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avoid infinite loop in #291, logic issue is still present for png predictor

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Eliot Jones
2021-02-23 15:04:28 -04:00
parent 560e8ae858
commit cc81541ce2
1 changed files with 7 additions and 0 deletions
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7
src/UglyToad.PdfPig/Filters/PngPredictor.cs
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@@ -55,6 +55,13 @@
int offset = 0; int offset = 0;
while (offset < rowlength && ((i = input.Read(actline, offset, rowlength - offset)) != -1)) while (offset < rowlength && ((i = input.Read(actline, offset, rowlength - offset)) != -1))
{ {
if (i == 0)
{
// TODO: #291, this indicates a bug in reading logic.
// This only avoids the infinite loop it does not fix the logic bug.
break;
}
offset += i; offset += i;
} }