Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-107594

Crash when rendering emojis with NotoEmoji font

    XMLWordPrintable

Details

    • All
    • 3a7eb23c2a (qt/qtdeclarative/dev) 0b0ee235f9 (qt/qtdeclarative/6.4) 0b0ee235f9 (qt/tqtc-qtdeclarative/6.4) 3a7eb23c2a (qt/tqtc-qtdeclarative/dev) 0b0ee235f9 (qt/tqtc-qtdeclarative/tqtc/qtinsight-6.4)

    Description

      Build & Run the attached example ( Deletable87g28712.zip ) in Qt Creator for Qt WebAssembly, 6.4.0 or for macOS. It produces a crash : 
      For WebAssembly the call stack looks like this : 

      Uncaught RuntimeError: memory access out of bounds
    at QHash<unsigned int, QSGDistanceFieldGlyphCache::GlyphData>::find(unsigned int const&) (Deletable87g28712.wasm:0x21a457)
    at QSGDistanceFieldGlyphCache::glyphData(unsigned int) (Deletable87g28712.wasm:0x21a12b)
    at QSGDistanceFieldGlyphNode::updateGeometry() (Deletable87g28712.wasm:0x28581c)
    at QSGDistanceFieldGlyphNode::preprocess() (Deletable87g28712.wasm:0x28556b)
    at QSGRenderer::preprocess() (Deletable87g28712.wasm:0x223c32)
    at QSGRenderer::renderScene() (Deletable87g28712.wasm:0x223173)
    at QSGDefaultRenderContext::renderNextFrame(QSGRenderer*) (Deletable87g28712.wasm:0x2750db)
    at QQuickWindowPrivate::renderSceneGraph(QSize const&, QSize const&) (Deletable87g28712.wasm:0x20e51e)
    at QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*) (Deletable87g28712.wasm:0x1dfa3c)
    at QSGGuiThreadRenderLoop::exposureChanged(QQuickWindow*) (Deletable87g28712.wasm:0x1e0139)

      +

      Uncaught RuntimeError: memory access out of bounds
    at QRawFont::pathForGlyph(unsigned int) const (Deletable87g28712.wasm:0xc5396e)
    at QSGDistanceFieldGlyphCache::glyphData(unsigned int) (Deletable87g28712.wasm:0x21a277)
    at QSGDistanceFieldGlyphNode::updateGeometry() (Deletable87g28712.wasm:0x28581c)
    at QSGDistanceFieldGlyphNode::preprocess() (Deletable87g28712.wasm:0x28556b)
    at QSGRenderer::preprocess() (Deletable87g28712.wasm:0x223c32)
    at QSGRenderer::renderScene() (Deletable87g28712.wasm:0x223173)
    at QSGDefaultRenderContext::renderNextFrame(QSGRenderer*) (Deletable87g28712.wasm:0x2750db)
    at QQuickWindowPrivate::renderSceneGraph(QSize const&, QSize const&) (Deletable87g28712.wasm:0x20e51e)
    at QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*) (Deletable87g28712.wasm:0x1dfa3c)
    at QSGGuiThreadRenderLoop::handleUpdateRequest(QQuickWindow*) (Deletable87g28712.wasm:0x1e04f2)

       
      For macOS the crash log looks like this : 
      crash.log

      I did not try to reproduce the issue under Windows.

      The exact same code works fine with Qt 6.2.2 and also with Qt 6.3.2 .

      Attachments

        1. crash.log
          29 kB
        2. Deletable87g28712.zip
          8.79 MB
        For Gerrit Dashboard: QTBUG-107594
        # Subject Branch Project Status CR V
        438919,4 Keep track of glyphs we're asked to reference dev qt/qtdeclarative Status: MERGED +2 0
        439236,2 Keep track of glyphs we're asked to reference 6.4 qt/qtdeclarative Status: MERGED +2 0

        Activity

          People

            manordheim Mårten Nordheim
            csnt Csaba Szigeti
            Votes:
            1 Vote for this issue
            Watchers:
            3 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved:

              Gerrit Reviews

                There are no open Gerrit changes