gdb/

2010-08-17  Pedro Alves  <pedro@codesourcery.com>

	PR breakpoints/11371

	* breakpoint.c (breakpoint_init_inferior): Decrement the
	location's reference count instead of deleting right away.
	(bpstat_free): Decrement the location's reference count.  Make
	static.
	(bpstat_copy): Increment the location's reference count.
	(bpstat_find_breakpoint): Adjust.
	(bpstat_num): Adjust.
	(print_it_typical): Adjust.  Use the breakpoint pointer in the
	bpstat instead of the location's owner.
	(bpstat_alloc): Remove const qualifier from the 'bl' parameter.
	Adjust to record the location's owner in the bpstat.
	(watchpoint_check): Use the breakpoint pointer in the bpstat
	instead of the location's owner.
	(bpstat_check_breakpoint_conditions): Don't handle
	bp_watchpoint_scope here.  Use the breakpoint pointer in the
	bpstat instead of the location's owner.
	(bpstat_stop_status): Defer inferior function calls to after
	building the bpstat list.  Handle bp_watchpoint_scope here.  Use
	the breakpoint pointer in the bpstat instead of the location's
	owner.
	(bpstat_what): Use the breakpoint pointer in the bpstat instead of
	the location's owner.
	(free_bp_location): Don't walk bpstats clearing locations.
	(incref_bp_location): New.
	(decref_bp_location): New.
	(breakpoint_auto_delete): Use the breakpoint pointer in the bpstat
	instead of the location's owner.
	(update_global_location_list): Clear the location's owner, and
	decrement the location's reference count instead of deleting it
	right away.
	(breakpoint_retire_moribund): Decrement the location's reference
	count instead of deleting it right away.
	(bpstat_remove_bp_location): Delete.
	(bpstat_remove_breakpoint): New.
	(bpstat_remove_bp_location_callback): Delete.
	(bpstat_remove_breakpoint_callback): New.
	(delete_breakpoint): Iterate over all threads' stop_bpstat's
	clearing references to the breakpoint that is being deleted.

	* breakpoint.h (struct bp_location) <refc>: New field.
	<owner>: Update comments.
	(bpstat_free): Delete declaration.
	(struct bpstats): Change the type of the breakpoint_at field to
	struct breakpoint point, from struct bp_location pointer.  Add new
	field bp_location_at.

gdb/testsuite/
2010-08-17  Jan Kratochvil  <jan.kratochvil@redhat.com>
	    Pedro Alves  <pedro@codesourcery.com>

	PR breakpoints/11371

	* gdb.base/watch-cond-infcall.exp: New file.
	* gdb.base/watch-cond-infcall.c: New file.

2 files changed, 94 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/watch-cond-infcall.c b/gdb/testsuite/gdb.base/watch-cond-infcall.c
new file mode 100644
index 0000000..a3b2959
--- /dev/null
+++ b/gdb/testsuite/gdb.base/watch-cond-infcall.c
@@ -0,0 +1,33 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2010 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+volatile int var;
+
+int
+return_1 (void)
+{
+  return 1;
+}
+
+int
+main(void)
+{
+  var++;
+  var++;	/* watchpoint-stop */
+
+  return 0;     /* break-at-exit */
+}
diff --git a/gdb/testsuite/gdb.base/watch-cond-infcall.exp b/gdb/testsuite/gdb.base/watch-cond-infcall.exp
new file mode 100644
index 0000000..419f1bd
--- /dev/null
+++ b/gdb/testsuite/gdb.base/watch-cond-infcall.exp
@@ -0,0 +1,61 @@
+# Copyright 2010 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Test for watchpoints with conditions that involve inferior function
+# calls.
+
+set testfile "watch-cond-infcall"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+
+if { [build_executable ${testfile}.exp ${testfile} ${testfile}.c {debug}] } {
+    untested ${testfile}.exp
+    return -1
+}
+
+proc test_watchpoint { hw teststr } {
+    global testfile
+    global pf_prefix
+
+    set old_pf_prefix $pf_prefix
+    lappend pf_prefix "$teststr:"
+
+    clean_restart ${testfile}
+
+    if { ![runto main] } then {
+	fail "run to main"
+	return
+    }
+
+    if { ! $hw } {
+	gdb_test_no_output "set can-use-hw-watchpoints 0" ""
+    }
+
+    gdb_test "watch var if return_1 ()" "atchpoint .*: var"
+
+    gdb_breakpoint [gdb_get_line_number "break-at-exit"]
+
+    gdb_test "continue" \
+	"atchpoint \[0-9\]+: var\r\n\r\nOld value = 0\r\nNew value = 1\r\n.*watchpoint-stop.*" \
+	"continue"
+
+    set pf_prefix $old_pf_prefix
+}
+
+if { ![target_info exists gdb,no_hardware_watchpoints] } {
+    test_watchpoint 1 "hw"
+}
+
+test_watchpoint 0 "sw"