//===--------------------- inherited_exception.cpp ------------------------===// // // The LLVM Compiler Infrastructure // // This file is dual licensed under the MIT and the University of Illinois Open // Source Licenses. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This test case checks specifically the cases under C++ ABI 15.3.1, and 15.3.2 // // C++ ABI 15.3: // A handler is a match for an exception object of type E if // / * The handler is of type cv T or cv T& and E and T are the same type \ // | (ignoring the top-level cv-qualifiers), or | // | * the handler is of type cv T or cv T& and T is an unambiguous base | // \ class of E, or / // * the handler is of type cv1 T* cv2 and E is a pointer type that can // be converted to the type of the handler by either or both of // o a standard pointer conversion (4.10 [conv.ptr]) not involving // conversions to private or protected or ambiguous classes // o a qualification conversion // * the handler is a pointer or pointer to member type and E is // std::nullptr_t // //===----------------------------------------------------------------------===// // UNSUPPORTED: libcxxabi-no-exceptions // Clang emits warnings about exceptions of type 'Child' being caught by // an earlier handler of type 'Base'. Congrats clang, you've just // diagnosed the behavior under test. #if defined(__clang__) #pragma clang diagnostic ignored "-Wexceptions" #endif #include struct Base { int b1; }; struct Base2 { int b2; }; struct Child : public Base, public Base2 { int c; }; void f1() { Child child; child.b1 = 10; child.b2 = 11; child.c = 12; throw child; } void f2() { Child child; child.b1 = 10; child.b2 = 11; child.c = 12; throw static_cast(child); } void f3() { static Child child; child.b1 = 10; child.b2 = 11; child.c = 12; throw static_cast(&child); } int main() { try { f1(); assert(false); } catch (const Child& c) { assert(true); } catch (const Base& b) { assert(false); } catch (...) { assert(false); } try { f1(); assert(false); } catch (const Base& c) { assert(true); } catch (const Child& b) { assert(false); } catch (...) { assert(false); } try { f1(); assert(false); } catch (const Base2& c) { assert(true); } catch (const Child& b) { assert(false); } catch (...) { assert(false); } try { f2(); assert(false); } catch (const Child& c) { assert(false); } catch (const Base& b) { assert(false); } catch (const Base2& b) { assert(true); } catch (...) { assert(false); } try { f3(); assert(false); } catch (const Base* c) { assert(false); } catch (const Child* b) { assert(false); } catch (const Base2* c) { assert(true); } catch (...) { assert(false); } }