Open
Description
I hope this is the right channel, I'm getting incorrect behaviour from clang-tidy on code that uses ICU.
I'm using ubuntu 22.04, I've tried clang-tidy-17, clang-tidy-18 and I built one myself based on (22bc9db), the results are the same for all three.
CMakeLists.txt:
cmake_minimum_required(VERSION 3.12)
project(tidy_bug)
find_package(ICU 50 COMPONENTS uc REQUIRED)
add_library(my_lib file.cpp)
target_link_libraries(my_lib ICU::uc)
file.cpp
#include <utility>
#include <unicode/uchar.h>
#include <string_view>
bool function(std::string_view input)
{
size_t res = 0;
char const * const s = input.data();
auto const length = static_cast<int32_t>(input.size());
int32_t pos = 0;
UChar32 c;
U8_NEXT(s, pos, length, c);
return u_isWhitespace(c);
}
I'm using ICU version 70.1.
I'm building the project like this:
cmake -DCMAKE_CXX_COMPILER=clang++-18 -DCMAKE_BUILD_TYPE=Release -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCMAKE_CXX_STANDARD=20 ..
And I'm applying clang-tidy like this:
clang-tidy -p build/ --config='{"Checks": "misc-include-cleaner"}' --fix file.cpp.
The result has the includes unicode/umachine.h, unicode/utf8.h and unicode/urename.h none of which contain u_isWhitespace.