[GTK3] Do not crash in SetData event #1612
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Test Results 483 files ±0 483 suites ±0 9m 13s ⏱️ +35s For more details on these failures, see this check. Results for commit 09cfb68. ± Comparison against base commit 266cc26. ♻️ This comment has been updated with latest results. |
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Test failures are caused by #1564 |
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GTK 3.24.41 (Ubuntu 24) crashes when renderers are replaced during render. If replacement is postponed, the crash no longer happens. Fixes eclipse-platform#678.
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+1 |
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Converting to draft until an alternative of renderer reconfiguration instead of recreation is investigated. |
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The alternative is quite complex in comparison and does not avoid the asyncExec(). |
| * Otherwise check-boxes will be rendered in columns they are not | ||
| * supposed to be rendered in. See bug 513761. | ||
| */ | ||
| boolean check = modelIndex == Tree.FIRST_COLUMN && (parent.style & SWT.CHECK) != 0; |
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Shouldn't check be computed inside getDisplay ().asyncExec (...) (similarly to modelIndexAsync and columnAsync)?.
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Yes, I've failed to account for column deletion. Thanks.
| if (parent.isDisposed () || Math.max (1, parent.getColumnCount ()) <= index) return; | ||
| // On multiple resize requests, perform only the last one | ||
| if (parent.pixbufHeight != iHeight || parent.pixbufWidth != iWidth) return; | ||
| int modelIndexAsync = parent.columnCount == 0 ? Tree.FIRST_COLUMN : parent.columns [index].modelIndex; |
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Is it possible that another column gets inserted at this index after this async task is scheduled but before it's actually executed?
If that's possible, then createRenderers(...) might not be executed for the original column.
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That's related to the bug with resizing you are trying to fix. parent.pixbufSizeSet is set only once per Tree, so the column index is not important 🤷 AFAIK, the only requirement for the column index - the column should exist.
And column may be deleted, so that's a concern worth investigating. Thanks.
The index can't be trusted here and might need to be clamped.
| } else { | ||
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| GTK.gtk_tree_store_set(parent.modelHandle, handle, modelIndex + Tree.CELL_PIXBUF, pixbuf, -1); | ||
| GTK.gtk_tree_store_set(parent.modelHandle, handle, modelIndex + Tree.CELL_SURFACE, surface, -1); |
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This is interesting.
So this line was missing before, which means that TreeItem._getImage(int) always returned null.
And somehow Tree still worked.
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It was not missing. I've moved it from below to manage try-finally scope.
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Hi @basilevs. |
The crash happens when renderers are replaced during render. If replacement is postponed, the crash no longer happens. The failure only happens in Ubuntu 24 (GTK 3.24.41).
Fixes #678.
Is tested by #1611.