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Make it possible to check that an implementation is supported at runtime (#1197)

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* Make it possible to check that an implementation is supported at runtime.

* add CI fuzzing on arm 64 bit

This adds fuzzing on drone.io arm64

For some reason, leak detection had to be disabled. If it is enabled, the fuzzer falsely reports a crash at the end of fuzzing.

Closes: #1188

* Guarding the implementation accesses.

* Better doc.

* Updating cxxopts.

* Make it possible to check that an implementation is supported at runtime.

* Guarding the implementation accesses.

* Better doc.

* Updating cxxopts.

* We need to accomodate cxxopts

Co-authored-by: Paul Dreik <github@pauldreik.se>
This commit is contained in:
Daniel Lemire
2020-10-02 11:04:51 -04:00
committed by GitHub
parent e06ddea784
commit 9865bb6904
19 changed files with 159 additions and 25 deletions
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fuzz/fuzz_minifyimpl.cpp
+10 -6
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@@ -32,16 +32,19 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
};
auto first=simdjson::available_implementations.begin();
auto last=simdjson::available_implementations.end();
auto const first = simdjson::available_implementations.begin();
auto const last = simdjson::available_implementations.end();
//make sure there is an implementation
assert(first!=last);
auto it = first;
while((it != last) && (!(*it)->supported_by_runtime_system())) { it++; }
assert(it != last);
const auto reference=minify(*first);
bool failed=false;
for(auto it=first+1;it!=last; ++it) {
for(;it != last; ++it) {
if(!(*it)->supported_by_runtime_system()) { continue; }
const auto current=minify(*it);
if(current!=reference) {
failed=true;
@@ -50,7 +53,8 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
if(failed) {
std::cerr<<std::boolalpha<<"Mismatch between implementations of minify() found:\n";
for(auto it=first;it!=last; ++it) {
for(it = first;it != last; ++it) {
if(!(*it)->supported_by_runtime_system()) { continue; }
const auto current=minify(*it);
std::string tmp(current.begin(),current.end());
std::cerr<<(*it)->name()<<" returns "<<tmp<<std::endl;