[PATCH] Set breakpoint on the right line

[Yao Qi <yao@codesourcery.com>]

In gdb.base/watchpoint-hw-hit-once.exp, test scans source and set
breakpoint on the line having "break-at-exit",

  gdb_breakpoint [gdb_get_line_number "break-at-exit"]

However, in watchpoint-hw-hit-once.c, there are two lines having
this key word:

  dummy = 1;	/* Stub to catch break-at-exit after WATCHEE has been hit.  */
  dummy = 2;	/* break-at-exit */

so the test sets breakpoint on the first one, while I think it is
expected to set breakpoint on the second one, as far as I can tell
from the comments in watchpoint-hw-hit-once.c:

  /* Stub lines are present as no breakpoints/watchpoint gets hit if current PC
     already stays on the line PC while entering "step"/"continue".  */

This patch is to change the source matching pattern so that test
can correctly set breakpoint on the right line.  This patch fixes
a fail we found on arm-none-eabi target.  Run it again
on x86_64-linux, no result changes.

gdb/testsuite:

2014-08-12  Yao Qi  <yao@codesourcery.com>

	* gdb.base/watchpoint-hw-hit-once.exp: Set breakpoint on the
	right line.
---
 gdb/testsuite/gdb.base/watchpoint-hw-hit-once.exp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/testsuite/gdb.base/watchpoint-hw-hit-once.exp b/gdb/testsuite/gdb.base/watchpoint-hw-hit-once.exp
index 53de3d5..49c0d6a 100644
--- a/gdb/testsuite/gdb.base/watchpoint-hw-hit-once.exp
+++ b/gdb/testsuite/gdb.base/watchpoint-hw-hit-once.exp
@@ -29,7 +29,7 @@ if ![runto_main] {
 
 gdb_test "rwatch watchee"
 
-gdb_breakpoint [gdb_get_line_number "break-at-exit"]
+gdb_breakpoint [gdb_get_line_number "dummy = 2"]
 
 gdb_test "continue" "Continuing.\r\nHardware read watchpoint \[0-9\]+: watchee\r\n\r\nValue = 0\r\n.*"
 
-- 
1.9.0