* [infra] Add support for dataflow builds to the helper script and build check (#1632).
* Update travis config file.
* Address self-review comments and specify dataflow sanitizer for zstd as well.
* Fix fuzzing_engines in project.yaml
* Fix bad build check for DFSan.
* Use "hasattr" in helper.py to check the sanitizer argument.
* Address more review comments.
* Remove DataFlow config from zstd.
* fix a typo
When a fuzzer is seriously broken (which happens occasionally during debug),
it's unlikely to start properly let alone provide some meaningful
output. In this case, it seems reasonable to skip some checks and prevent bash
from encountering the following syntax error:
```
/usr/local/bin/bad_build_check: line 68: ((: < 100 : syntax error: operand expected (error token is "< 100 ")
```
* Add AFL bad build checks (instrumentation, startup crash).
* Fix incorrect seed corpus unpack for afl bad instrumentation, startup crash test
* Match AFL startup crash check with ClusterFuzz
* [infra] Enable bad build checks once again.
* Minor typo.
* [bad_example] Update build flags for reproducing bad instrumentation scenario.
* [bad_example] split bad/no instrumentation case into two different ones.
* Use new approach for partial instrumentation detection + do that only for libFuzzer.
* Rename bad_example_bad_instrumentation into bad_example_partial_instrumentation.
* Calculate number of broken targets and fail if 10+% are broken.
* Multiprocess madness.
* Always run all checks and store all errors + clean up the code and add comments
* Add special handling for the projects with very small fuzz targets.
* Remove unnecessary semicolon.
* Address review comments.
* Address more review comments, small refactoring.
* [WIP] Add post build checks for catching and reporting bad builds + test projects.
* Move all type of issues into a single project. Tested all sanitizers.
* First version of the script for performing bad build checks. Still not ready to commit.\
* Added a valid example that should pass all the checks + fixed instrumentation check.
* Use SIGTERM and the handler calling _exit(0) for the startup crash case.
* Small fixes.
* Ignore startup_crash check_for fuzzing engines other than libFuzzer.
* Use "local" for local variables in the script, fix container name.
* Add COPY step for bad_build_check into base-runner Dockerfile.
* Make bad_build_check temporary noop unless EXPERIMENTAL_BAD_BUILD_CHECK is set to 1.
* Temporary remove test binaries step.
* Remove empty line.
* Remove unnecessary env variable.
jonathanmetzman