Sebastian Redl | 60618fa | 2011-03-12 11:50:43 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -std=c++0x -fexceptions -fcxx-exceptions -fsyntax-only -verify %s |
| 2 | |
| 3 | // Exception specification compatibility. |
| 4 | // We test function pointers, because functions have an extra rule in p4. |
| 5 | |
| 6 | // Same type is compatible |
| 7 | extern void (*r1)() throw(int); |
| 8 | extern void (*r1)() throw(int); |
| 9 | |
| 10 | // Typedefs don't matter. |
| 11 | typedef int INT; |
| 12 | extern void (*r2)() throw(int); |
| 13 | extern void (*r2)() throw(INT); |
| 14 | |
| 15 | // Order doesn't matter. |
| 16 | extern void (*r3)() throw(int, float); |
| 17 | extern void (*r3)() throw(float, int); |
| 18 | |
| 19 | // MS throw-any spec and no spec at all are compatible |
| 20 | extern void (*r4)(); |
| 21 | extern void (*r4)() throw(...); |
| 22 | |
| 23 | // throw(X) and no spec are not compatible |
| 24 | extern void (*r5)() throw(int); // expected-note {{previous declaration}} |
| 25 | extern void (*r5)(); // expected-error {{exception specification in declaration does not match}} |
| 26 | |
| 27 | // For functions, we accept this with a warning. |
| 28 | extern void f5() throw(int); // expected-note {{previous declaration}} |
| 29 | extern void f5(); // expected-warning {{missing exception specification}} |
| 30 | |
| 31 | // Different types are not compatible. |
| 32 | extern void (*r7)() throw(int); // expected-note {{previous declaration}} |
| 33 | extern void (*r7)() throw(float); // expected-error {{exception specification in declaration does not match}} |
| 34 | |
| 35 | // Top-level const doesn't matter. |
| 36 | extern void (*r8)() throw(int); |
| 37 | extern void (*r8)() throw(const int); |
| 38 | |
| 39 | // Multiple appearances don't matter. |
| 40 | extern void (*r9)() throw(int, int); |
| 41 | extern void (*r9)() throw(int, int); |
| 42 | |
| 43 | |
| 44 | // noexcept is compatible with itself |
| 45 | extern void (*r10)() noexcept; |
| 46 | extern void (*r10)() noexcept; |
| 47 | |
| 48 | // noexcept(true) is compatible with noexcept |
| 49 | extern void (*r11)() noexcept; |
| 50 | extern void (*r11)() noexcept(true); |
| 51 | |
| 52 | // noexcept(false) isn't |
| 53 | extern void (*r12)() noexcept; // expected-note {{previous declaration}} |
| 54 | extern void (*r12)() noexcept(false); // expected-error {{does not match}} |
| 55 | |
| 56 | // The form of the boolean expression doesn't matter. |
| 57 | extern void (*r13)() noexcept(1 < 2); |
| 58 | extern void (*r13)() noexcept(2 > 1); |
| 59 | |
| 60 | // noexcept(false) is incompatible with noexcept(true) |
| 61 | extern void (*r14)() noexcept(true); // expected-note {{previous declaration}} |
| 62 | extern void (*r14)() noexcept(false); // expected-error {{does not match}} |
| 63 | |
| 64 | // noexcept(false) is compatible with itself |
| 65 | extern void (*r15)() noexcept(false); |
| 66 | extern void (*r15)() noexcept(false); |
| 67 | |
| 68 | // noexcept(false) is compatible with MS throw(...) |
| 69 | extern void (*r16)() noexcept(false); |
| 70 | extern void (*r16)() throw(...); |
| 71 | |
| 72 | // noexcept(false) is *not* compatible with no spec |
| 73 | extern void (*r17)(); // expected-note {{previous declaration}} |
| 74 | extern void (*r17)() noexcept(false); // expected-error {{does not match}} |
| 75 | |
| 76 | // except for functions |
| 77 | void f17(); |
| 78 | void f17() noexcept(false); |
| 79 | |
| 80 | // noexcept(false) is compatible with dynamic specs that throw unless |
| 81 | // CWG 1073 resolution is accepted. Clang implements it. |
| 82 | //extern void (*r18)() throw(int); |
| 83 | //extern void (*r18)() noexcept(false); |
| 84 | |
| 85 | // noexcept(true) is compatible with dynamic specs that don't throw |
| 86 | extern void (*r19)() throw(); |
| 87 | extern void (*r19)() noexcept(true); |
| 88 | |
| 89 | // The other way round doesn't work. |
| 90 | extern void (*r20)() throw(); // expected-note {{previous declaration}} |
| 91 | extern void (*r20)() noexcept(false); // expected-error {{does not match}} |
| 92 | |
| 93 | extern void (*r21)() throw(int); // expected-note {{previous declaration}} |
| 94 | extern void (*r21)() noexcept(true); // expected-error {{does not match}} |
Sebastian Redl | 99439d4 | 2011-03-15 19:52:30 +0000 | [diff] [blame] | 95 | |
| 96 | |
| 97 | // As a very special workaround, we allow operator new to match no spec |
| 98 | // with a throw(bad_alloc) spec, because C++0x makes an incompatible change |
| 99 | // here. |
Sebastian Redl | d8f2e8e | 2011-03-15 20:41:09 +0000 | [diff] [blame^] | 100 | extern "C++" { namespace std { class bad_alloc {}; } } |
Sebastian Redl | 99439d4 | 2011-03-15 19:52:30 +0000 | [diff] [blame] | 101 | void* operator new(unsigned long) throw(std::bad_alloc); |
| 102 | void* operator new(unsigned long); |
Sebastian Redl | 99439d4 | 2011-03-15 19:52:30 +0000 | [diff] [blame] | 103 | void* operator new[](unsigned long); |
Sebastian Redl | d8f2e8e | 2011-03-15 20:41:09 +0000 | [diff] [blame^] | 104 | void* operator new[](unsigned long) throw(std::bad_alloc); |
Sebastian Redl | 99439d4 | 2011-03-15 19:52:30 +0000 | [diff] [blame] | 105 | |