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0024081: Memory corruption when projecting point on surface of revolution

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Adding test cases for issue CR24081
This commit is contained in:
Roman Lygin 2013-08-15 15:55:13 +04:00 committed by bugmaster
parent f4ea2ca675
commit 6f94f1dff9
4 changed files with 31 additions and 8 deletions
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4
src/Extrema/Extrema_ExtPRevS.cdl
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@ -105,7 +105,7 @@ fields
myDone : Boolean;
myNbExt: Integer;
mySqDist: Real [6];
myPoint: POnSurf from Extrema [6];
mySqDist: Real [8];
myPoint: POnSurf from Extrema [8];
end ExtPRevS;

13
src/Extrema/Extrema_ExtPRevS.cxx
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@ -174,7 +174,7 @@ static Standard_Boolean IsOriginalPnt (const gp_Pnt& P,
const Standard_Integer NbPoints)
{
for (Standard_Integer i=1; i<=NbPoints; i++) {
if (Points[i].Value().IsEqual(P, Precision::Confusion())) {
if (Points[i-1].Value().IsEqual(P, Precision::Confusion())) {
return Standard_False;
}
}
@ -407,8 +407,9 @@ void Extrema_ExtPRevS::Perform(const gp_Pnt& P)
Dist2 = P.SquareDistance(E);
}
if (IsOriginalPnt(E, myPoint, myNbExt)) {
myPoint[++myNbExt] = Extrema_POnSurf(U,V,E);
myPoint[myNbExt] = Extrema_POnSurf(U,V,E);
mySqDist[myNbExt] = Dist2;
myNbExt++;
}
}
}
@ -476,9 +477,9 @@ void Extrema_ExtPRevS::Perform(const gp_Pnt& P)
Dist2 = P.SquareDistance(E);
}
if (IsOriginalPnt(E, myPoint, myNbExt)) {
myPoint[++myNbExt] = Extrema_POnSurf(U,V,E);
myPoint[myNbExt] = Extrema_POnSurf(U,V,E);
mySqDist[myNbExt] = Dist2;
myNbExt++;
}
}
}
@ -518,7 +519,7 @@ Standard_Real Extrema_ExtPRevS::SquareDistance(const Standard_Integer N) const
if (!IsDone()) { StdFail_NotDone::Raise(); }
if ((N < 1) || (N > myNbExt)) { Standard_OutOfRange::Raise(); }
if (myIsAnalyticallyComputable)
return mySqDist[N];
return mySqDist[N-1];
else
return myExtPS.SquareDistance(N);
}
@ -532,7 +533,7 @@ Extrema_POnSurf Extrema_ExtPRevS::Point(const Standard_Integer N) const
if (!IsDone()) { StdFail_NotDone::Raise(); }
if ((N < 1) || (N > myNbExt)) { Standard_OutOfRange::Raise(); }
if (myIsAnalyticallyComputable)
return myPoint[N];
return myPoint[N-1];
else
return myExtPS.Point(N);
}

11
tests/bugs/moddata_3/bug24081_1 Normal file
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@ -0,0 +1,11 @@
puts "================"
puts "CR24081"
puts "================"
puts ""
#######################################################################
# Memory corruption when projecting point on surface of revolution
#######################################################################
ellipse e 10 0 0 0 -1 0 0 0 1 5 2
revsurf s e 0 0 0 0 0 1
proj s 7.9 0 0

11
tests/bugs/moddata_3/bug24081_2 Normal file
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@ -0,0 +1,11 @@
puts "================"
puts "CR24081"
puts "================"
puts ""
#######################################################################
# Memory corruption when projecting point on surface of revolution
#######################################################################
ellipse e 2.1 0 0 0 -1 0 0 0 1 5 2
revsurf s e 0 0 0 0 0 1
proj s 0.01 0 0