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Merge branch 'fix-division-by-zero' into 'master'

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Return infinite distance when denominator is zero.

See merge request libtiff/libtiff!85
This commit is contained in:
Even Rouault 2019-06-29 16:54:50 +00:00
commit ab3204b167
1 changed files with 1 additions and 1 deletions
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libtiff/tif_dirread.c
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@ -5717,7 +5717,7 @@ TIFFFetchSubjectDistance(TIFF* tif, TIFFDirEntry* dir)
TIFFSwabArrayOfLong(m.i,2); TIFFSwabArrayOfLong(m.i,2);
if (m.i[0]==0) if (m.i[0]==0)
n=0.0; n=0.0;
else if (m.i[0]==0xFFFFFFFF) else if (m.i[0]==0xFFFFFFFF || m.i[1]==0)
/* /*
* XXX: Numerator 0xFFFFFFFF means that we have infinite * XXX: Numerator 0xFFFFFFFF means that we have infinite
* distance. Indicate that with a negative floating point * distance. Indicate that with a negative floating point