[commit] Fix checkpoint.exp buffer overflow

[Daniel Jacobowitz <drow@false.org>]

Related to Ulrich's fix for all-registers yesterday; this should
prevent expect internal errors during checkpoint.exp.  I haven't seen
one since I started testing the patch.

-- 
Daniel Jacobowitz
CodeSourcery

2007-03-09  Daniel Jacobowitz  <dan@codesourcery.com>

	* gdb.base/checkpoint.exp: Rewrite 600 checkpoint test to
	collect output incrementally.

Index: checkpoint.exp
===================================================================
RCS file: /home/gcc/repos/src/src/gdb/testsuite/gdb.base/checkpoint.exp,v
retrieving revision 1.4
diff -u -p -r1.4 checkpoint.exp
--- checkpoint.exp	9 Jan 2007 17:59:09 -0000	1.4
+++ checkpoint.exp	9 Mar 2007 13:25:11 -0000
@@ -359,8 +359,21 @@ gdb_expect {
 gdb_breakpoint $break2_loc
 gdb_test "continue" "breakpoint 2.*" "break2 with many checkpoints"
 
-gdb_test "info checkpoints" " 600 .* 0 .*" \
-    "info checkpoints with at least 600 checkpoints"
+set count 0
+set msg "info checkpoints with at least 600 checkpoints"
+gdb_test_multiple "info checkpoints" $msg {
+    -re "  $decimal process \[^\r\]*\r\n" {
+	incr count
+	exp_continue
+    }
+    -re "$gdb_prompt $" {
+	if { $count >= 600 } {
+	    pass $msg
+	} else {
+	    fail $msg
+	}
+    }
+}    
 
 #
 # OK, kill 'em all...