[Bug gdb/16678] New: record problem with recursion

["vicshen at gmail dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16678

            Bug ID: 16678
           Summary: record problem with recursion
           Product: gdb
           Version: 7.7
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: vicshen at gmail dot com

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.

GNU gdb (GDB) 7.7

(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 0x4004a9: file a.c, line 8.
Starting program: /home/jianshen/1/a 

Temporary breakpoint 1, main () at a.c:8
8           factorial(5);
(gdb) record
(gdb) n
9           return 0;
(gdb) rn
factorial (x=2) at a.c:3
3          int result = x * factorial(x-1);
(gdb) bt
#0  factorial (x=2) at a.c:3
#1  0x0000000000400499 in factorial (x=3) at a.c:3
#2  0x0000000000400499 in factorial (x=4) at a.c:3
#3  0x0000000000400499 in factorial (x=5) at a.c:3
#4  0x00000000004004b3 in main () at a.c:8

rn should return to line 8 but it jumps to line 3 in another frame.

I searched and found Hui Zhu has once provided a patch for this issue.
See https://sourceware.org/ml/gdb/2009-03/msg00134.html
But in the latest version (7.7) it's still could be reproduced.  It might be a
missing bug.

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