Commit Graph

9 Commits

Author SHA1 Message Date
Nathan James e40a742a50 [clang-tidy] Change checks to use new isLanguageVersionSupported restriction
Summary: Modifies all checks that are language version dependent to use `isLanguageVersionSupported`

Reviewers: jdoerfert, lebedev.ri, aaron.ballman, gribozavr2, Eugene.Zelenko

Reviewed By: gribozavr2

Subscribers: wuzish, nemanjai, xazax.hun, hiraditya, kbarton, steven_wu, dexonsmith, arphaman, lebedev.ri, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75340
2020-03-03 16:43:45 +00:00
Mitchell Balan df11117086 [clang-tidy] modernize-use-override new option AllowOverrideAndFinal
Summary:
In addition to adding `override` wherever possible, clang-tidy's `modernize-use-override` nicely removes `virtual` when `override` or `final` is specified, and further removes override when final is specified. While this is great default behavior, when code needs to be compiled with gcc at high warning levels that include `gcc -Wsuggest-override` or `gcc -Werror=suggest-override`, clang-tidy's removal of the redundant `override` keyword causes gcc to emit a warning or error. This discrepancy / conflict has been noted by others including a comment on Stack Overflow and by Mozilla's Firefox developers.

This patch adds an AllowOverrideAndFinal option defaulting to 0 - thus preserving current behavior - that when enabled allows both `override` and `final` to co-exist, while still fixing all other issues.

The patch includes a test file verifying all combinations of virtual/override/final, and mentions the new option in the release notes.

Reviewers: alexfh, djasper, JonasToth

Patch by: poelmanc

Subscribers: JonasToth, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D70165
2019-11-19 07:52:32 -05:00
Mitchell Balan 41ee54e5d1 Revert "[clang-tidy] Fix readability-redundant-string-init for c++17/c++2a"
This reverts commit 06f3dabe4a.
2019-11-19 07:52:31 -05:00
Mitchell Balan 06f3dabe4a [clang-tidy] Fix readability-redundant-string-init for c++17/c++2a
Summary:
`readability-redundant-string-init` was one of several clang-tidy checks documented as failing for C++17. (The failure mode in C++17 is that it changes `std::string Name = ""`; to `std::string Name = Name;`, which actually compiles but crashes at run-time.)

Analyzing the AST with `clang -Xclang -ast-dump` showed that the outer `CXXConstructExprs` that previously held the correct SourceRange were being elided in C++17/2a, but the containing `VarDecl` expressions still had all the relevant information. So this patch changes the fix to get its source ranges from `VarDecl`.

It adds one test `std::string g = "u", h = "", i = "uuu", j = "", k;` to confirm proper warnings and fixit replacements in a single `DeclStmt` where some strings require replacement and others don't. The readability-redundant-string-init.cpp and readability-redundant-string-init-msvc.cpp tests now pass for C++11/14/17/2a.

Reviewers: gribozavr, etienneb, alexfh, hokein, aaron.ballman, gribozavr2

Patch by: poelmanc

Subscribers: NoQ, MyDeveloperDay, Eugene.Zelenko, dylanmckay, cfe-commits

Tags: #clang, #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D69238
2019-11-15 18:09:42 -05:00
Alexander Kornienko 478fc5c83e [clang-tidy] Switch checks to #include "ClangTidyCheck.h"
llvm-svn: 356892
2019-03-25 12:38:26 +00:00
Paul Hoad 68f5e5456f [clang-tidy] add OverrideMacro to modernize-use-override check
Summary:
The usefulness of **modernize-use-override** can be reduced if you have to live in an environment where you support multiple compilers, some of which sadly are not yet fully C++11 compliant

some codebases have to use override as a macro OVERRIDE e.g.

```
// GCC 4.7 supports explicit virtual overrides when C++11 support is enabled.
```

This allows code to be compiled with C++11 compliant compilers and get warnings and errors that clang, MSVC,gcc can give, while still allowing other legacy pre C++11 compilers to compile the code. This can be an important step towards modernizing C++ code whilst living in a legacy codebase.

When it comes to clang tidy, the use of the **modernize-use-override** is one of the most useful checks, but the messages reported are inaccurate for that codebase if the standard approach is to use the macros OVERRIDE and/or FINAL.

When combined with fix-its that introduce the C++11 override keyword, they become fatal, resulting in the modernize-use-override check being turned off to prevent the introduction of such errors.

This revision, allows the possibility for the replacement **override **to be a macro instead, Allowing the clang-tidy check to be run on  both pre and post C++11 code, and allowing fix-its to be applied.

Reviewers: alexfh, JonasToth, hokein, Eugene.Zelenko, aaron.ballman

Reviewed By: alexfh, JonasToth

Subscribers: lewmpk, malcolm.parsons, jdoerfert, xazax.hun, cfe-commits, llvm-commits

Tags: #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D57087

llvm-svn: 355132
2019-02-28 20:00:48 +00:00
Jonas Toth da666233fe [clang-tidy] added cppcoreguidelines-explicit-virtual-functions
Addresses the bugzilla bug . (https://bugs.llvm.org/show_bug.cgi?id=30397)
modernize-use-override suggests that destructors require the override specifier
and the CPP core guidelines do not recommend this.

Patch by lewmpk.

Differential Revision: https://reviews.llvm.org/D58731

llvm-svn: 355093
2019-02-28 14:55:12 +00:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Alexander Kornienko 0ed6c478a4 [clang-tidy] Move misc-use-override and readability-shrink-to-fit to "modernize/"
These checks are focusing on migrating the code from C++98/03 to C++11, so they
belong to the modernize module.

llvm-svn: 246437
2015-08-31 13:17:43 +00:00