tidy - bugprone-exception-copy-constructor-throws — Extra Clang Tools 22.0.0git documentation (original) (raw)

Checks whether a thrown object’s copy constructor can throw.

Exception objects are required to be copy constructible in C++. However, an exception’s copy constructor should not throw to avoid potential issues when unwinding the stack. If an exception is thrown during stack unwinding (such as from a copy constructor of an exception object), the program will terminate via std::terminate.

class SomeException { public: SomeException() = default; SomeException(const SomeException&) { /* may throw */ } };

void f() { throw SomeException(); // warning: thrown exception type's copy constructor can throw }

References¶

This check corresponds to the CERT C++ Coding Standard ruleERR60-CPP. Exception objects must be nothrow copy constructible.