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| author | Markus Metzger <markus.t.metzger@intel.com> | 2014-05-15 10:57:36 +0200 |
|---|---|---|
| committer | Markus Metzger <markus.t.metzger@intel.com> | 2014-05-20 14:18:10 +0200 |
| commit | e59fa00fa07f37aa04d38aecaf8098e01aaf253d (patch) | |
| tree | 0d8f16048122b342d48c2b03acfb8438c57bfb57 /gdb/testsuite | |
| parent | 00b32ff21f710a5eed92c9fdf51c32103bcc4176 (diff) | |
| download | gdb-e59fa00fa07f37aa04d38aecaf8098e01aaf253d.zip gdb-e59fa00fa07f37aa04d38aecaf8098e01aaf253d.tar.gz gdb-e59fa00fa07f37aa04d38aecaf8098e01aaf253d.tar.bz2 | |
btrace: no replay without history
When using a reverse execution command without execution history, GDB
might end up in a state where replaying has been started but remains
at the current instruction. This state is illegal.
Do not step if there is no execution history to avoid this.
2014-05-20 Markus Metzger <markus.t.metzger@intel.com>
* record-btrace.c (record_btrace_step_thread): Check for empty history.
testsuite/
* gdb.btrace/nohist.exp: New.
Diffstat (limited to 'gdb/testsuite')
| -rw-r--r-- | gdb/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.btrace/nohist.exp | 46 |
2 files changed, 50 insertions, 0 deletions
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index 01a6b92..6767997 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2014-05-20 Markus Metzger <markus.t.metzger@intel.com> + + * gdb.btrace/nohist.exp: New. + 2014-05-20 Yao Qi <yao@codesourcery.com> * lib/gdb.exp (gdb_init): Set timeout if test file is under diff --git a/gdb/testsuite/gdb.btrace/nohist.exp b/gdb/testsuite/gdb.btrace/nohist.exp new file mode 100644 index 0000000..c0a1a87 --- /dev/null +++ b/gdb/testsuite/gdb.btrace/nohist.exp @@ -0,0 +1,46 @@ +# This testcase is part of GDB, the GNU debugger. +# +# Copyright 2014 Free Software Foundation, Inc. +# +# Contributed by Intel Corp. <markus.t.metzger@intel.com> +# +# 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/>. + +# check for btrace support +if { [skip_btrace_tests] } { return -1 } + +# start inferior +standard_testfile x86-record_goto.S +if [prepare_for_testing nohist.exp $testfile $srcfile] { + return -1 +} + +if ![runto_main] { + return -1 +} + +proc check_not_replaying {} { + gdb_test "info record" [join [list \ + "Active record target: record-btrace" \ + "Recorded 0 instructions in 0 functions for \[^\\\r\\\n\]*" \ + ] "\r\n"] +} + +gdb_test_no_output "record btrace" + +check_not_replaying + +gdb_test "reverse-continue" "No more reverse-execution history\.\r\n.*" + +check_not_replaying |