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Questions tagged [clang-tidy]

For questions about clang-tidy as a static analyzer and code modernization tool. For more generic questions such as compiler diagnostic messages use the clang tag.

404 questions
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Is Clang-Tidy's warning about failure to initialize all fields of an anonymous union a false positive?

I have code like the following in a C++ project: struct Foo { union { double d = 1.0; char c; }; }; When I run this through Clang-Tidy, it warns me that constructor does not initialize the field c. However, when I compile the code, I do…
user2269707
8
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2 answers

clang-tidy can't locate stdlib headers

Today I've built clang-tidy from sources, I've built it using clang++. After it has been built I've created a symlink to the executable like this: ln -s /path/to/build/bin/clang-tidy /usr/local/bin/clang-tidy Then I've tried to use clang-tidy with…
mezo
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8
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3 answers

cmake + clang_tidy - disable checking in directory

I have large project using CMake. I want to add clang_tidy-8 support with following code: set(BORG_CLANG_TIDY OFF CACHE STRING "If enabled, clang-tidy will be used. If set to 'fix', fixes will be done on source") set_property(CACHE BORG_CLANG_TIDY…
MateuszL
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8
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1 answer

clang-tidy readability-identifier-naming module does not seem to properly handle class attributes and class methods

I would like to use clang-tidy 'readability-identifier-naming' module to clean my code, but I failed to use it properly on a short example with class attribute and method. I used the following .clang-tidy file: Checks:…
devel484
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8
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3 answers

What is proper LLVM header guard style?

In clang tidy, the check [llvm-header-guard] looks for LLVM style header guards, but I can't find any examples of proper LLVM header guard style, specifically the structure of the name given to the define, the coding standards pages does not mention…
A-n-t-h-o-n-y
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8
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2 answers

How can I enable clang-tidy's "modernize" checks?

I just installed ClangOnWin,and I'm trying to get clang-tidy's "modernize" checks to work. Unfortunately, clang-tidy doesn't seem to know about them: clang-tidy -list-checks foo.cpp -- | grep modernize produces no output. The "modernize" checks are…
KnowItAllWannabe
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7
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2 answers

Disable or enable warnings for cppcheck using a configuration file

With clang-tidy static analyzer I can keep a file (.clang-tidy) in the root of the project with the warnings I want to activate or deactivate. clang-tidy will look for this file (as far I know) and use the options defined there. This saves me from…
alfC
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1 answer

clang-tidy emits warning when compiling with c++20 enabled

I recently updated my project and its CI pipelines to use C++20 features. When I changed the compiler settings to use C++20, clang-tidy started to emit the following warning (I treat them as errors) for all my checked files: error: invalid case…
wychmaster
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clang-tidy: Ignore specific folder from clang-tidy analysis

I have the following directory structure ├── .clang-format ├── .clang-tidy ├── external ├── scripts └── source For my clang tidy execution I want to only include headers from the source folder and exclude ones from external. The following setting…
user2020
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7
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2 answers

Using clang-tidy with a header only CMake project

I am working on a header only library and would like to use clang-tidy to make sure I am following the "C++ Core Guidelines" https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines No matter what I try I can't seem to get clang-tidy to work on…
tjwrona1992
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7
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1 answer

No `-line-filter` equivalent in clang-tidy config?

I want to configure my -line-filter= arguments in the .clang-tidy file instead of in a cmake source file where the command is generated. Adding a LineFilter key to the file only gets me a "unknown key" error. Is this really not supported via the…
renefritze
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7
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clang-tidy vs structured bindings

The clang-tidy packaged in ubuntu 20.04 (10.0.0) seems to be choking on a fairly simple block of code that involves structured bindings and move operations: #include #include struct T { ~T() { if(ptr != nullptr) { //…
user4442671
7
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2 answers

Disable clang-tidy warning for a specific macro

I have a macro which instantiates a global variable. And thus clang-tidy will correctly issue an "Initialization of ... with static storage duration may throw an exception which cannot be caught". Can I disable this warning on a per-macro basis?…
Johan W
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How to run clang-tidy and clazy on a qmake Qt project from cmd?

I have a few Windows projects based on qmake, and these are built daily on Jenkins. Jenkins is running on a Windows machine, and my projects build fine using a "Windows batch Command", which is pretty much the same as running a good old batch (.bat)…
FourtyTwo
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7
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3 answers

CLang-Tidy warning that rand() has limited randomness

toZero = rand() % N; This line of code is giving me Clang-Tidy: rand() has limited randomness. Why is this warning coming up? How can I fix it?
user9310391
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