Commit Graph

11 Commits

Author SHA1 Message Date
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