb) r
Starting program: /home/teawater/tmp/a.out 
hellofriend
welcome
home
hellofriend
welcome
home
hellofriend
welcome
home
hellofriend
welcome
home

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