// here.
			} else if portRemoved(feature) {
				// okay.
			} else if featureSet[featureWithoutContext(feature)] {
				// okay.
			} else {
				fmt.Fprintf(w, "-%s\n", feature)
				ok = false // broke compatibility
			}
		case len(required) == 0 || (len(features) > 0 && required[0] > features[0]):
			newFeature := take(&features)
			fmt.Fprintf(w, "+%s\n", newFeature)
			ok = false // feature not in api/next/*

If code depends on buggy (including insecure) behavior,
then fixing the bug will break that code.
New features can also have similar impacts:
enabling the HTTP/2 use by the HTTP client broke programs
connecting to servers with buggy HTTP/2 implementations.
These kinds of changes are unavoidable and
[permitted by the Go 1 compatibility rules](/doc/go1compat).
Even so, Go provides a mechanism called GODEBUG to

    (by catching the `IllegalStateException` if they weren't available). This new API restores that
    capability.

 *  Fix: Don't crash on `trailers()` if the response doesn't have a body. We broke [Retrofit] users
    who read the trailers on the `raw()` OkHttp response, after its body was decoded.


## Version 5.0.0

_2025-07-02_

    assertThat(response.body.string()).isEqualTo("body")
  }

  /**
   * Old implementations of OkHttp's response cache wrote header fields like ":status: 200 OK". This
   * broke our cached response parser because it split on the first colon. This regression test
   * exists to help us read these old bad cache entries.
   *
   * https://github.com/square/okhttp/issues/227
   */
  @Test

          response: Response,
        ) {
          call.cancel()
          try {
            bodyRef.set(response.body.string())
          } catch (e: IOException) {
            // It is ok if this broke the stream.
            bodyRef.set("A")
            throw e // We expect to not loop into onFailure in this case.
          } finally {
            latch.countDown()
          }
        }
      },

def broken_dep() -> Any:
    yield "s"
    raise ValueError("Broken after yield")


app = FastAPI()


@app.get("/catching")
def catching(d: Annotated[str, Depends(catching_dep)]) -> Any:
    raise CustomError("Simulated error during streaming")


@app.get("/broken")
def broken(d: Annotated[str, Depends(broken_dep)]) -> Any:
    return {"message": "all good?"}

    def iter_data():
        yield from session

    return StreamingResponse(iter_data())


@app.get("/broken-session-data")
def get_broken_session_data(session: BrokenSessionDep) -> Any:
    return list(session)


@app.get("/broken-session-stream")
def get_broken_session_stream(session: BrokenSessionDep) -> Any:
    def iter_data():
        yield from session

/// info | Bilgi

Yukarıdaki örnek aslında bir istisna; çünkü `io.BytesIO` nesnesi zaten bellekte, dolayısıyla onu okumak hiçbir şeyi bloke etmez.

Ancak çoğu durumda bir dosyayı veya dosya benzeri bir nesneyi okumak bloke edicidir.

///

@app.websocket("/ws")
async def websocket_endpoint(websocket: WebSocket, session: SessionDep):
    await websocket.accept()
    for item in session:
        await websocket.send_text(f"{item}")


@app.websocket("/ws-broken")
async def websocket_endpoint_broken(websocket: WebSocket, session: BrokenSessionDep):
    await websocket.accept()
    for item in session:
        await websocket.send_text(f"{item}")  # pragma no cover

  }

  /**
   * Returns a {@code Collector} that returns the {@code k} smallest (relative to the specified
   * {@code Comparator}) input elements, in ascending order, as an unmodifiable {@code List}. Ties
   * are broken arbitrarily.
   *
   * <p>For example:
   *
   * {@snippet :
   * Stream.of("foo", "quux", "banana", "elephant").collect(least(2, comparingInt(String::length)))
   * // returns {"foo", "quux"}
   * }
   *