==9482==ERROR: AddressSanitizer: stack-overflow on address 0x7ffec10e9f58 (pc 0x0000004a5349 bp 0x7ffec10ea7b0 sp 0x7ffec10e9f60 T0)
    #0 0x4a5348 in __asan_memset /builds/slave/moz-toolchain/src/llvm/projects/compiler-rt/lib/asan/asan_interceptors.cc:430:3
    #1 0x7fc2baf40c75 in PropertyProvider::GetSpacingInternal(gfxTextRun::Range, gfxFont::Spacing*, bool) const /builds/worker/workspace/build/src/layout/generic/nsTextFrame.cpp:3445:29
    #2 0x7fc2b632ca48 in GetAdjustedSpacing /builds/worker/workspace/build/src/gfx/thebes/gfxTextRun.cpp:370:16
    #3 0x7fc2b632ca48 in gfxTextRun::GetAdjustedSpacingArray(gfxTextRun::Range, gfxTextRun::PropertyProvider*, gfxTextRun::Range, nsTArray<gfxFont::Spacing>*) const /builds/worker/workspace/build/src/gfx/thebes/gfxTextRun.cpp:403
    #4 0x7fc2b63317c7 in gfxTextRun::AccumulateMetricsForRun(gfxFont*, gfxTextRun::Range, gfxFont::BoundingBoxType, mozilla::gfx::DrawTarget*, gfxTextRun::PropertyProvider*, gfxTextRun::Range, mozilla::gfx::ShapedTextFlags, gfxFont::RunMetrics*) const /builds/worker/workspace/build/src/gfx/thebes/gfxTextRun.cpp:785:24
    #5 0x7fc2b6330885 in gfxTextRun::MeasureText(gfxTextRun::Range, gfxFont::BoundingBoxType, mozilla::gfx::DrawTarget*, gfxTextRun::PropertyProvider*) const /builds/worker/workspace/build/src/gfx/thebes/gfxTextRun.cpp:859:9
    #6 0x7fc2b6334328 in gfxTextRun::BreakAndMeasureText(unsigned int, unsigned int, bool, double, gfxTextRun::PropertyProvider*, gfxTextRun::SuppressBreak, double*, bool, gfxFont::RunMetrics*, gfxFont::BoundingBoxType, mozilla::gfx::DrawTarget*, bool*, unsigned int*, bool, gfxBreakPriority*) /builds/worker/workspace/build/src/gfx/thebes/gfxTextRun.cpp:1183:21
    #7 0x7fc2baf7cd24 in nsTextFrame::ReflowText(nsLineLayout&, int, mozilla::gfx::DrawTarget*, mozilla::ReflowOutput&, nsReflowStatus&) /builds/worker/workspace/build/src/layout/generic/nsTextFrame.cpp:9476:15
    #8 0x7fc2baeb732c in nsLineLayout::ReflowFrame(nsIFrame*, nsReflowStatus&, mozilla::ReflowOutput*, bool&) /builds/worker/workspace/build/src/layout/generic/nsLineLayout.cpp:924:7
