[cfe-commits] [PATCH] Improve -Wtautological-constant-out-of-range-compare

[Richard Trieu]

Make -Wtautological-constant-out-of-range-compare checking take into account types and conversion between types.  The old version merely checked the bit widths, which allowed failed to catch a few cases, while warning on other safe comparisons.

http://llvm-reviews.chandlerc.com/D113

Files:
  test/Analysis/additive-folding.cpp
  test/SemaCXX/compare.cpp
  test/SemaCXX/warn-enum-compare.cpp
  lib/Sema/SemaChecking.cpp
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