Ubuntu bionic clang is clang version 6, which does not come with libfuzzer. So the ci system breaks down when run on aarch64.
Fix that by using clang-8
For reference, the previous error on my ci system was:
/usr/bin/ld: cannot find /usr/lib/llvm-6.0/lib/clang/6.0.0/lib/linux/libclang_rt.fuzzer-aarch64.a: No such file or directory
Excerpt from my ci system:
Options used to compile and link:
with wallet = no
with gui / qt = no
with zmq = no
with test = yes
with prop = no
with fuzz = yes
with bench = no
with upnp = no
use asm = yes
sanitizers = fuzzer,address,undefined
debug enabled = no
gprof enabled = no
werror = no
target os = linux
build os =
CC = /usr/bin/ccache clang-8
CFLAGS = -g -O2
CPPFLAGS = -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Qunused-arguments -DHAVE_BUILD_INFO -D__STDC_FORMAT_MACROS
CXX = /usr/bin/ccache clang++-8 -std=c++11
CXXFLAGS = -Wstack-protector -fstack-protector-all -Wall -Wextra -Wformat -Wvla -Wswitch -Wformat-security -Wthread-safety-analysis -Wrange-loop-analysis -Wredundant-decls -Wno-unused-parameter -Wno-self-assign -Wno-unused-local-typedef -Wno-deprecated-register -Wno-implicit-fallthrough -g -O2
LDFLAGS = -pthread -Wl,-z,relro -Wl,-z,now -pie
ARFLAGS = cr
travis_fold:end:configure
travis_fold:start:build
Making install in src
make[1]: Entering directory '/root/workspace/bitcoin-core/build/bitcoin-aarch64-unknown-linux-gnu/src'
make[2]: Entering directory '/root/workspace/bitcoin-core/build/bitcoin-aarch64-unknown-linux-gnu/src'
CXX test/fuzz/test_fuzz_address_deserialize-fuzz.o
CXX test/util/test_fuzz_address_deserialize-setup_common.o
ACK fa6e01b2f3cd8523a95bd1906ac5e62ee3cbf319 -- diff looks correct
ACK fa6e01b2f3cd8523a95bd1906ac5e62ee3cbf319
Bumped the timeout in a new commit, because it turns out that just running over the existing seeds takes 5 minutes for me:
root@odroid:~/workspace/bitcoin-core/build/bitcoin-aarch64-unknown-linux-gnu# time ./test/fuzz/test_runner.py ../../qa-assets/fuzz_seed_corpus/
Fuzz targets found: ['address_deserialize', 'addrman_deserialize', 'banentry_deserialize', 'bech32', 'block_deserialize', 'blockheader_deserialize', 'blocklocator_deserialize', 'blockmerkleroot', 'blocktransactions_deserialize', 'blocktransactionsrequest_deserialize', 'blockundo_deserialize', 'bloomfilter_deserialize', 'coins_deserialize', 'descriptor_parse', 'diskblockindex_deserialize', 'eval_script', 'inv_deserialize', 'messageheader_deserialize', 'netaddr_deserialize', 'parse_iso8601', 'script', 'script_flags', 'service_deserialize', 'spanparsing', 'transaction', 'txoutcompressor_deserialize', 'txundo_deserialize']
Fuzz targets selected: ['blocktransactions_deserialize', 'bloomfilter_deserialize', 'parse_iso8601', 'txoutcompressor_deserialize', 'blocklocator_deserialize', 'diskblockindex_deserialize', 'service_deserialize', 'banentry_deserialize', 'address_deserialize', 'inv_deserialize', 'script_flags', 'coins_deserialize', 'descriptor_parse', 'blockheader_deserialize', 'block_deserialize', 'addrman_deserialize', 'messageheader_deserialize', 'blocktransactionsrequest_deserialize', 'txundo_deserialize', 'blockmerkleroot', 'eval_script', 'bech32', 'blockundo_deserialize', 'script', 'netaddr_deserialize', 'spanparsing', 'transaction']
real 5m5.762s
user 4m9.200s
sys 0m8.390s
ACK fa2ec9f4518c1da3ab3592537c6cd204693a6069