[Analyzer] Iterator Checkers - Prevent crashing on iterator differences

Ericsson / clang

Cross Translation Unit analysis capability for Clang Static Analyzer. (Fork of official clang at http://llvm.org/git/clang)

http://clang.llvm.org/

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Closed baloghadamsoftware closed 5 years ago

baloghadamsoftware commented 5 years ago

Iterators differences were mistakenly handled as random decrements which causes an assertion. This patch fixes this.