#require test-repo py3

  $ cd $TESTDIR/../contrib/fuzz

  $ OUT=$TESTTMP ; export OUT

which(1) could exit nonzero, but that's fine because we'll still end

up without a valid executable, so we don't need to check $? here.

  $ if which gmake >/dev/null 2>&1; then

  >     MAKE=gmake

  > else

  >     MAKE=make

  > fi

  $ havefuzz() {

  >     cat > $TESTTMP/dummy.cc <<EOF

  > #include <stdlib.h>

  > #include <stdint.h>

  > int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { return 0; }

  > int main(int argc, char **argv) {

  >     const char data[] = "asdf";

  >     return LLVMFuzzerTestOneInput((const uint8_t *)data, 4);

  > }

  > EOF

  >     $CXX $TESTTMP/dummy.cc -o $TESTTMP/dummy \

  >        -fsanitize=fuzzer-no-link,address || return 1

  > }

Try to find a python3-config that's next to our sys.executable. If

that doesn't work, fall back to looking for a global python3-config

and hope that works out for the best.

  $ PYBIN=`"$PYTHON" -c 'import sys, os; print(os.path.dirname(sys.executable))'`

  $ if [ -x "$PYBIN/python3-config" ] ; then

  >   PYTHON_CONFIG="$PYBIN/python3-config"

  > else

  >   PYTHON_CONFIG="`which python3-config`"

  > fi

#if clang-libfuzzer

  $ CXX=clang++ havefuzz || exit 80

  $ $MAKE -s clean all PYTHON_CONFIG="$PYTHON_CONFIG"

#endif

#if no-clang-libfuzzer clang-6.0

  $ CXX=clang++-6.0 havefuzz || exit 80

  $ $MAKE -s clean all CC=clang-6.0 CXX=clang++-6.0 PYTHON_CONFIG="$PYTHON_CONFIG"

#endif

#if no-clang-libfuzzer no-clang-6.0

  $ exit 80

#endif

  $ cd $TESTTMP

Run each fuzzer using dummy.cc as a fake input, to make sure it runs

at all. In the future we should instead unpack the corpus for each

fuzzer and use that instead.

  $ for fuzzer in `ls *_fuzzer | sort` ; do

  >   echo run $fuzzer...

  >   ./$fuzzer dummy.cc > /dev/null 2>&1 

  > done

  run bdiff_fuzzer...

  run dirs_fuzzer...

  run dirstate_fuzzer...

  run fm1readmarkers_fuzzer...

  run fncache_fuzzer...

  run jsonescapeu8fast_fuzzer...

  run manifest_fuzzer...

  run mpatch_fuzzer...

  run revlog_fuzzer...

  run xdiff_fuzzer...

Clean up.

  $ cd $TESTDIR/../contrib/fuzz

  $ $MAKE -s clean