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GCC 12.1.0 scenarios to Compile C++ Code with Template Specialization and `-std=c++17`

๐Ÿ‘€ Views: 60 ๐Ÿ’ฌ Answers: 1 ๐Ÿ“… Created: 2025-06-07
gcc c++ template compilation c++17 C++

I'm working with a strange compilation behavior when trying to use template specialization with GCC 12.1.0... My code is designed to handle different data types with a template class, but when I try to compile it with the `-std=c++17` flag, I get the following behavior: ``` behavior: specialization of โ€˜template<class T> class MyClassโ€™ does not match any template declaration ``` Here's a simplified version of my code: ```cpp template<typename T> class MyClass { public: void doSomething() { std::cout << "Generic implementation" << std::endl; } }; // Specialization for int type template<> class MyClass<int> { public: void doSomething() { std::cout << "Specialized implementation for int" << std::endl; } }; int main() { MyClass<float> obj1; obj1.doSomething(); MyClass<int> obj2; obj2.doSomething(); return 0; } ``` I've tried different variations of the template specialization and even removed the `-std=c++17` flag to see if it would compile under `-std=c++11`, but I still get the same behavior. I also verified that the type trait library is included, as I believe it might be somehow related to my specializations. Interestingly, if I remove the specialization for `int`, the generic version compiles without scenario. My IDE suggests that there might be a question with name mangling or the way the compiler is handling template specializations. I would appreciate any insights or solutions to resolve this scenario, as I need to leverage template specialization for my project. This is part of a larger CLI tool I'm building. Am I missing something obvious? For context: I'm using C++ on Ubuntu.