+2010-01-19 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ * breakpoint.c (watchpoint_check): Check the call
+ gdbarch_in_function_epilogue_p before calling frame_find_by_id.
+ Extend the comment.
+ * config/djgpp/fnchange.lst: Add translations for
+ watchpoint-cond-gone.exp, watchpoint-cond-gone.c and
+ watchpoint-cond-gone-stripped.c.
+
2010-01-19 Tom Tromey <tromey@redhat.com>
PR c++/8000:
struct gdbarch *frame_arch = get_frame_arch (frame);
CORE_ADDR frame_pc = get_frame_pc (frame);
+ /* in_function_epilogue_p() returns a non-zero value if we're still
+ in the function but the stack frame has already been invalidated.
+ Since we can't rely on the values of local variables after the
+ stack has been destroyed, we are treating the watchpoint in that
+ state as `not changed' without further checking. Don't mark
+ watchpoints as changed if the current frame is in an epilogue -
+ even if they are in some other frame, our view of the stack
+ is likely to be wrong and frame_find_by_id could error out. */
+ if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc))
+ return WP_VALUE_NOT_CHANGED;
+
fr = frame_find_by_id (b->watchpoint_frame);
within_current_scope = (fr != NULL);
within_current_scope = 0;
}
- /* in_function_epilogue_p() returns a non-zero value if we're still
- in the function but the stack frame has already been invalidated.
- Since we can't rely on the values of local variables after the
- stack has been destroyed, we are treating the watchpoint in that
- state as `not changed' without further checking. Don't mark
- watchpoints as changed if the current frame is in an epilogue -
- even if they are in some other frame, our view of the stack
- is likely to be wrong. */
- if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc))
- return WP_VALUE_NOT_CHANGED;
-
if (within_current_scope)
/* If we end up stopping, the current frame will get selected
in normal_stop. So this call to select_frame won't affect
@V@/gdb/testsuite/gdb.base/watchpoint-solib.c @V@/gdb/testsuite/gdb.base/wp-solib.c
@V@/gdb/testsuite/gdb.base/watchpoint-hw.exp @V@/gdb/testsuite/gdb.base/wp-hw.exp
@V@/gdb/testsuite/gdb.base/watchpoint-solib.exp @V@/gdb/testsuite/gdb.base/wp-solib.exp
+@V@/gdb/testsuite/gdb.base/watchpoint-cond-gone.exp @V@/gdb/testsuite/gdb.base/wpcondg.exp
+@V@/gdb/testsuite/gdb.base/watchpoint-cond-gone.c @V@/gdb/testsuite/gdb.base/wpcondg.c
+@V@/gdb/testsuite/gdb.base/watchpoint-cond-gone-stripped.c @V@/gdb/testsuite/gdb.base/wpcondgs.c
@V@/gdb/testsuite/gdb.cell/coremaker-spu.c @V@/gdb/testsuite/gdb.cell/core-spu.c
@V@/gdb/testsuite/gdb.cell/ea-cache-spu.c @V@/gdb/testsuite/gdb.cell/ea-spu.c
@V@/gdb/testsuite/gdb.cell/mem-access-spu.c @V@/gdb/testsuite/gdb.cell/mem-spu.c
+2010-01-19 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ * gdb.base/watchpoint-cond-gone.exp, gdb.base/watchpoint-cond-gone.c,
+ gdb.base/watchpoint-cond-gone-stripped.c: New.
+
2010-01-19 Tom Tromey <tromey@redhat.com>
PR c++/8000:
--- /dev/null
+/* 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/>. */
+
+void
+jumper (void (*jumpto) (void))
+{
+ (*jumpto) ();
+}
--- /dev/null
+/* 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/>. */
+
+extern void jumper (void (*jumpto) (void));
+
+static void
+func (void)
+{
+ volatile int c;
+
+ c = 5;
+ c = 10; /* watchpoint-here */
+ c = 20;
+}
+
+int
+main (void)
+{
+ jumper (func);
+
+ return 0;
+}
--- /dev/null
+# 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/>.
+
+set testfile "watchpoint-cond-gone"
+set srcfile ${testfile}.c
+set srcfilestripped ${testfile}-stripped.c
+set objfilestripped ${objdir}/${subdir}/${testfile}-stripped.o
+set binfile ${objdir}/${subdir}/${testfile}
+
+# We need to generate a function without DWARF to crash older GDB.
+# Stepping into a dynamic function trampoline or stepping out of MAIN may work
+# but it is not a reliable FAIL case.
+
+if { [gdb_compile "${srcdir}/${subdir}/${srcfilestripped}" "${objfilestripped}" object {}] != ""
+ || [gdb_compile "${srcdir}/${subdir}/${srcfile} ${objfilestripped}" "${binfile}" executable {debug}] != "" } {
+ untested watchpoint-cond-gone.exp
+ return -1
+}
+
+clean_restart ${testfile}
+
+# Problem does not occur otherwise.
+gdb_test "set can-use-hw-watchpoints 0"
+
+if ![runto_main] {
+ return -1
+}
+
+gdb_breakpoint [gdb_get_line_number "watchpoint-here"]
+gdb_continue_to_breakpoint "Place to set the watchpoint"
+
+# The condition `c == 30' is the subject being tested.
+gdb_test "watch c if c == 30" "" "Place the watchpoint"
+
+# We may stay either in the function itself or only at the first instruction of
+# its caller depending on the epilogue unwinder (or valid epilogue CFI) presence.
+gdb_test "finish" \
+ "Watchpoint .* deleted because the program has left the block in.*which its expression is valid..*in (jumper|func).*" \
+ "Catch the no longer valid watchpoint"
projects / thirdparty / binutils-gdb.git / commitdiff
