diff options
| author | Stephan Bergmann <sbergman@redhat.com> | 2016-11-17 14:32:07 +0100 |
|---|---|---|
| committer | Stephan Bergmann <sbergman@redhat.com> | 2016-11-17 14:32:07 +0100 |
| commit | 2f976709bca1fc58e3846ceaea562af85e9a92e0 (patch) | |
| tree | 3b4ea9ea22aaf610d1a8db842d7f76b6b3907353 /sw/source | |
| parent | 447a65db6b7ea2ed580f2fdd364ac6084cc282be (diff) | |
Avoid -fsanitize=signed-integer-overflow
Both Writer: "Table - Insert Table... - Insert", "Table - AutoFormat Styles...";
and Calc: select multiple cells, "Format - AutoFormat Styles..." cause
> svx/source/dialog/framelinkarray.cxx:82:29: runtime error: signed integer overflow: -4702111234474983744 + -4702111234474983746 cannot be represented in type 'long'
> #0 0x7f84ef0e36ba in svx::frame::lclRecalcCoordVec(std::__debug::vector<long, std::allocator<long> >&, std::__debug::vector<long, std::allocator<long> > const&) svx/source/dialog/framelinkarray.cxx:82:29
> #1 0x7f84ef0e780e in svx::frame::ArrayImpl::GetColPosition(unsigned long) const svx/source/dialog/framelinkarray.cxx:265:9
> #2 0x7f84ef0f95ae in svx::frame::Array::GetColPosition(unsigned long) const svx/source/dialog/framelinkarray.cxx:762:20
> #3 0x7f84ef0f9e56 in svx::frame::Array::GetWidth() const svx/source/dialog/framelinkarray.cxx:787:12
> #4 0x7f852e9df8fd in ScAutoFmtPreview::CalcCellArray(bool) sc/source/ui/miscdlgs/autofmt.cxx:429:32
> #5 0x7f852e9c7740 in ScAutoFmtPreview::Init() sc/source/ui/miscdlgs/autofmt.cxx:407:5
> #6 0x7f852e9c9102 in ScAutoFmtPreview::ScAutoFmtPreview(vcl::Window*) sc/source/ui/miscdlgs/autofmt.cxx:73:5
where -4702111234474983746 = 0xbebebebebebebebe is ASan's uninitialized value
stored into ScAutoFmtPreview::mnLableColWidth et al. Those (overflowing, even)
computations on uninitialized values appear to be harmless in practice, though,
presumably because they are overwritten with "real" values soon after.
Change-Id: I487fc4681afe79c4e8532595226cba4c9c0c9b2d
Diffstat (limited to 'sw/source')
| -rw-r--r-- | sw/source/ui/table/tautofmt.cxx | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sw/source/ui/table/tautofmt.cxx b/sw/source/ui/table/tautofmt.cxx index df74f780cc88..8cce0698cca7 100644 --- a/sw/source/ui/table/tautofmt.cxx +++ b/sw/source/ui/table/tautofmt.cxx @@ -825,6 +825,10 @@ void AutoFormatPreview::Init() SetBorderStyle( GetBorderStyle() | WindowBorderStyle::MONO ); maArray.Initialize( 5, 5 ); maArray.SetUseDiagDoubleClipping( false ); + nLabelColWidth = 0; + nDataColWidth1 = 0; + nDataColWidth2 = 0; + nRowHeight = 0; CalcCellArray( false ); CalcLineMap(); } |