[PATCH] D62885: [analyzer] Add werror flag for analyzer warnings

[Keno Fischer via Phabricator via cfe-commits]

loladiro created this revision.
loladiro added a reviewer: NoQ.
Herald added subscribers: cfe-commits, Charusso, dkrupp, donat.nagy, Szelethus, mikhail.ramalho, a.sidorin, szepet, baloghadamsoftware, xazax.hun.
Herald added a project: clang.

We're using the clang static analyzer together with a number of
custom analyses in our CI system to ensure that certain invariants
are statiesfied for by the code every commit. Unfortunately, there
currently doesn't seem to be a good way to determine whether any
analyzer warnings were emitted, other than parsing clang's output
(or using scan-build, which then in turn parses clang's output).
As a simpler mechanism, simply add a `-analyzer-werror` flag to CC1
that causes the analyzer to emit its warnings as errors instead.
I briefly tried to have this be `Werror=analyzer` and make it go
through that machinery instead, but that seemed more trouble than
it was worth in terms of conflicting with options to the actual build
and special cases that would be required to circumvent the analyzers
usual attempts to quiet non-analyzer warnings. This is simple and it
works well.


Repository:
  rC Clang

https://reviews.llvm.org/D62885

Files:
  include/clang/Driver/CC1Options.td
  include/clang/StaticAnalyzer/Core/AnalyzerOptions.h
  lib/Frontend/CompilerInvocation.cpp
  lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
  test/Analysis/override-werror.c

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D62885.203047.patch
Type: text/x-patch
Size: 5683 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20190604/45f37a2f/attachment.bin>