...as seen during CppunitTest_xmloff_style,
> workdir/UnpackedTarball/freetype/src/truetype/ttgxvar.c:1048:31: runtime error: applying zero offset to null pointer
> #0 in tt_var_get_item_delta at workdir/UnpackedTarball/freetype/src/truetype/ttgxvar.c:1048:31
> #1 in tt_hvadvance_adjust at workdir/UnpackedTarball/freetype/src/truetype/ttgxvar.c:1242:13
> #2 in tt_vadvance_adjust at workdir/UnpackedTarball/freetype/src/truetype/ttgxvar.c:1278:12
> #3 in tt_face_get_metrics at workdir/UnpackedTarball/freetype/src/sfnt/ttmtx.c:319:11
> #4 in cff_slot_load at workdir/UnpackedTarball/freetype/src/cff/cffgload.c:660:11
> #5 in cff_glyph_load at workdir/UnpackedTarball/freetype/src/cff/cffdrivr.c:192:13
> #6 in FT_Load_Glyph at workdir/UnpackedTarball/freetype/src/base/ftobjs.c:1066:15
> #7 in _cairo_ft_scaled_glyph_load_glyph at workdir/UnpackedTarball/cairo/src/cairo-ft-font.c:2455:13
> #8 in _cairo_ft_scaled_glyph_init at workdir/UnpackedTarball/cairo/src/cairo-ft-font.c:2640:11
> #9 in _cairo_scaled_glyph_lookup at workdir/UnpackedTarball/cairo/src/cairo-scaled-font.c:3035:6
> #10 in _cairo_scaled_font_glyph_device_extents at workdir/UnpackedTarball/cairo/src/cairo-scaled-font.c:2250:15
> #11 in _cairo_composite_rectangles_init_for_glyphs at workdir/UnpackedTarball/cairo/src/cairo-composite-rectangles.c:476:14
> #12 in _cairo_compositor_glyphs at workdir/UnpackedTarball/cairo/src/cairo-compositor.c:280:14
> #13 in _cairo_image_surface_glyphs at workdir/UnpackedTarball/cairo/src/cairo-image-surface.c:1030:12
> #14 in _cairo_surface_show_text_glyphs at workdir/UnpackedTarball/cairo/src/cairo-surface.c:2920:15
> #15 in _cairo_gstate_show_text_glyphs at workdir/UnpackedTarball/cairo/src/cairo-gstate.c:2077:15
> #16 in _cairo_default_context_glyphs at workdir/UnpackedTarball/cairo/src/cairo-default-context.c:1334:12
> #17 in cairo_show_glyphs at workdir/UnpackedTarball/cairo/src/cairo.c:3670:14
> #18 in CairoTextRender::DrawTextLayout(GenericSalLayout const&, SalGraphics const&) at vcl/unx/generic/gdi/cairotextrender.cxx:477:9
> #19 in SvpSalGraphics::DrawTextLayout(GenericSalLayout const&) at vcl/headless/svptext.cxx:72:23
> #20 in GenericSalLayout::DrawText(SalGraphics&) const at vcl/source/gdi/CommonSalLayout.cxx:171:18
> #21 in OutputDevice::ImplDrawTextDirect(SalLayout&, bool) at vcl/source/outdev/text.cxx:312:16
> #22 in OutputDevice::ImplDrawText(SalLayout&) at vcl/source/outdev/text.cxx:463:9
> #23 in OutputDevice::DrawTextArray(Point const&, rtl::OUString const&, KernArraySpan, std::span<unsigned char const, 18446744073709551615ul>, int, int, SalLayoutFlags, SalLayoutGlyphs const*) at vcl/source/outdev/text.cxx:701:9
> #24 in SwFntObj::DrawText(SwDrawTextInfo&) at sw/source/core/txtnode/fntcache.cxx:1490:31
> #25 in SwSubFont::DrawText_(SwDrawTextInfo&, bool) at sw/source/core/txtnode/swfont.cxx:1144:24
> #26 in SwFont::DrawText_(SwDrawTextInfo&) at sw/source/core/inc/swfont.hxx:324:29
> #27 in SwTextPaintInfo::DrawText_(rtl::OUString const&, SwLinePortion const&, o3tl::strong_int<int, Tag_TextFrameIndex>, o3tl::strong_int<int, Tag_TextFrameIndex>, bool, bool, bool, bool) at sw/source/core/text/inftxt.cxx:730:21
> #28 in SwTextPaintInfo::DrawText(SwLinePortion const&, o3tl::strong_int<int, Tag_TextFrameIndex>, bool) const at sw/source/core/text/inftxt.hxx:783:41
> #29 in SwTextPortion::Paint(SwTextPaintInfo const&) const at sw/source/core/text/portxt.cxx:603:18
> #30 in SwTextPainter::DrawTextLine(SwRect const&, SwSaveClip&, bool, std::optional<SwTaggedPDFHelper>&, std::optional<SwTaggedPDFHelper>&, bool) at sw/source/core/text/itrpaint.cxx:433:23
> #31 in SwTextFrame::PaintSwFrame(OutputDevice&, SwRect const&) const at sw/source/core/text/frmpaint.cxx:787:23
> #32 in SwLayoutFrame::PaintSwFrame(OutputDevice&, SwRect const&) const at sw/source/core/layout/paintfrm.cxx:3804:21
> #33 in SwFlyFrame::PaintSwFrame(OutputDevice&, SwRect const&) const at sw/source/core/layout/paintfrm.cxx:4507:20
> #34 in SwVirtFlyDrawObj::wrap_DoPaintObject(drawinglayer::geometry::ViewInformation2D const&) const at sw/source/core/draw/dflyobj.cxx:541:18
> #35 in drawinglayer::primitive2d::(anonymous namespace)::SwVirtFlyDrawObjPrimitive::get2DDecomposition(drawinglayer::primitive2d::Primitive2DDecompositionVisitor&, drawinglayer::geometry::ViewInformation2D const&) const at sw/source/core/draw/dflyobj.cxx:244:35
> #36 in drawinglayer::processor2d::BaseProcessor2D::process(drawinglayer::primitive2d::BasePrimitive2D const&) at drawinglayer/source/processor2d/baseprocessor2d.cxx:46:24
> #37 in drawinglayer::processor2d::VclPixelProcessor2D::processBasePrimitive2D(drawinglayer::primitive2d::BasePrimitive2D const&) at drawinglayer/source/processor2d/vclpixelprocessor2d.cxx:397:13
> #38 in drawinglayer::processor2d::BaseProcessor2D::process(drawinglayer::primitive2d::Primitive2DContainer const&) at drawinglayer/source/processor2d/baseprocessor2d.cxx:69:21
> #39 in sdr::contact::ObjectContactOfPageView::DoProcessDisplay(sdr::contact::DisplayInfo&) at svx/source/sdr/contact/objectcontactofpageview.cxx:284:31
> #40 in sdr::contact::ObjectContactOfPageView::ProcessDisplay(sdr::contact::DisplayInfo&) at svx/source/sdr/contact/objectcontactofpageview.cxx:120:21
> #41 in SdrPageWindow::RedrawLayer(o3tl::strong_int<short, SdrLayerIDTag> const*, sdr::contact::ViewObjectContactRedirector*, basegfx::B2IRange const*) at svx/source/svdraw/sdrpagewindow.cxx:421:28
> #42 in SdrPageView::DrawLayer(o3tl::strong_int<short, SdrLayerIDTag>, OutputDevice*, sdr::contact::ViewObjectContactRedirector*, tools::Rectangle const&, basegfx::B2IRange const*) at svx/source/svdraw/svdpagv.cxx:265:27
> #43 in SwViewShellImp::PaintLayer(o3tl::strong_int<short, SdrLayerIDTag>, SwPageFrame const&, SwRect const&, Color const*, bool, sdr::contact::ViewObjectContactRedirector*) at sw/source/core/view/vdraw.cxx:139:20
> #44 in SwRootFrame::PaintSwFrame(OutputDevice&, SwRect const&) const at sw/source/core/layout/paintfrm.cxx:3527:33
> #45 in SwViewShell::PrtOle2(SwDoc*, SwViewOption const*, SwPrintData const&, OutputDevice&, tools::Rectangle const&, bool) at sw/source/core/view/vprint.cxx:592:27
> #46 in SwDocShell::Draw(OutputDevice*, JobSetup const&, unsigned short, bool) at sw/source/uibase/app/docsh.cxx:881:5
> #47 in SfxObjectShell::DoDraw_Impl(OutputDevice*, Point const&, Fraction const&, Fraction const&, JobSetup const&, unsigned short, bool) at sfx2/source/doc/objembed.cxx:204:5
> #48 in SfxObjectShell::DoDraw(OutputDevice*, Point const&, Size const&, JobSetup const&, unsigned short, bool) at sfx2/source/doc/objembed.cxx:151:9
> #49 in SfxObjectShell::CreatePreview_Impl(bool, VirtualDevice*, GDIMetaFile*) const at sfx2/source/doc/objcont.cxx:198:40
> #50 in SfxObjectShell::GetPreviewBitmap() const at sfx2/source/doc/objcont.cxx:110:9
> #51 in SfxObjectShell::WriteThumbnail(bool, com::sun:⭐:uno::Reference<com::sun:⭐:io::XStream> const&) at sfx2/source/doc/objstor.cxx:3850:31
> #52 in SfxObjectShell::GenerateAndStoreThumbnail(bool, com::sun:⭐:uno::Reference<com::sun:⭐:embed::XStorage> const&) at sfx2/source/doc/objstor.cxx:3808:33
> #53 in SfxObjectShell::SaveTo_Impl(SfxMedium&, SfxItemSet const*) at sfx2/source/doc/objstor.cxx:1531:19
> #54 in SfxObjectShell::PreDoSaveAs_Impl(rtl::OUString const&, rtl::OUString const&, SfxItemSet const&, com::sun:⭐:uno::Sequence<com::sun:⭐🫘:PropertyValue> const&) at sfx2/source/doc/objstor.cxx:3117:39
> #55 in SfxObjectShell::CommonSaveAs_Impl(INetURLObject const&, rtl::OUString const&, SfxItemSet&, com::sun:⭐:uno::Sequence<com::sun:⭐🫘:PropertyValue> const&) at sfx2/source/doc/objstor.cxx:2907:9
> #56 in SfxObjectShell::APISaveAs_Impl(std::basic_string_view<char16_t, std::char_traits<char16_t>>, SfxItemSet&, com::sun:⭐:uno::Sequence<com::sun:⭐🫘:PropertyValue> const&) at sfx2/source/doc/objserv.cxx:320:19
> #57 in SfxBaseModel::impl_store(rtl::OUString const&, com::sun:⭐:uno::Sequence<com::sun:⭐🫘:PropertyValue> const&, bool) at sfx2/source/doc/sfxbasemodel.cxx:3233:42
> #58 in SfxBaseModel::storeToURL(rtl::OUString const&, com::sun:⭐:uno::Sequence<com::sun:⭐🫘:PropertyValue> const&) at sfx2/source/doc/sfxbasemodel.cxx:1815:13
> #59 in UnoApiTest::saveWithParams(com::sun:⭐:uno::Sequence<com::sun:⭐🫘:PropertyValue> const&) at test/source/unoapi_test.cxx:213:16
> #60 in UnoApiTest::save(rtl::OUString const&, char const*) at test/source/unoapi_test.cxx:178:5
> #61 in testWritingModeBTLR::TestBody() at xmloff/qa/unit/style.cxx:193:9
Change-Id: I54d4d90e203127e018b99c34785602ac3d96e425
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/163925
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>
FreeType 2 is a software font engine that is designed to be small, efficient, highly customizable,
and portable while capable of producing high-quality output (glyph images). It can be
used in graphics libraries, display servers, font conversion tools, text image generation
tools, and many other products as well.
From [http://freetype.sourceforge.net/freetype2/index.html]
9a8f4fb408