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8 Commits

Author SHA1 Message Date
Alexander Kornienko dcbe5a9d17 [clang-tidy] Fix a false positive in google-runtime-memset 
google-runtime-memset no longer issues a warning if the fill char value
is known to be an invalid fill char count.

Namely, it no longer warns for these:

  memset(p, 0, 0);
  memset(p, -1, 0);

In both cases, swapping the last two args would either be useless (there is
no actual bug) or wrong (it would introduce a bug).

Patch by Matt Armstrong!

llvm-svn: 257320
 2016-01-11 10:26:29 +00:00
Alexander Kornienko ed824e0e4b [clang-tidy] Refactor: Move google clang-tidy checks to namespace clang::tidy::google 
http://reviews.llvm.org/D7994

Patch by Richard Thomson!

llvm-svn: 231364
 2015-03-05 13:46:14 +00:00
Chandler Carruth 3cbd71c03b [cleanup] Re-sort the #include lines with llvm/utils/sort_includes.py 
No functionality changed, this is just a mechanical cleanup to keep the
order of #include lines consistent across the project.

llvm-svn: 225976
 2015-01-14 11:24:38 +00:00
Benjamin Kramer b7f59d6bbd [clang-tidy] Use new ASTMatchers to identify template instantiations instead of copying it everywhere. 
No intended functionality change.

llvm-svn: 217035
 2014-09-03 13:21:51 +00:00
Benjamin Kramer 01f5686298 [clang-tidy] MemsetZeroLenghtChecker: Don't crash trying to evaluate dependent values. 
llvm-svn: 213238
 2014-07-17 08:56:55 +00:00
Benjamin Kramer 806bcabcda [clang-tidy] As a simple heuristic don't emit a swap fixit that would create 
negative-sized memsets.

memset(x, -1, 0) is still useless but swapping makes no sense here. Just emit
a warning.

llvm-svn: 213157
 2014-07-16 14:52:07 +00:00
Benjamin Kramer d6a499077a [clang-tidy] Also emit a warning for memset(x, 0, 0) 
It doesn't make sense to suggest swapping the arguments here but it's
still useless code

llvm-svn: 213156
 2014-07-16 14:42:43 +00:00
Benjamin Kramer ebab1500e0 [clang-tidy] Add a checker for zero-length memset. 
If there's memset(x, y, 0) in the code it's most likely a mistake. The
checker suggests a fix-it to swap 'y' and '0'.

I think this has the potential to be promoted into a general clang warning
after some testing in clang-tidy.

Differential Revision: http://reviews.llvm.org/D4535

llvm-svn: 213155
 2014-07-16 14:30:19 +00:00