From: "Marc Khouzam" <marc.khouzam@ericsson.com>
To: <gdb@sourceware.org>
Subject: ProcessRecord problem with recursion
Date: Fri, 20 Mar 2009 01:18:00 -0000 [thread overview]
Message-ID: <6D19CA8D71C89C43A057926FE0D4ADAA07152198@ecamlmw720.eamcs.ericsson.se> (raw)
Hi,
I'm having problems with ProcessRecord and recursion.
It looks like the reverse-next operation behaves like
reverse-step when dealing with a recursive method.
I have GDB HEAD from the 18th of March, with the patches included in
http://sourceware.org/ml/gdb-patches/2009-03/msg00375.html
http://sourceware.org/ml/gdb-patches/2009-03/msg00005.html
http://sourceware.org/ml/gdb-patches/2009-01/msg00444.html
Here is a program and session that shows the problem:
GNU gdb (GDB) 6.8.50.20090318-cvs
[...]
(gdb) l
1 int factorial(int x) {
2 if (x == 1) return 1;
3 int result = x * factorial(x-1);
4 return result;
5 }
6
7 int main() {
8 factorial(5);
9 return 0;
10 }
(gdb) start
Temporary breakpoint 1 at 0x804847b: file a.cc, line 8.
Starting program: /local/home/lmckhou/testing/a.out
Temporary breakpoint 1, main () at a.cc:8
8 factorial(5);
(gdb) rec
(gdb) s
factorial (x=5) at a.cc:2
2 if (x == 1) return 1;
(gdb) n
3 int result = x * factorial(x-1);
(gdb) n
4 return result;
(gdb) rn
factorial (x=4) at a.cc:5
5 }
Notice how the reverse-next(rn) command jumped to the end
of the next factorial method on the stack (x=4 instead of x=5).
Thanks
Marc
next reply other threads:[~2009-03-20 1:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-20 1:18 Marc Khouzam [this message]
2009-03-20 3:10 ` Hui Zhu
2009-03-21 8:54 ` Hui Zhu
2014-03-07 2:37 jian shen
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