1.. title:: clang-tidy - bugprone-no-escape 2 3bugprone-no-escape 4================== 5 6Finds pointers with the ``noescape`` attribute that are captured by an 7asynchronously-executed block. The block arguments in ``dispatch_async()`` and 8``dispatch_after()`` are guaranteed to escape, so it is an error if a pointer with the 9``noescape`` attribute is captured by one of these blocks. 10 11The following is an example of an invalid use of the ``noescape`` attribute. 12 13 .. code-block:: objc 14 15 void foo(__attribute__((noescape)) int *p) { 16 dispatch_async(queue, ^{ 17 *p = 123; 18 }); 19 }); 20