diff options
Diffstat (limited to 'src/drawing/backend_impl/mocked.rs')
| -rw-r--r-- | src/drawing/backend_impl/mocked.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/drawing/backend_impl/mocked.rs b/src/drawing/backend_impl/mocked.rs index da6bfec..7569e73 100644 --- a/src/drawing/backend_impl/mocked.rs +++ b/src/drawing/backend_impl/mocked.rs @@ -269,6 +269,13 @@ impl DrawingBackend for MockedBackend { impl Drop for MockedBackend { fn drop(&mut self) { + // `self.drop_check` is typically a testing function; it can panic. + // The current `drop` call may be a part of stack unwinding caused + // by another panic. If so, we should never call it. + if std::thread::panicking() { + return; + } + let mut temp = None; std::mem::swap(&mut temp, &mut self.drop_check); |