runtime error: index out of range while processing diff

[qzaidi]

Hi,
I am not using this library directly, but via another package (go-git). I have found that in certain cases, there is panic on this line

go-diff/diffmatchpatch/diff.go

Line 452 in da64554

text[i] = lineArray[r]

At the time of panic, the values are

1 iteration ago: i=179592 r=55295 len(chars)=190439 len(lineArray)=58902
next iteration: i=179595 r=65533 len(chars)=190439 len(lineArray)=58902

so clearly lineArray[r] seems to exceed the allocated memory. I still have to understand the code to understand why this happens, but any ideas would be appreciated. Interestingly, in both cases, the diff being processed when panic was unicode.

[r-pai]

Duplicate of #89

[sergi]

Please follow the discussion in #89