[PATCH] D54733: [ASan] Make asan report decoration more efficient

[Armando Montanez via Phabricator via llvm-commits]

amontanez created this revision.
amontanez added a reviewer: jakehehrlich.
Herald added subscribers: Sanitizers, llvm-commits, kubamracek.

ASan's report decoration doesn't maintain any state regarding terminal color output.  When printing shadow bytes, one printed byte involves two color changes, even if subsequent bytes are the same color. This patch ensures a decorator only changes the terminal output color when printing a byte of a different color. This significantly reduces the number of characters in the output when printing shadow bytes without changing how the output looks.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D54733

Files:
  compiler-rt/lib/asan/asan_descriptions.cc
  compiler-rt/lib/asan/asan_descriptions.h
  compiler-rt/lib/asan/asan_errors.cc
  compiler-rt/lib/asan/asan_report.cc
  compiler-rt/lib/asan/asan_report.h
  compiler-rt/lib/sanitizer_common/sanitizer_report_decorator.h

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