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.
Questions tagged [clang-tidy]
404 questions
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1 answer
Clang-tidy: how to configure size_t, uintptr_t and pointers to 32-bits?
Clang-tidy is now part of the C/C++ plugin for VS Code. Earlier I were using the clang-tidy extension, and it was working fine.
The issue is that clang-tidy now treats size_t, uintptr_t and all pointers as 64-bits, and issues warnings for…
vjalle
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Is there a check in clang-tidy to reveal the most vexing parse cases?
I would like to speed up the compilation time of a legacy C++ project with millions of lines of code. I didn't find any compiler benchmarks focusing on refactoring the "most vexing parse" described by Scott Meyers…
Robert
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How can I run clang-tidy on all the cpp files in my project in a performant way?
I have a CI script that runs clang tidy on all the cpp files to ensure that all the files are written using the rules set up in the config file. Currently, I have a script that finds all the necessary files (cpp and shader files) and runs clang tidy…
Gasim
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1 answer
How to get the parent funtion name in clang-tidy ASTMatch at CallExpr Position
I add a Matcher in callExpr, Finder->addMatcher(callExpr().bind("call"), this);
In my check function, I want to get parent function name in this callexpr node, here is my checkfunction context. Parent varible always returns nullptr. How to deal with…
Langewin
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- 2
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1 answer
Understanding clang-tidy "DeadStores" and "NewDeleteLeaks" warnings
I am relatively new to c++ programming, especially when dealing with OOP and pointers.
I am trying to implement a binary search tree, and here is the code I have
struct TreeNode {
int val;
TreeNode* left;
TreeNode* right;
TreeNode() :…
Gareth Ma
- 199
- 10
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0 answers
Warnings from clang-tidy
When testing a class, clang-tidy started giving warnings like this. What are they and how to remove them?
warning: invalid configuration value '0' for option 'cppcoreguidelines-pro-bounds-constant-array-index.IncludeStyle'…
Елизавета Тараненко
- 71
- 6
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VSCode Clang-Tidy squiggling header because "__float128 is not supported on this target"
As seen in this video, the C++ Linter provided in the C/C++ extension from Microsoft (clang-tidy) in VSCode squiggles the header of the standard library, producing an irresolvable problem.
However, outside of this fact, the linter works as…
user16667377
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0 answers
CLang tidy does not recognize namespace keyword and interprets it as a variable
I am ramping up a Platform IO project. Within there I am using clang-tidy for different checks (see documentation for PIO clang-tidy here).
Given the folder structure
- .
-- include
-- src
I placed a header file in the include folder, called…
stev-e
- 436
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0
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1 answer
Integer to pointer cast pessimism optimization opportunities
The from_base function returns the memory address from the base to a selected
value in a program. I want to retrieve this value and return it in a function, however, I am getting a warning that says integer to pointer cast pessimism optimization…
Dany Gagnon
- 102
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- 9
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1 answer
Writing a specific Clang-tidy check to avoid passing an expression into std::vector::reserve()
In our codebase, we always use std::vector::reserve() to achieve higher performance. Most of the time they work well.
Also, sometimes we might pass an expression into the reserve() function.
For example,
const double length = GetLength();
const…
kaixin liu
- 89
- 8
0
votes
0 answers
clang-tidy fails with OpenCV code that compiles fine
clang-tidy fails on this simple program:
#include
int main()
{
cv::Mat m;
m.at(12, 34);
return 0;
}
when run with
clang-tidy-13 test.cpp -- -I/usr/include/opencv4…
iliis
- 878
- 8
- 19
0
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1 answer
How to change c++ code to make clang-tidy modernize-use-transparent-functors happy
We have the following c++ code using catch2 framework:
auto check2 = [](size_t exp, size_t val, auto comp) {
REQUIRE(comp(exp, val));
};
check2(10, 20, std::equal_to{});
and clang-tidy generates the following
/test_lingua.cpp:1236:36:…
user15403623
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- 3
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0 answers
Value stored to `item` during its initialization is never read in range base loop
I am trying to fix analyzer errors, but I am stuck at this error, have no idea why I am getting this error here is my code.
struct Config{
std::shared_ptr> data;
std::shared_ptr> getData(){
return data;
…
foragerDev
- 1,307
- 1
- 9
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0
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1 answer
using clang-tidy to findout all uncaught exceptions
I want to use clang-tidy to find out all uncaught exceptions by its direct or indirect caller, up to main, but this demo has no effect. Generally, I want to clang-tidy to report that the function cc is throwing an exception that not being caught by…
ddwolf
- 91
- 2
- 10
0
votes
0 answers
How can I get no-injected-class-name from clang::ParmVarDecl without using std::string operation
The parameter type is a Record and I have no idea to get the no-injected-class-name from clang::ParmVarDecl without using std::string operation.
struct A{};
void showA(const A& a) {}
I get "const struct A&" by invoking…
Gehry
- 1