Regression: sys.exit(0) sets span error to SystemExit

[grihabor]

Describe your environment

OS: (e.g, Ubuntu)
Python version: (e.g., Python 3.13.2)
SDK version: (e.g., 1.31.0)
API version: (e.g., 1.31.0)

What happened?

After upgrade from 1.30.0 to 1.31.0 this code started producing a span with SystemExit error:

with tracer.start_as_current_span("test-exit-code"):
    sys.exit(0)

Related to #4406

Steps to Reproduce

def main():
    resource = Resource(attributes={SERVICE_NAME: "test-exit-code"})
    tracerProvider = TracerProvider(resource=resource)
    stream = StringIO()
    processor = BatchSpanProcessor(ConsoleSpanExporter(out=stream))
    tracerProvider.add_span_processor(processor)
    trace.set_tracer_provider(tracerProvider)
    tracer = trace.get_tracer(__name__)
    try:
        with tracer.start_as_current_span("test-exit-code"):
            sys.exit(0)
    except SystemExit:
        pass

    while stream.getvalue() == "":
        time.sleep(0.5)

    span = json.loads(stream.getvalue())
    print(span)

Expected Result

  {
      "name": "test-exit-code",
      "context": {
          "trace_id": "0x644b4d5832f13a490133e4b44d72a476",
          "span_id": "0x34b0785025ce90ab",
          "trace_state": "[]"
      },
      "kind": "SpanKind.INTERNAL",
      "parent_id": null,
      "start_time": "2025-03-18T13:02:28.415717Z",
      "end_time": "2025-03-18T13:02:28.415733Z",
      "status": {
          "status_code": "UNSET"
      },
      "attributes": {},
      "events": [],
      "links": [],
      "resource": {
          "attributes": {
              "service.name": "test-exit-code"
          },
          "schema_url": ""
      }
  }

Actual Result

  {
      "name": "test-exit-code",
      "context": {
          "trace_id": "0xaa4145b80399a253002020b3afc45226",
          "span_id": "0xe492dbcd05893ead",
          "trace_state": "[]"
      },
      "kind": "SpanKind.INTERNAL",
      "parent_id": null,
      "start_time": "2025-03-18T13:03:48.253080Z",
      "end_time": "2025-03-18T13:03:48.254344Z",
      "status": {
          "status_code": "ERROR",
          "description": "SystemExit: 0"
      },
      "attributes": {},
      "events": [
          {
              "name": "exception",
              "timestamp": "2025-03-18T13:03:48.254331Z",
              "attributes": {
                  "exception.type": "SystemExit",
                  "exception.message": "0",
                  "exception.stacktrace": "Traceback (most recent call last):\n  File \"/home/grihabor/.cache/pants/named_caches/pex_root/venvs/1/s/7156ea6e/venv/lib/python3.11/site-packages/opentelemetry/ace/__init__.py\", line 587, in use_span\n    yield span\n  File \"/home/grihabor/.cache/pants/named_caches/pex_root/venvs/1/s/7156ea6e/venv/lib/python3.11/site-packages/opentelemetry/sdk/trace/__init__.\", line 1105, in start_as_current_span\n    yield span\n  File \"src/python/observability/otel/exit_test.py\", line 21, in test_exit_code\n    sys.exit(0)\nSystemExit: 0\n",
                  "exception.escaped": "False"
              }
          }
      ],
      "links": [],
      "resource": {
          "attributes": {
              "service.name": "test-exit-code"
          },
          "schema_url": ""
      }
  }

Additional context

No response

Would you like to implement a fix?

None