I have updated XCode(v. 16.0) and made sure the xcode command line tools (xcode-select version 2409) are updated. I have installed the C/C++ VS Code extension v.1.21.6 My compiler path is set to /u...

This code compiles on gcc and msvc but not with clang from C++20 on: #include <type_traits> class IBase { protected: IBase() noexcept = default; public: virtual ~IBase() noexcept = defa...

I have a comment that ends with backslash. Something like ... // use \ .. Clang(++) warned me, that this is multi-line comment warning: multi-line // comment [-Wcomment] // use \ ^ So I t...

I am working on a C++ project on my Mac running El Capitan and I get this error even after installing openssl with Homebrew: g++ -Wall -g -std=c++11 -I../libSocket/src -I../libData/src -c src/fssl...

According to the thread-sanitizer docs: ThreadSanitizer uses more real memory than a native run. At the default settings the memory overhead is 5x plus 1Mb per each thread. Settings with 3x (les...

Q: Is there a way to speed up clang++ STD Library fstreams? (And does anybody know why it is so much slower than g++?) I am trying to process very large (many GBs) binary data files and was surpri...

Here is an example: struct TestClass { void testFunction() const {} static TestClass* ptr_; constexpr static auto funcPtr = +[](){ ptr_->testFunction(); }; }; TestClass* TestClass::ptr_ = ne...

I'm trying to wrap a Python lib around a C++ lib and distutils is failing for me on OS X. Here are the relevant lines from my setup.py: if sys.platform.startswith("darwin"): extra_compile_args_se...

getting this error on flutter run for a linux desktop application Running "flutter pub get" in proj... 5.3s Launching lib/main.dart on Linux in debug mode... CMake Error at /usr/share/cma...

Pretty much what the title says, i need a way to shift/shuffle the positions of all elements in a 256-avx-register register by N places. all i have found about this uses 32 or 64 bit values (__buil...

I wrote the following simple C++ program: #include <iostream> using namespace std; int main() { cout << "Hello, World" << endl; return 0; } When I compile this with g++, it...

I was trying to play around with the new parallel library features proposed in the C++17 standard, but I couldn't get it to work. I tried compiling with the up-to-date versions of g++ 8.1.1 and cla...

I have the following code #include <iostream> void foo(const int* const &i_p) { std::cout << &i_p << std::endl; } int main () { int i = 10; int* i_p = &i; std::...

I have a template class with a private constructor which is to be friends of every typed instance of the class. The following compiles under g++ 11.4.0 but fails under clang++ version 14.0.0-1ubunt...

UPDATE: I've written a detailed tutorial that incorporates the top two answers on this question: http://blog.johannesmp.com/2015/09/01/installing-clang-on-windows-pt1/ TL;DR On Windows, Given the...

I want to use std::span as a template template argument to a function. gcc seems to accept the following code, but clang rejects. #include <iostream> #include <span> #include <vector...

I'm using the following program: In the main function, I want to print the address of the poll_timer function. The program compiles and runs successfully with clang but not with GCC. I get the foll...

Consider the following functions: static inline float Eps(const float x) { const float eps = std::numeric_limits<float>::epsilon(); return (1.0f + eps) * x - x; } float Eps1() { return Ep...

I am unable to build a simple hello world application using clang-6.0 on bionic beaver, the build command fails with below error. clang++-6.0 -std=c++17 -stdlib=libc++ hello.cc -o hello /usr/bi...

What is the purpose of the -Wlifetime compile flag in clang? The information I found on the Internet about it are very vague. Is this any noticeable feature?

(Ubuntu 16.04.1) By default on 16.04.1 clang is picking the gcc tool chain for 5.4. Unfortunately I have a library that requires pre-5.0 ABI and I do NOT have access to the source, nor has the imp...

I'm trying to set up clang-tidy for a project. I'd like to be able to have clean output, and encourage the use of -fix mode where possible. However, there are individual cases where an exception is...

thread_local int* tls = nullptr; // using libcontext to jump stack. void jump_stack(); void* test() { // before jump_stack, assume we are at thread 1. int *cur_tls = tls; jump_stack(); // after...

I've tried to compile simple hello world on Fedora 20 with Clang, and I get the following output: d.cpp:1:10: fatal error: 'iostream' file not found #include <iostream> I don't have any ide...

GCC provides a way to optimize a function/section of code selectively with fast-math using attributes. Is there a way to enable the same in Clang with pragmas/attributes? I understand Clang provide...