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0025537: XmlMPrsStd_PositionDriver::Paste runtime check crash.

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Increased a size of buffer in array of 'char' to fit the largest possible conversion from 'double' to %.17g string.
This commit is contained in:
mpv 2017-05-22 14:35:57 +03:00 committed by bugmaster
parent 87432b8278
commit a38db39de6
4 changed files with 32 additions and 3 deletions
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2
src/XmlMDataXtd/XmlMDataXtd_PositionDriver.cxx
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@ -122,7 +122,7 @@ void XmlMDataXtd_PositionDriver::Paste
if (!aTPos.IsNull())
{
gp_Pnt aPos = aTPos->GetPosition();
char buf [64];
char buf [75]; // (24 + 1) * 3
Sprintf (buf, "%.17g %.17g %.17g", aPos.X(), aPos.Y(), aPos.Z());
XmlObjMgt::SetStringValue(theTarget.Element(), buf);
}

2
src/XmlMXCAFDoc/XmlMXCAFDoc_CentroidDriver.cxx
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@ -121,7 +121,7 @@ void XmlMXCAFDoc_CentroidDriver::Paste
if (!aTPos.IsNull())
{
gp_Pnt aPos = aTPos->Get();
char buf [64];
char buf[75]; // (24 + 1) * 3
Sprintf (buf, "%.17g %.17g %.17g", aPos.X(), aPos.Y(), aPos.Z());
XmlObjMgt::SetStringValue(theTarget.Element(), buf);
}

2
src/XmlObjMgt/XmlObjMgt_GP.cxx
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@ -61,7 +61,7 @@ XmlObjMgt_DOMString XmlObjMgt_GP::Translate (const gp_Mat& aMat)
//=======================================================================
XmlObjMgt_DOMString XmlObjMgt_GP::Translate (const gp_XYZ& anXYZ)
{
char buf [64];
char buf [75]; // (24 + 1) * 3
Sprintf (buf, "%.17g %.17g %.17g", anXYZ.X(), anXYZ.Y(), anXYZ.Z());
return XmlObjMgt_DOMString (buf);
}

29
tests/bugs/caf/bug25537 Normal file
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@ -0,0 +1,29 @@
puts "============"
puts "OCC25537"
puts "============"
puts ""
#######################################################################
# XmlMPrsStd_PositionDriver::Paste runtime check crash.
#######################################################################
pload XDEDRAW
NewDocument Doc XmlXCAF
# number that takes 24 symbols in %.17g string
set aBigNum -0.0000000000123456789123456789
# Create TDataXtd_Position and XCAFDoc_Centroid attributes (same problem in writing XML)
# 100 labels to have a stable exception (memory corruption)
for {set i 1} {$i < 100} {incr i} {
set aLab1 0:1:$i
SetPosition Doc $aLab1 $aBigNum $aBigNum $aBigNum
set aLab2 0:2:$i
Label Doc $aLab2
XSetCentroid Doc $aLab2 $aBigNum $aBigNum $aBigNum
}
set aFile ${imagedir}/bug25537_test.xml
SaveAs Doc ${aFile}
## ==> No exception
Close Doc