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Gabor Bencze 3373e84539 [clang-tidy] Add bugprone-suspicious-memory-comparison check 
The check warns on suspicious calls to `memcmp`.
It currently checks for comparing types that do not have
unique object representations or are non-standard-layout.
Based on
  https://wiki.sei.cmu.edu/confluence/display/c/EXP42-C.+Do+not+compare+padding+data
  https://wiki.sei.cmu.edu/confluence/display/c/FLP37-C.+Do+not+use+object+representations+to+compare+floating-point+values
and part of
  https://wiki.sei.cmu.edu/confluence/display/cplusplus/OOP57-CPP.+Prefer+special+member+functions+and+overloaded+operators+to+C+Standard+Library+functions
Add alias `cert-exp42-c` and `cert-flp37-c`.

Some tests are currently failing at head, the check depends on D89649.
Originally started in D71973

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D89651
 		2021-08-26 09:23:37 +02:00
..
clang-apply-replacements [clang-tools-extra] Prevent linking to duplicate .a libs and dylib 2020-06-17 19:00:26 +02:00
clang-change-namespace Reapply "Support Attr in DynTypedNode and ASTMatchers." 2021-08-06 22:30:32 +02:00
clang-doc PR51018: Remove explicit conversions from SmallString to StringRef to future-proof against C++23 2021-07-08 13:37:57 -07:00
clang-include-fixer [clang-include-fixer] Pre-reserve vector size. NFC 2021-02-03 08:30:45 +01:00
clang-move [SystemZ][z/OS][Windows] Add new OF_TextWithCRLF flag and use this flag instead of OF_Text 2021-04-06 07:23:31 -04:00
clang-query [clang-query] Add check to prevent setting srcloc when no introspection is available. 2021-04-28 11:21:35 +01:00
clang-reorder-fields [clang-tooling] Prevent llvm::fatal_error on invalid CLI option 2021-01-29 10:15:06 +01:00
clang-tidy [clang-tidy] Add bugprone-suspicious-memory-comparison check 2021-08-26 09:23:37 +02:00
clangd [clangd] detectClangPath() - remove (dead) return. NFC. 2021-08-20 12:41:38 +01:00
docs [clang-tidy] Add bugprone-suspicious-memory-comparison check 2021-08-26 09:23:37 +02:00
modularize [clang-tools-extra] Rename StringRef _lower() method calls to _insensitive() 2021-06-25 00:22:01 +03:00
pp-trace Replace LLVM_ATTRIBUTE_NORETURN with C++11 [[noreturn]]. NFC 2021-07-29 09:59:45 -07:00
test [clang-tidy] Add bugprone-suspicious-memory-comparison check 2021-08-26 09:23:37 +02:00
tool-template [OpenMP] "UnFix" layering problem with FrontendOpenMP 2020-04-07 14:41:18 -05:00
unittests [clang-query] Add check to prevent setting srcloc when no introspection is available. 2021-04-28 11:21:35 +01:00
.gitignore
…
CMakeLists.txt Add an explicit toggle for the static analyzer in clang-tidy 2020-09-10 10:48:17 -04:00
CODE_OWNERS.TXT [clangd] add CODE_OWNERS 2020-01-29 12:43:19 +01:00
LICENSE.TXT
…
README.txt
…

README.txt 

//===----------------------------------------------------------------------===//
// Clang Tools repository
//===----------------------------------------------------------------------===//

Welcome to the repository of extra Clang Tools.  This repository holds tools
that are developed as part of the LLVM compiler infrastructure project and the
Clang frontend.  These tools are kept in a separate "extra" repository to
allow lighter weight checkouts of the core Clang codebase.

This repository is only intended to be checked out inside of a full LLVM+Clang
tree, and in the 'tools/extra' subdirectory of the Clang checkout.

All discussion regarding Clang, Clang-based tools, and code in this repository
should be held using the standard Clang mailing lists:
  http://lists.llvm.org/mailman/listinfo/cfe-dev

Code review for this tree should take place on the standard Clang patch and
commit lists:
  http://lists.llvm.org/mailman/listinfo/cfe-commits

If you find a bug in these tools, please file it in the LLVM bug tracker:
  http://llvm.org/bugs/