16 Commits

Author SHA1 Message Date
Paul Robinson
8a86860207 [fuzzer] Convert tests to check 'target=...'
Part of the project to eliminate special handling for triples in lit
expressions.
2022-12-16 11:41:53 -08:00
Ulrich Weigand
f018a5f6e0 [compiler-rt][SystemZ] Skip fuzzer/coverage.test
This test is currently marked as XFAIL on s390x, but it is randomly
passing, causing build bot issues.  Setting as UNSUPPORTED for now.
2022-04-11 16:18:09 +02:00
Nico Weber
97c675d3d4 Revert "Revert "Temporarily do not drop volatile stores before unreachable""
This reverts commit 52aeacfbf5ce5f949efe0eae029e56db171ea1f7.
There isn't full agreement on a path forward yet, but there is agreement that
this shouldn't land as-is.  See discussion on https://reviews.llvm.org/D105338

Also reverts unreviewed "[clang] Improve `-Wnull-dereference` diag to be more in-line with reality"
This reverts commit f4877c78c0fc98be47b926439bbfe33d5e1d1b6d.

And all the related changes to tests:
This reverts commit 9a0152799f8e4a59e0483728c9f11c8a7805616f.
This reverts commit 3f7c9cc27422f7302cf5a683eeb3978e6cb84270.
This reverts commit 329f8197ef59f9bd23328b52d623ba768b51dbb2.
This reverts commit aa9f58cc2c48ca6cfc853a2467cd775dc7622746.
This reverts commit 2df37d5ddd38091aafbb7d338660e58836f4ac80.
This reverts commit a72a44181264fd83e05be958c2712cbd4560aba7.
2021-07-09 11:44:34 -04:00
Roman Lebedev
9a0152799f
[compiler-rt] fuzzer: adjust tests to not expect that store to null traps and is not erase
Instead, mostly just trap directly.
2021-07-09 15:03:11 +03:00
Ilya Leoshkevich
ea9b82da41 [libFuzzer] Enable for SystemZ
* Add SystemZ to the list of supported architectures.

* XFAIL a few tests.

Coverage reporting is broken, and is not easy to fix (see comment in
coverage.test). Interaction with sanitizers needs to be investigated
more thoroughly, since they appear to reduce coverage in certain cases.
2020-08-04 21:53:27 +02:00
Julian Lettner
ee82db57ec [libFuzzer] Make coverage.test work on ARM64
Summary:
This test instruments the following code with coverage, runs the fuzzer
once, and asserts that there are uncovered PCs. The ARM64 backend
optimizes this code using the `csel` (Conditional select) instruction,
which removes all branching from the resulting machine code. The test
then fails because we do not have any uncovered PCs. The easiest
solution for now is to turn off optimization for the DSOs used in this
test.

```
int DSO1(int a) {
  if (a < 123456)
    return 0;
  return 1;
}
```

rdar://47646400

Reviewers: kcc

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D58087

llvm-svn: 353780
2019-02-12 00:37:40 +00:00
Kostya Serebryany
bb01a098b1 [libFuzzer] print uncovered functions when doing -print_coverage=1
llvm-svn: 352263
2019-01-26 01:33:09 +00:00
Vitaly Buka
d733430c19 [fuzzer] Fix test checks broken after license header update
llvm-svn: 351717
2019-01-21 02:22:06 +00:00
George Karpenkov
f28523bb3f [libFuzzer] Generalize the code for getting the previous offset for different architectures
Without this change, tests in coverage.test and dump_coverage.test are
failing on non-x86_64 platforms.
The diff is copied from sanitizer_common library, an alternative would
be to link it together with libFuzzer.

Differential Revision: https://reviews.llvm.org/D53040

llvm-svn: 344104
2018-10-10 00:57:44 +00:00
Matt Morehouse
24568789c4 [libFuzzer] Enable tests on Windows
Summary:
Enable tests on Windows and make check-fuzzer pass on it.  Make
check-fuzzer pass on Windows by fixing libFuzzer, fixing tests, and by
disabling tests on Windows. Most of these are disabled temporarily as
support for the tests and the features they test will be added
incrementally.  Other tests will not be enabled since they require
things that are not on Windows (eg: afl_driver tests).  Every test
that was explicitly disabled on Windows has a comment explaining why
(unless obvious like merge-posix.test).

The lit.cfg file was modified to support running tests on windows.
fuzzer-dirs.test was fixed by making the Windows implementation print
the same error message as the posix version.
merge-control-file.test was fixed by making the test binary end with
the ".exe" extension (on all platforms).

Patch By: metzman

Reviewers: morehouse

Reviewed By: morehouse

Subscribers: srhines, mgorny

Differential Revision: https://reviews.llvm.org/D51549

llvm-svn: 341385
2018-09-04 17:08:47 +00:00
Kostya Serebryany
44edc281d9 [libFuzzer] when -print_coverage=1 is given, print more stats (the number of seeds that hit every given function)
llvm-svn: 337501
2018-07-19 22:00:48 +00:00
Matt Morehouse
0ab788e271 [libFuzzer] Mark several tests UNSUPPORTED for aarch64.
Now that check-fuzzer runs as part of check-all, some aarch64 bots had
tests failing.

llvm-svn: 335639
2018-06-26 18:37:09 +00:00
George Karpenkov
d7e1a9488b [libFuzzer] [NFC] Remaining minor fixes to support testing on devices.
XFAIL's and adding %run commands.

llvm-svn: 334774
2018-06-14 22:13:36 +00:00
George Karpenkov
fa57519e31 [libFuzzer] [NFC] Prefix all run lines with %run
This patch does not do anything, but paves the way for future changes,
where %run command will be expanded into a script performing the testing
on device.

Differential Revision: https://reviews.llvm.org/D46553

llvm-svn: 332144
2018-05-11 21:29:51 +00:00
Kostya Serebryany
6a6e690d24 [libFuzzer] refactor the implementation of -print_coverage
llvm-svn: 332073
2018-05-11 01:17:52 +00:00
George Karpenkov
10ab2ace13 Move libFuzzer to compiler_rt.
Resulting library binaries will be named libclang_rt.fuzzer*, and will
be placed in Clang toolchain, allowing redistribution.

Differential Revision: https://reviews.llvm.org/D36908

llvm-svn: 311407
2017-08-21 23:25:50 +00:00