Hi Michael,
I try the 20080930 branch and got:
(gdb) start
Temporary breakpoint 1 at 0x80483c1: file 1.c, line 20.
Starting program: /home/teawater/rec/a.out
Temporary breakpoint 1, main () at 1.c:20
20 int b = 0;
(gdb) record
(gdb) n
21 int c = 1;
(gdb)
24 printf ("a = %d b = %d c = %d\n", a, b, c);
(gdb)
a = 0 b = 0 c = 1
25 b = cool ();
(gdb) rn
No more reverse-execution history.
main () at 1.c:20
20 int b = 0;
(gdb) n
Cannot find bounds of current function
This is because:
case TARGET_WAITKIND_NO_HISTORY:
/* Reverse execution: target ran out of history info. */
print_stop_reason (NO_HISTORY, 0);
stop_stepping (ecs);
return;
This place doesn't set stop_pc but in step_1:
if (find_pc_partial_function (stop_pc, &name,
&tp->step_range_start,
&tp->step_range_end) == 0)
error (_("Cannot find bounds of current function"));
So I add code to set stop_pc. I think this bug will affect main tree
too. So this patch is for both 20080930 branch and main tree.
2008-10-19 Hui Zhu <teawater@gmail.com>
* infrun.c (handle_inferior_event): Set "stop_pc" when
TARGET_WAITKIND_NO_HISTORY.
Thanks,
Hui
------------------------------------------------------------------------
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-10-19 Hui Zhu <teawater@gmail.com>
+
+ * infrun.c (handle_inferior_event): Set "stop_pc" when
+ TARGET_WAITKIND_NO_HISTORY.
+
2008-10-18 Pedro Alves <pedro@codesourcery.com>
* infrun.c (adjust_pc_after_break): Do nothing if executing in
--- a/infrun.c
+++ b/infrun.c
@@ -2237,6 +2237,7 @@ handle_inferior_event (struct execution_
case TARGET_WAITKIND_NO_HISTORY:
/* Reverse execution: target ran out of history info. */
+ stop_pc = read_pc ();
print_stop_reason (NO_HISTORY, 0);
stop_stepping (ecs);
return;