contrib/fuzz/Makefile

worker: do not swallow exception occurred in main process

Before, SystemExit(255) would be most likely raised since the worker processes
were terminated by the main process and the status would be set to 255 in
response. We should instead re-raise the exception occurred first. It's pretty
hard to debug problems like the issue 6035 with no traceback.

CC = clang
CXX = clang++

all: bdiff mpatch xdiff

fuzzutil.o: fuzzutil.cc fuzzutil.h
	$(CXX) $(CXXFLAGS) -g -O1 -fsanitize=fuzzer-no-link,address \
	  -std=c++17 \
	  -I../../mercurial -c -o fuzzutil.o fuzzutil.cc

fuzzutil-oss-fuzz.o: fuzzutil.cc fuzzutil.h
	$(CXX) $(CXXFLAGS) -std=c++17 \
	  -I../../mercurial -c -o fuzzutil-oss-fuzz.o fuzzutil.cc

bdiff.o: ../../mercurial/bdiff.c
	$(CC) $(CFLAGS) -fsanitize=fuzzer-no-link,address -c -o bdiff.o \
	  ../../mercurial/bdiff.c

bdiff: bdiff.cc bdiff.o fuzzutil.o
	$(CXX) $(CXXFLAGS) -DHG_FUZZER_INCLUDE_MAIN=1 -g -O1 -fsanitize=fuzzer-no-link,address \
	  -std=c++17 \
	  -I../../mercurial bdiff.cc bdiff.o fuzzutil.o -o bdiff

bdiff-oss-fuzz.o: ../../mercurial/bdiff.c
	$(CC) $(CFLAGS) -c -o bdiff-oss-fuzz.o ../../mercurial/bdiff.c

bdiff_fuzzer: bdiff.cc bdiff-oss-fuzz.o fuzzutil-oss-fuzz.o
	$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial bdiff.cc \
	  bdiff-oss-fuzz.o fuzzutil-oss-fuzz.o -lFuzzingEngine -o \
	  $$OUT/bdiff_fuzzer

mpatch.o: ../../mercurial/mpatch.c
	$(CC) -g -O1 -fsanitize=fuzzer-no-link,address -c -o mpatch.o \
	  ../../mercurial/mpatch.c

mpatch: CXXFLAGS += -std=c++17
mpatch: mpatch.cc mpatch.o fuzzutil.o
	$(CXX) $(CXXFLAGS) -DHG_FUZZER_INCLUDE_MAIN=1 -g -O1 -fsanitize=fuzzer-no-link,address \
	  -I../../mercurial mpatch.cc mpatch.o fuzzutil.o -o mpatch

mpatch-oss-fuzz.o: ../../mercurial/mpatch.c
	$(CC) $(CFLAGS) -c -o mpatch-oss-fuzz.o ../../mercurial/mpatch.c

mpatch_fuzzer: mpatch.cc mpatch-oss-fuzz.o fuzzutil-oss-fuzz.o
	$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial mpatch.cc \
	  mpatch-oss-fuzz.o fuzzutil-oss-fuzz.o -lFuzzingEngine -o \
	  $$OUT/mpatch_fuzzer

mpatch_corpus.zip:
	python mpatch_corpus.py $$OUT/mpatch_fuzzer_seed_corpus.zip

x%.o: ../../mercurial/thirdparty/xdiff/x%.c ../../mercurial/thirdparty/xdiff/*.h
	$(CC) -g -O1 -fsanitize=fuzzer-no-link,address -c \
	  -o $@ \
	  $<

xdiff: CXXFLAGS += -std=c++17
xdiff: xdiff.cc xdiffi.o xprepare.o xutils.o fuzzutil.o
	$(CXX) $(CXXFLAGS) -DHG_FUZZER_INCLUDE_MAIN=1 -g -O1 -fsanitize=fuzzer-no-link,address \
	  -I../../mercurial xdiff.cc \
	  xdiffi.o xprepare.o xutils.o fuzzutil.o -o xdiff

fuzz-x%.o: ../../mercurial/thirdparty/xdiff/x%.c ../../mercurial/thirdparty/xdiff/*.h
	$(CC) $(CFLAGS) -c \
	  -o $@ \
	  $<

xdiff_fuzzer: xdiff.cc fuzz-xdiffi.o fuzz-xprepare.o fuzz-xutils.o fuzzutil-oss-fuzz.o
	$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial xdiff.cc \
	  fuzz-xdiffi.o fuzz-xprepare.o fuzz-xutils.o fuzzutil-oss-fuzz.o \
	  -lFuzzingEngine -o $$OUT/xdiff_fuzzer

# TODO use the $OUT env var instead of hardcoding /out
/out/sanpy/bin/python:
	cd /Python-2.7.15/ && ./configure --without-pymalloc --prefix=$$OUT/sanpy CFLAGS='-O1 -fno-omit-frame-pointer -g -fwrapv -fstack-protector-strong' LDFLAGS=-lasan  && ASAN_OPTIONS=detect_leaks=0 make && make install

sanpy: /out/sanpy/bin/python

manifest.o: sanpy ../../mercurial/cext/manifest.c
	$(CC) $(CFLAGS) `$$OUT/sanpy/bin/python-config --cflags` \
	  -I../../mercurial \
	  -c -o manifest.o ../../mercurial/cext/manifest.c

charencode.o: sanpy ../../mercurial/cext/charencode.c
	$(CC) $(CFLAGS) `$$OUT/sanpy/bin/python-config --cflags` \
	  -I../../mercurial \
	  -c -o charencode.o ../../mercurial/cext/charencode.c

parsers.o: sanpy ../../mercurial/cext/parsers.c
	$(CC) $(CFLAGS) `$$OUT/sanpy/bin/python-config --cflags` \
	  -I../../mercurial \
	  -c -o parsers.o ../../mercurial/cext/parsers.c

dirs.o: sanpy ../../mercurial/cext/dirs.c
	$(CC) $(CFLAGS) `$$OUT/sanpy/bin/python-config --cflags` \
	  -I../../mercurial \
	  -c -o dirs.o ../../mercurial/cext/dirs.c

pathencode.o: sanpy ../../mercurial/cext/pathencode.c
	$(CC) $(CFLAGS) `$$OUT/sanpy/bin/python-config --cflags` \
	  -I../../mercurial \
	  -c -o pathencode.o ../../mercurial/cext/pathencode.c

revlog.o: sanpy ../../mercurial/cext/revlog.c
	$(CC) $(CFLAGS) `$$OUT/sanpy/bin/python-config --cflags` \
	  -I../../mercurial \
	  -c -o revlog.o ../../mercurial/cext/revlog.c

manifest_fuzzer: sanpy manifest.cc manifest.o charencode.o parsers.o dirs.o pathencode.o revlog.o
	$(CXX) $(CXXFLAGS) `$$OUT/sanpy/bin/python-config --cflags` \
	  -Wno-register -Wno-macro-redefined \
	  -I../../mercurial manifest.cc \
	  manifest.o charencode.o parsers.o dirs.o pathencode.o revlog.o \
	  -lFuzzingEngine `$$OUT/sanpy/bin/python-config --ldflags` \
	  -o $$OUT/manifest_fuzzer

manifest_corpus.zip:
	python manifest_corpus.py $$OUT/manifest_fuzzer_seed_corpus.zip

clean:
	$(RM) *.o *_fuzzer \
	  bdiff \
	  mpatch \
	  xdiff

oss-fuzz: bdiff_fuzzer mpatch_fuzzer mpatch_corpus.zip xdiff_fuzzer manifest_fuzzer manifest_corpus.zip

.PHONY: all clean oss-fuzz sanpy