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Build # 10345069135

Build Type

push

github

Committed by web-flow

Commit Message

cmp: sysread failure guard

* Input loop terminates if sysread on file1 fails
* If sysread failed on file2, $read_in2 would be undef, then $checklength would be undef
* It is not correct to compare the two input buffers in this case; $buffer2 possibly wouldn't have been modified since the previous loop iteration
* Skip the buffer comparison if $checklength is zero (treat sysread failure in the same way because there are no bytes to compare)

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