oven-sh/bun · error

Usage: %s <file>

Error message

Usage: %s <file>

What it means

Error "Usage: %s <file> " thrown in oven-sh/bun.

Source

Thrown at misctools/cold-jsc-start.cpp:65

  if (auto *buffer = jsDynamicCast<JSC::JSArrayBufferView *>(toWriteArg)) {
    auto *data = buffer->vector();
    auto length = buffer->byteLength();
    auto written = write(fd, data, length);
    return JSValue::encode(jsNumber(written));
  }

  auto string = toWriteArg.toWTFString(globalObject);
  RETURN_IF_EXCEPTION(scope, {});
  auto utf8 = string.utf8();
  auto length = utf8.length();
  auto written = write(fd, utf8.data(), length);
  return JSValue::encode(jsNumber(written));
}

int main(int argc, char **argv) {
  if (argc < 2) {
    fprintf(stderr, "Usage: %s <file>\n", argv[0]);
    return 1;
  }
#ifdef VERBOSE
  auto stopwatch = Stopwatch::create();
  stopwatch->start();
#endif

  {
    WTF::initializeMainThread();
    JSC::initialize();
    {
      JSC::Options::AllowUnfinalizedAccessScope scope;

      JSC::Options::useConcurrentJIT() = true;
      // JSC::Options::useSigillCrashAnalyzer() = true;
      JSC::Options::useWebAssembly() = true;
      JSC::Options::useSourceProviderCache() = true;
      // JSC::Options::useUnlinkedCodeBlockJettisoning() = false;

View on GitHub (pinned to 8c5296ac45)

When it happens

Trigger: Thrown at misctools/cold-jsc-start.cpp:65 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of oven-sh/bun@8c5296ac45 (2026-08-16). Data as JSON: /api/errors/b26cb695013cf045. Report an issue: GitHub.