[PATCH] D19577: [clang-tidy] Enhance misc-suspicious-string-compare by matching string.compare

[Etienne Bergeron via cfe-commits]

etienneb created this revision.
etienneb added a reviewer: alexfh.
etienneb added a subscriber: cfe-commits.

This patch added the support for method "compare" on string-like classes.

The LLVM stringRef is supported. The checker assume that StringRef is returning -1, 0 or 1.
Which is not the case for other functions returning <0, 0 or >0.

http://reviews.llvm.org/D19577

Files:
  clang-tidy/misc/SuspiciousStringCompareCheck.cpp
  test/clang-tidy/misc-suspicious-string-compare.cpp

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