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
5
votes
2 answers
clang-tidy: Exclude specific dir from analysis
I'm using clang-tidy in a medium-size project with the following three folders:
srcA
srcB
external
I'm trying to exclude external folder from the analysis, but with no luck.
The command I'm using is:
clang-tidy $SRC -p build/…
tsarquis88
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5
votes
1 answer
Clang Tidy config format
At the moment I am using the Clang Format utility in my project. In order to share its settings in my team, I put the .clang-format configuration file in the root of the project folder, and now IDE automatically loads it when working with the…
Timur Yalymov
- 249
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5
votes
1 answer
Does clang-tidy make scan-build redundant?
I have a project that currently uses both scan-build and clang-tidy (enabled via CMake).
If I enable clang-analyzer-* in my set of clang-tidy checks, is the usage of scan-build redundant?
For reference, there is a similar question asked here about…
tbre
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- 2
5
votes
1 answer
"Potential memory leak" with std::function
Consider this example:
#include
#include
#include
#include
using closure_type = std::function;
using closure_vec = std::vector;
class callbacks {
static closure_type…
ivaigult
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5
votes
1 answer
how to use clang tidy in CMake
I would like to use CMake and clang-tidy in my project, however I see that build times are quite a bit higher when I use this in all the main cmake file:
set(CMAKE_CXX_CLANG_TIDY
clang-tidy-11;
-format-style='file';
…
Frank
- 2,446
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5
votes
0 answers
clang-tidy: getting postfix operator++ right
I have a custom forward iterator type. It declares (among other stuff) this:
Iter& operator++();
Iter operator++(int);
clang-tidy complains about cert-dcl21-cpp (Clang-Tidy: Overloaded 'operator++' returns a non-constant object instead of a…
Mischael Schill
- 71
- 3
5
votes
0 answers
Clang-Tidy is ambiguous: What should operator++(int) return?
So, I've been working on a Vector implementation for an assignment and noticed some strange Clang-Tidy suggestions while implementing the iterators.
The iterator must have an iterator& operator++() and an iterator operator++(int) overload, per the…
Raphael Tarita
- 770
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- 31
5
votes
1 answer
Why is this dangling-gsl warning invoked?
I am analyzing a codebase with clang-tidy and see a warning I do not understand. The warning is invoked by the following lines of code:
void fun(const QString& bar) {
const char* c_format = bar.toStdString().c_str();
…
fabian
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5
votes
1 answer
Can that function parameter really be pointer-to-const?
In the following C program, functions f, g, and h are essentially identical, however clang-tidy says that parameter p can be pointer-to-const in g and h (but not in f). My understanding is that p can't be pointer-to-const in any of them. Is that a…
Wolfram Rösler
- 302
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- 12
5
votes
2 answers
Understanding "'const' at top level, which may reduce code readability without improving const correctness"
Please consider the code below, in particular, observing that get_length returns const size_t.
#include
const size_t get_length(void)
{
return 123;
}
void foo(void)
{
size_t length = get_length();
length++;
…
user14222280
5
votes
1 answer
What is the meaning of the 'AnalyzeTemporaryDtors' option in clang-tidy?
The clang-tidy --dump-config command produces something like this:
---
Checks: 'clang-diagnostic-*,clang-analyzer-*'
WarningsAsErrors: ''
HeaderFilterRegex: ''
AnalyzeTemporaryDtors: false
FormatStyle: none
User: …
Daniele E. Domenichelli
- 826
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5
votes
1 answer
How can I tell clang-tidy to check for pragma once instead of llvm-style header guards?
I would like to use clan-tidy. The program should check if I do have header guards, which is why I set the flag llvm-header-guard. Unfortunately this checks if the header guards are llvm-style, which I don't want. I want to use #pragma once.
Does…
User12547645
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5
votes
1 answer
Clang AST matcher for variables compared to different variable types
I am new to clang-tidy and the following is practice so I can move to more complex matchers and tools.
Lets say we have
typedef int my_type;
void foo()
{
int x = 0;//this should be identified as need to be fixed
my_type z = 0;
…
warz
- 73
- 4
5
votes
2 answers
clang-tidy with CMake and an embedded target
The goal here to help people catch some bugs on their embedded systems when developing with C++. As part of this I'm trying to get clang-tidy to work for small embedded targets.
I'm trying setup CMake to do the following:
Run clang tidy on build;…
David Ledger
- 2,033
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5
votes
2 answers
Is the "used after it was moved [bugprone-use-after-move]" warning a real problem here?
I'm adapting the idea of the deffered ptr Herb Sutter talked about in cppcon 2016, to be able to manage external resources represented by an id in a safer way.
Therefore I created a non copy able and only movable class holding the id the resource…
t.niese
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