RagTime crash caused by macOS 10.12 (Sierra) bug

With the release of macOS 10.12.2 this warning is obsolete!


We have been receiving crash reports by macOS 10.12 users who experience continued RagTime crashes.


The crash report always shows the following output:


Thread 0 Crashed:: Dispatch queue: com.apple.main-thread

0   com.apple.CoreGraphics  x_malloc + 28

1   com.apple.CoreGraphics  shape_accum_shape + 361

2   com.apple.CoreGraphics  dl_shape_get_shape + 96

3   com.apple.CoreGraphics  CGDisplayListDrawInContextDelegate + 42

4   com.apple.CoreGraphics  build_tile + 4553

5   com.apple.CoreGraphics  create_pattern_tile_pattern + 480

6   com.apple.CoreGraphics  ripc_GetColor + 4813

7   com.apple.CoreGraphics  ripc_Render + 370

8   com.apple.CoreGraphics  ripc_DrawPath + 317

9   com.apple.CoreGraphics  CGContextDrawPath + 184

10  com.apple.CoreGraphics  CGContextStrokePath + 19

11  de.ragtime.base         Vision::Mac::XQuartzFocus::DrawShape(TShapeData*, TInkData*, TStyleData*, CGAffineTransform const*) + 1127 (QuartzFocus.cpp:7221)

12  de.ragtime.base         Vision::Mac::XQuartzFocus::Draw(TShapeData*) + 212 (QuartzFocus.cpp:2251)


This crash occurs with documents in which a pattern is used for fillings or linings, e.g.:

Drawing a pattern repeatedly consumes memory that is not released anymore. This happens until RagTime crashes.


Our investigations show that the OS is responsible for the crash, RagTime is not responsible. It is a bug which occurs under macOS 10.12.0 and 10.12.1. It does not occur in previous macOS versions.


Until then, the usage of patterns should be avoided. If such documents need to be used nonetheless, RagTime should regularly be quit and restarted, to prevent crashes.




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