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| author | Jan Kratochvil <jan.kratochvil@redhat.com> | 2014-01-03 22:06:12 +0100 |
|---|---|---|
| committer | Jan Kratochvil <jan.kratochvil@redhat.com> | 2014-01-03 22:06:36 +0100 |
| commit | 305705207e0831e6387706065e59f91296ba0d0a (patch) | |
| tree | ed834da7297a96dc1faf31eadabb7352df57f2fb /tests/testfilecfaloop.c | |
| parent | a6141d27691a68a4af5eb48ab10d27e74d3c2a6b (diff) | |
| download | elfutils-jankratochvil/cfaloop.tar.gz | |
Detect infinite backtraces.jankratochvil/cfaloop
libdwfl/
2014-01-03 Jan Kratochvil <jan.kratochvil@redhat.com>
Detect infinite backtraces.
* dwfl_frame.c (state_alloc): Initialize CFA.
* frame_unwind.c (expr_eval): Remove parameter frame, add parameter
elfclass. Move elfclass to handle_cfi. Replace recursive call by
state->unwound->CFA.
(new_unwound): Initialize CFA.
(handle_cfi): Move elfclass here. Compute CFA. Update expr_eval
caller parameters.
* libdwflP.h (DWFL_ERRORS): Add UNWIND_BAD_CFA.
(struct Dwfl_Frame): Add field cfa.
tests/
2014-01-03 Jan Kratochvil <jan.kratochvil@redhat.com>
* Makefile.am (TESTS): Add run-cfaloop.sh.
(EXTRA_DIST): Add run-cfaloop.sh, testfilecfaloop.S,
testfilecfaloop.bz2, testfilecfaloop.c and testfilecfaloop.core.bz2.
* run-cfaloop.sh: New file.
* testfilecfaloop.S: New file.
* testfilecfaloop.bz2: New file.
* testfilecfaloop.c: New file.
* testfilecfaloop.core.bz2: New file.
Signed-off-by: Jan Kratochvil <jan.kratochvil@redhat.com>
Diffstat (limited to 'tests/testfilecfaloop.c')
| -rw-r--r-- | tests/testfilecfaloop.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tests/testfilecfaloop.c b/tests/testfilecfaloop.c new file mode 100644 index 00000000..14a2fca8 --- /dev/null +++ b/tests/testfilecfaloop.c @@ -0,0 +1,22 @@ +/* Test program for run-cfaloop.sh. + Copyright (C) 2014 Red Hat, Inc. + This file is part of elfutils. + + This file 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. + + elfutils 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/>. */ + +// gcc -o testfilecfaloop.S testfilecfaloop.c -Wall -O2 -dA -fno-dwarf2-cfi-asm -nostdlib -S +void _start(void) { + volatile int *volatile p = 0; + *p = 0; +} |