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llvm-svn: 282317
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Remove the relative path hack in scan-build-py that converts a fully qualified
directory name and a fully qualified file path to a relative path before running
the analyzer on a file.
This hack is not needed: the bad interaction with SATestsBuild.py it was
intended to address is actually the same underlying problem that r280768 fixed.
Further, because the hack would always relativize paths, it caused
SATestBuild.py to be unable to properly line up issues when the build system
changed directory and then built a source file in a child directory but used a
fully-qualified path for the source file.
Differential Revision: https://reviews.llvm.org/D24470
llvm-svn: 281516
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This commit improves compatibility with the perl version of scan-build.
The perl version of scan-build produces output report directories with
increasing lexicographic ordering. This ordering is relied on by the CmpRuns.py
tool in utils/analyzer when comparing results for build commands with multiple
steps. That tool tries to line up the output directory for each step between
different runs of the analyzer based on the increasing directory name.
The python version of scan-build uses file.mkdtemp() with a time stamp
prefix to create report directories. The timestamp has a 1-second precision.
This means that when analysis of a single build step takes less than a second
the ordering property that CmpRuns.py expects will sometimes not hold,
depending on the timing and the random suffix generated by mkdtemp(). Ultimately
this causes CmpRuns to incorrectly correlate results from build steps and report
spurious differences between runs.
This commit increases the precision of the timestamp used in scan-build-py to
the microsecond level. This approach still has the same underlying issue -- but
in practice analysis of any build step is unlikely to take less than a
millisecond.
Differential Revision: https://reviews.llvm.org/D24163
llvm-svn: 280768
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database creation
llvm-svn: 266726
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to force debug build and hopefully enable more precise warnings.
Static Analyzer is much more efficient when built in debug mode
(-UNDEBUG) so we advice users to enable it manually. This may be
inconvenient in case of large complex projects (think about Linux
distros e.g. Android or Tizen). This patch adds a flag to scan-build
which inserts -UNDEBUG automatically.
Differential Revision: http://reviews.llvm.org/D16200
llvm-svn: 261204
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llvm-svn: 257533
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