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- [ifunc] Fix crash on deleting watchpoint of an autovariable (BZ 637770).

This commit is contained in:
Jan Kratochvil 2010-09-29 01:48:21 +02:00
parent c45f9b5276
commit a161ab2c00
2 changed files with 119 additions and 1 deletions
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111
gdb-bz637770-ifunc-watchpoint-delete.patch Executable file
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@ -0,0 +1,111 @@
commit 30fedadf224a8c119575fcc8a6ced51f0d4aee9f
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Wed Sep 29 01:25:39 2010 +0200
Fix the crash.
commit d101ce597f2d6143e9f023a4444352bceffb2679
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Wed Sep 29 00:42:37 2010 +0200
New testcase for: https://bugzilla.redhat.com/show_bug.cgi?id=637770
diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index de51231..18b7868 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -10560,6 +10560,11 @@ map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *,
/* FUNCTION can be also delete_breakpoint. */
next_related_b = related_breakpoint->related_breakpoint;
function (related_breakpoint, data);
+
+ /* For delete_breakpoint of the last entry of the ring we
+ were traversing we would never get back to B. */
+ if (next_related_b == related_breakpoint)
+ break;
related_breakpoint = next_related_b;
}
while (related_breakpoint != b);
diff --git a/gdb/testsuite/gdb.base/watchpoint-delete.c b/gdb/testsuite/gdb.base/watchpoint-delete.c
new file mode 100644
index 0000000..031ef92
--- /dev/null
+++ b/gdb/testsuite/gdb.base/watchpoint-delete.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/>. */
+
+void
+func (void)
+{
+ volatile int x = 0;
+
+ x++; /* break-here */
+ x++;
+}
+
+int
+main (void)
+{
+ func ();
+
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.base/watchpoint-delete.exp b/gdb/testsuite/gdb.base/watchpoint-delete.exp
new file mode 100644
index 0000000..45bc650
--- /dev/null
+++ b/gdb/testsuite/gdb.base/watchpoint-delete.exp
@@ -0,0 +1,38 @@
+# 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-delete"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+
+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
+ untested ${testfile}.exp
+ return -1
+}
+
+# It is more compatible this way.
+gdb_test_no_output "set can-use-hw-watchpoints 0"
+
+if ![runto_main] {
+ return -1
+}
+
+# Ensure there is a parent frame to create related bp_watchpoint_scope.
+gdb_breakpoint [gdb_get_line_number "break-here"]
+gdb_continue_to_breakpoint "break-here" ".* break-here .*"
+
+gdb_test "watch x" {Watchpoint [0-9]+: x}
+
+gdb_test_no_output {delete $bpnum}

9
gdb.spec
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@ -27,7 +27,7 @@ Version: 7.2
# The release always contains a leading reserved number, start it at 1.
# `upstream' is not a part of `name' to stay fully rpm dependencies compatible for the testing.
Release: 15%{?_with_upstream:.upstream}%{dist}
Release: 16%{?_with_upstream:.upstream}%{dist}
License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ and GPLv2+ with exceptions and GPL+ and LGPLv2+ and GFDL and BSD and Public Domain
Group: Development/Debuggers
@ -451,6 +451,9 @@ Patch511: gdb-bz592031-siginfo-lost-5of5.patch
# Fix .gdb_index for big-endian hosts (Tom Tromey).
Patch512: gdb-gdbindex-bigendian.patch
# [ifunc] Fix crash on deleting watchpoint of an autovariable (BZ 637770).
Patch513: gdb-bz637770-ifunc-watchpoint-delete.patch
BuildRequires: ncurses-devel%{?_isa} texinfo gettext flex bison expat-devel%{?_isa}
Requires: readline%{?_isa}
BuildRequires: readline-devel%{?_isa}
@ -716,6 +719,7 @@ rm -f gdb/jv-exp.c gdb/m2-exp.c gdb/objc-exp.c gdb/p-exp.c
%patch510 -p1
%patch511 -p1
%patch512 -p1
%patch513 -p1
%patch393 -p1
%patch335 -p1
@ -1086,6 +1090,9 @@ fi
%endif
%changelog
* Wed Sep 29 2010 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.2-16.fc14
- [ifunc] Fix crash on deleting watchpoint of an autovariable (BZ 637770).
* Mon Sep 27 2010 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.2-15.fc14
- Revert the -O0 switch formerly to workaround GCC BZ 634757 (cmove bug).
- Remove no longer used BuildRequires: libstdc++.