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Overflow situation when parsing an int #1185

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@zamedic

We have a test PDF File that contains the following Rect

<< /T (Ann Whitby) /AP << /N 0 0 R >> /Rect [ -89884656743115785407263711865852178399035283762922498299458738401578630390014269380294779316383439085770229476757191232117160663444732091384233773351768758493024955288275641038122745045194664472037934254227566971152291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184
-89884656743115785407263711865852178399035283762922498299458738401578630390014269380294779316383439085770229476757191232117160663444732091384233773351768758493024955288275641038122745045194664472037934254227566971152291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184
89884656743115785407263711865852178399035283762922498299458738401578630390014269380294779316383439085770229476757191232117160663444732091384233773351768758493024955288275641038122745045194664472037934254227566971152291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184
89884656743115785407263711865852178399035283762922498299458738401578630390014269380294779316383439085770229476757191232117160663444732091384233773351768758493024955288275641038122745045194664472037934254227566971152291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184
] /AAPL:AKExtras << /AAPL:AKPDFAnnotationDictionary << /T (Ann Whitby) /AP
<< /N 0 0 R >> /Rect [ -89884656743115785407263711865852178399035283762922498299458738401578630390014269380294779316383439085770229476757191232117160663444732091384233773351768758493024955288275641038122745045194664472037934254227566971152291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184
-89884656743115785407263711865852178399035283762922498299458738401578630390014269380294779316383439085770229476757191232117160663444732091384233773351768758493024955288275641038122745045194664472037934254227566971152291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184
89884656743115785407263711865852178399035283762922498299458738401578630390014269380294779316383439085770229476757191232117160663444732091384233773351768758493024955288275641038122745045194664472037934254227566971152291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184
89884656743115785407263711865852178399035283762922498299458738401578630390014269380294779316383439085770229476757191232117160663444732091384233773351768758493024955288275641038122745045194664472037934254227566971152291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184
] /F 4 /DA (/Helvetica 12 Tf 0 g) /Type /Annot /Border [ 0 0 0 ] /M (D:20200821090859Z00'00')
/Subtype /Stamp >> /AAPL:AKAnnotationObject

I honestly have no idea how it was created.

The above fails in

i, err := strconv.Atoi(s)

it is a ranged error, so the error is being returned.
panic: dereferenceAndLoad: problem dereferencing object 176: strconv.Atoi: parsing "89884656743115785407263711865852178399035283762922498299458738401578630390014269380294779316383439085770229476757191232117160663444732091384233773351768758493024955288275641038122745045194664472037934254227566971152291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184": value out of range

The PDF file does open in my standard PDF readers.

File has been attached for your personal viewing pleasure.

Right now, I am not sure on a proposed fix, was hoping the minds here had a suggestion

Lageplan Adlon Erweiterung (1).pdf

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