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0030992: Foundation Classes - heap-buffer-overflow reported by Clang address sanitizer in BSplCLib::BuildKnots()

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Inconsistent code for guessing bspline span index is removed in Geom_OsculatingSurface::BuildOsculatingSurface().
This commit is contained in:
abv
2019-10-01 08:23:26 +03:00
parent c2bcd98369
commit 9e3045dae1
2 changed files with 2 additions and 12 deletions
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5
src/Geom/Geom_OsculatingSurface.cxx
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@@ -446,7 +446,6 @@ Standard_Boolean Geom_OsculatingSurface::BuildOsculatingSurface
const Handle(Geom_BSplineSurface)& BS,
Handle(Geom_BSplineSurface)& BSpl) const
{
Standard_Integer i, j;
Standard_Boolean OsculSurf=Standard_True;
#ifdef OCCT_DEBUG
std::cout<<"t = "<<Param<<std::endl;
@@ -492,7 +491,7 @@ Standard_Boolean Geom_OsculatingSurface::BuildOsculatingSurface
MaxUDegree = (Standard_Integer ) udeg;
MaxVDegree = (Standard_Integer ) vdeg;
for (i=1;i<=2;i++)
for (Standard_Integer i = 1; i <= 2; i++)
{
PolynomialUIntervals->ChangeValue(i) = i-1;
PolynomialVIntervals->ChangeValue(i) = i-1;
@@ -560,8 +559,6 @@ Standard_Boolean Geom_OsculatingSurface::BuildOsculatingSurface
VLocalIndex = 0;
ULocalIndex = 0;
for(j = 1; j <= SVKnot; j++) VLocalIndex += BS->VMultiplicity(j);
for(i = 1; i <= SUKnot; i++) ULocalIndex += BS->UMultiplicity(i);
ucacheparameter = BS->UKnot(SUKnot);
vcacheparameter = BS->VKnot(SVKnot);
vspanlength = BS->VKnot(SVKnot + 1) - BS->VKnot(SVKnot);