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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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How to prevent incorrect clang-tidy:readability-redundant-string-cstr detection?

Here is the typical (pseudo) code I wish to handle in clang-tidy (eg also here) for conveying an optionally null terminated fixed size buffer to std::string: % cat str.cc #include #include // read byte buffer from file, at most…
malat
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Different clang-tidy-17 behavior locally and in CI

The problem I'm running clang-tidy on Ubuntu jammy locally and in GitHub Actions. The problem is that I get different behavior in these environments for the following code, where MyType is trivially-copyable: void MyClass::setField(MyType value) { …
Eyjafl
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Why is clang-tidy produces "narrowing conversion" for this C99 program?

Why does the 2nd and 3rd assignments in f2 produces this and the first doesn't? Clang-Tidy: Narrowing conversion from 'int' to signed type 'char' is implementation-defined AFAIK, according to C language specification the type of the ternary operator…
traveh
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How can I tell CMake to make clang-tidy use a different system header path?

The question is about a CMake project that uses Clang as a compiler. I am building on a Mac, using the Apple Clang that comes with XCode. Since clang-tidy is not included, I installed LLVM from homebrew just for clang-tidy, while still using the…
Alex O
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How to specify "max-loop" option for Clang Tidy?

I'm trying this, but doesn't work: $ clang-tidy --config="analyzer-max-loop: 10" a.cpp -- :1:1: error: unknown key 'analyzer-max-loop' analyzer-max-loop: 10 ^~~~~~~~~~~~~~~~~ Error: invalid configuration specified. Invalid…
yegor256
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How to check naming Convention for static global variables in C using clang-tidy?

I'm trying to set up clang-tidy to check the right naming conventions for global variables. I'd like it to be able to distinguish between global static and global non-static variables. int globalNonStatic = 1; /* Should be camelBack */ static int…
Bavo Van Achte
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Is clang-tidy backward compatible?

Let's assume we compose .clang-tidy yaml file on version X of clang-tidy. Should we synchronize this X version across all team members and CI? If someone update his clang-tidy version to more abvanced, will he get different diagnostics with the same…
Aleksandr Serov
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How can I tell VS Code Cpptools' clang-tidy support to use the compile_commands.json generated with CMake?

I have an existing cross-compilation build that uses Yocto and CMake. I've added: set(CMAKE_EXPORT_COMPILE_COMMANDS ON) to CMakeLists.txt to generate compile_commands.json as part of my build. How can I tell VSCode's clang-tidy support to use this…
parsley72
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How to supress clang-tidy warnings from an upstream library in cmake

I am using CMake as my build system generator. I want to use spdlog and clang-tidy. I add spdlog to my project_packages like this: find_package("spdlog" REQUIRED) target_link_libraries("project_packages" INTERFACE "spdlog::spdlog") I set up…
Brandon
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Bug in QTCreator 9.01 with C++ using clang-tidy and fixits

In an experiment with QtCreator 9.01 (windows 10), I encounter a bug when I unleash clang-tidy with the "performance-unnecessary-value-param"-check on a larger C++ code base ( > 700 files). It finds about 300 cases and I want to fix all at once, so…
SoulfreezerXP
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How can I get a single cppcheck / clang-tidy result report file for all modules in my project?

in my project I have a multiple modules and I want to integrate cppcheck or clang-tidy with cmake. The problem is that in case of integration mentioned tools in cmake and perform static analysis I get report only for last checked module. Is there a…
emes9
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How to get warning about NullDereference with clang analyzer if the a _Nullable argument is used in the function

I would like to detect NullDereference error by adding a _Nullable to my function. I wrote my_function(); It is a function will lead to NullDerenference error if the ptr is NULL. To give a hint to the clang analyzer, I use _Nullable ptr as my…
prgbenz
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argument unused during compilation: '-mcpu=cortex-m7' when using arm-none-eabi-g++ with clang-tidy

I am using CMake to run clang-tidy while compiling my embedded target. if(CLANG_TIDY) set(CMAKE_CXX_CLANG_TIDY "clang-tidy") endif() CMake sets the correct driver mode automatically: --tidy="clang-tidy;--extra-arg-before=--driver-mode=g++" But…
elhe
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Clang-tidy change check options for clang-analyzer-optin.cplusplus.UninitializedObject

I am trying to change the Pedantic option in clang-analyzer-optin.cplusplus.UninitializedObject by create a .clang-tidy file optin-cplusplus-uninitializedobject here is the YAML version of .clang-tidy config-file: Checks: > …
Am_A
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clang-tidy default checks (unknown origin)

My clang-tidy seems to have some hardcoded options I cannot get rid of, without any .clang-file (as seen in --explain-config below): clang-tidy --checks=-* --dump-config --- Checks: 'clang-diagnostic-*,clang-analyzer-*,-*' WarningsAsErrors:…
Liviu
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