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Merge bitcoin/bitcoin#28460: fuzz: Use afl++ shared-memory fuzzing

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97e2e1d641016cd7b74848b9560e3771f092c1ea [fuzz] Use afl++ shared-memory fuzzing (dergoegge)

Pull request description:

  Using shared-memory is faster than reading from stdin, see 7d2122e059/instrumentation/README.persistent_mode.md

ACKs for top commit:
  MarcoFalke:
    review ACK 97e2e1d641016cd7b74848b9560e3771f092c1ea

Tree-SHA512: 7e71b5f84835e41531c19ee959be2426da245869757de8e5dd1c730ae83ead650e2ef75f4d594d7965f661821a4ffbd27be84d3ce623702991501b34a8d02fc3
This commit is contained in:
fanquake 2023-09-14 13:52:12 +01:00 committed by pasta
parent 52f036b316
commit 2b236ad07b
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GPG Key ID: E2F3D7916E722D38
1 changed files with 8 additions and 6 deletions
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14
src/test/fuzz/fuzz.cpp
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@ -22,6 +22,10 @@
#include <unistd.h>
#include <vector>
#ifdef __AFL_FUZZ_INIT
__AFL_FUZZ_INIT();
#endif
const std::function<void(const std::string&)> G_TEST_LOG_FUN{};
/**
@ -166,7 +170,7 @@ int main(int argc, char** argv)
{
initialize();
static const auto& test_one_input = *Assert(g_test_one_input);
#ifdef __AFL_INIT
#ifdef __AFL_HAVE_MANUAL_CONTROL
// Enable AFL deferred forkserver mode. Requires compilation using
// afl-clang-fast++. See fuzzing.md for details.
__AFL_INIT();
@ -175,12 +179,10 @@ int main(int argc, char** argv)
#ifdef __AFL_LOOP
// Enable AFL persistent mode. Requires compilation using afl-clang-fast++.
// See fuzzing.md for details.
const uint8_t* buffer = __AFL_FUZZ_TESTCASE_BUF;
while (__AFL_LOOP(1000)) {
std::vector<uint8_t> buffer;
if (!read_stdin(buffer)) {
continue;
}
test_one_input(buffer);
size_t buffer_len = __AFL_FUZZ_TESTCASE_LEN;
test_one_input({buffer, buffer_len});
}
#else
std::vector<uint8_t> buffer;