Closed
Description
Clang version is
Ubuntu clang version 17.0.0 (++20230724042330+c48ed93cf8c9-1~exp1~20230724042441.1077)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
The following example produces the bug. It compiles fine with clang++ -std=c++23 test.cpp -o test
#include <iostream>
#include <ranges>
int main()
{
const int MAGIC {5};
for (auto i : std::ranges::views::iota(0) | std::ranges::views::take(MAGIC))
{
std::cout << i << '\n';
}
return 0;
}clangd however produces this diagnostic for line 2 (#include <ranges>)
Included header ranges is not used directly (fix available) (clangd unused-includes)
──────────────────────────────────────────────────────────────────────────────
https://clangd.llvm.org/guides/include-cleaner
The suggested "fix" is to delete the line, which causes the program to not compile anymore.
Since is a standard library feature, I don't think any of the solutions outlined in the provided link are particularly doable, like adding // IWYU comments to the ranges header file. A workaround would be to include an exception for the ranges header in the configuration file, but trying to add that, I get this error:
Property MissingIncludes is not allowed. (yaml-schema: diagnostics)
Property Includes is not allowed. (yaml-schema: diagnostics)
for this configuration
Diagnostics:
UnusedIncludes: Strict
MissingIncludes: Strict
Includes:
IgnoreHeader: ranges\.h
ClangTidy:
Add: [
# ...
]
Remove: [
# ...
]
CheckOptions:
# ...And adding // IWYU pragma: keep doesn't work either.
