[PATCH] D37387: [Coverage] Report errors when reading malformed source regions

[Vedant Kumar via Phabricator via llvm-commits]

vsk created this revision.

Each source region has a start and end location. Report an error when
the end location does not precede the begin location.

      

The old lineExecutionCounts.covmapping test actually had a buggy source
region in it. This commit introduces a regenerated copy of the coverage
and moves the old copy to malformedRegions.covmapping, for a test.

This is needed to unblock https://reviews.llvm.org/D36813, since the proposed segment builder
changes assert-fail when given bogus input.


https://reviews.llvm.org/D37387

Files:
  include/llvm/ProfileData/Coverage/CoverageMappingReader.h
  lib/ProfileData/Coverage/CoverageMapping.cpp
  lib/ProfileData/Coverage/CoverageMappingReader.cpp
  lib/ProfileData/Coverage/CoverageMappingWriter.cpp
  test/tools/llvm-cov/Inputs/lineExecutionCounts.covmapping
  test/tools/llvm-cov/Inputs/lineExecutionCounts.json
  test/tools/llvm-cov/Inputs/malformedRegions.covmapping
  test/tools/llvm-cov/showLineExecutionCounts.cpp
  test/tools/llvm-cov/warnings.h

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