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Details

Type: Bug
Resolution: Done
Priority: P1: Critical
Fix Version/s: 6.1.3, 6.2.0 Beta3, 6.2, 6.3.0 Alpha
Affects Version/s: 5.15.4, 5.15.5, 6.2
Component/s: QML: Declarative and Javascript Engine
Labels:
- qmlnext

Platform/s:

All
Commits:
d36b480a956e2437888925aa8a1f5e3cb6c06ebd (qt/qtdeclarative/dev) d082d8ff76080c8e5aa74414c253014bcf7e79c9 (qt/qtdeclarative/6.1) 30f504232502c15e3d3536945ed5d9bd5a8f6dd3 (qt/qtdeclarative/6.2) cf48a9ef97 (qt/tqtc-qtdeclarative/5.15-opensource)

Description

This test is a small reproducer of a crash we had in production after bumping to the latest Qt version, it passes without issue in 5.15.3, but starting with 5.15.4 it always crashes:

    function test_generator_gc() {
        ((function*() { gc() })()).next();
        ((function*() { gc() })()).next();
        ((function*() { gc() })()).next();
        ((function*() { gc() })()).next();
        ((function*() { gc() })()).next();
    }

I think the regression was introduced by ~~QTBUG-91491~~: qv4generatorobject: Fix crash when creating new properties (but I haven't tested).