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Widget annotations: do not crash if Parent is not a dictionary

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during field name construction (issue 8143)
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Tim van der Meij 2017-03-09 23:51:52 +01:00
parent 25f772a255
commit 936d3c0698
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2 changed files with 28 additions and 0 deletions
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6
src/core/annotation.js
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@ -671,6 +671,12 @@ var WidgetAnnotation = (function WidgetAnnotationClosure() {
var loopDict = dict;
while (loopDict.has('Parent')) {
loopDict = loopDict.get('Parent');
if (!isDict(loopDict)) {
// Even though it is not allowed according to the PDF specification,
// bad PDF generators may provide a `Parent` entry that is not a
// dictionary, but `null` for example (issue 8143).
break;
}
if (loopDict.has('T')) {
fieldName.unshift(stringToPDFString(loopDict.get('T')));