Daniel Dunbar | a572887 | 2009-12-15 20:14:24 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
Douglas Gregor | 43c79c2 | 2009-12-09 00:47:37 +0000 | [diff] [blame] | 2 | |
John McCall | 1de8533 | 2011-05-11 07:19:11 +0000 | [diff] [blame] | 3 | // Reachability tests have to come first because they get suppressed |
| 4 | // if any errors have occurred. |
| 5 | namespace test5 { |
| 6 | struct A { |
| 7 | __attribute__((noreturn)) void fail(); |
| 8 | void nofail(); |
| 9 | } a; |
| 10 | |
| 11 | int &test1() { |
| 12 | a.nofail(); |
| 13 | } // expected-warning {{control reaches end of non-void function}} |
| 14 | |
| 15 | int &test2() { |
| 16 | a.fail(); |
| 17 | } |
| 18 | } |
| 19 | |
Douglas Gregor | 43c79c2 | 2009-12-09 00:47:37 +0000 | [diff] [blame] | 20 | // PR5620 |
| 21 | void f0() __attribute__((__noreturn__)); |
| 22 | void f1(void (*)()); |
| 23 | void f2() { f1(f0); } |
| 24 | |
| 25 | // Taking the address of a noreturn function |
| 26 | void test_f0a() { |
| 27 | void (*fp)() = f0; |
| 28 | void (*fp1)() __attribute__((noreturn)) = f0; |
| 29 | } |
| 30 | |
| 31 | // Taking the address of an overloaded noreturn function |
| 32 | void f0(int) __attribute__((__noreturn__)); |
| 33 | |
| 34 | void test_f0b() { |
| 35 | void (*fp)() = f0; |
| 36 | void (*fp1)() __attribute__((noreturn)) = f0; |
| 37 | } |
| 38 | |
| 39 | // No-returned function pointers |
| 40 | typedef void (* noreturn_fp)() __attribute__((noreturn)); |
| 41 | |
| 42 | void f3(noreturn_fp); // expected-note{{candidate function}} |
| 43 | |
| 44 | void test_f3() { |
| 45 | f3(f0); // okay |
| 46 | f3(f2); // expected-error{{no matching function for call}} |
| 47 | } |
Nuno Lopes | f75b830 | 2009-12-23 23:40:33 +0000 | [diff] [blame] | 48 | |
| 49 | |
| 50 | class xpto { |
Anders Carlsson | 5d1d7ae | 2010-09-03 00:25:02 +0000 | [diff] [blame] | 51 | int blah() __attribute__((noreturn)); |
Nuno Lopes | f75b830 | 2009-12-23 23:40:33 +0000 | [diff] [blame] | 52 | }; |
| 53 | |
| 54 | int xpto::blah() { |
| 55 | return 3; // expected-warning {{function 'blah' declared 'noreturn' should not return}} |
| 56 | } |
Douglas Gregor | 71074fd | 2012-09-13 21:56:43 +0000 | [diff] [blame] | 57 | |
| 58 | // PR12948 |
| 59 | |
| 60 | namespace PR12948 { |
| 61 | template<int> |
| 62 | void foo() __attribute__((__noreturn__)); |
| 63 | |
| 64 | template<int> |
| 65 | void foo() { |
| 66 | while (1) continue; |
| 67 | } |
| 68 | |
| 69 | void bar() __attribute__((__noreturn__)); |
| 70 | |
| 71 | void bar() { |
| 72 | foo<0>(); |
| 73 | } |
| 74 | |
| 75 | |
| 76 | void baz() __attribute__((__noreturn__)); |
| 77 | typedef void voidfn(); |
| 78 | voidfn baz; |
| 79 | |
| 80 | template<typename> void wibble() __attribute__((__noreturn__)); |
| 81 | template<typename> voidfn wibble; |
| 82 | } |
Douglas Gregor | 092140a | 2013-04-17 08:45:07 +0000 | [diff] [blame] | 83 | |
| 84 | // PR15291 |
| 85 | // Overload resolution per over.over should allow implicit noreturn adjustment. |
| 86 | namespace PR15291 { |
| 87 | __attribute__((noreturn)) void foo(int) {} |
| 88 | __attribute__((noreturn)) void foo(double) {} |
| 89 | |
| 90 | template <typename T> |
| 91 | __attribute__((noreturn)) void bar(T) {} |
| 92 | |
| 93 | void baz(int) {} |
| 94 | void baz(double) {} |
| 95 | |
| 96 | template <typename T> |
| 97 | void qux(T) {} |
| 98 | |
| 99 | // expected-note@+5 {{candidate function [with T = void (*)(int) __attribute__((noreturn))] not viable: no overload of 'baz' matching 'void (*)(int) __attribute__((noreturn))' for 1st argument}} |
| 100 | // expected-note@+4 {{candidate function [with T = void (*)(int) __attribute__((noreturn))] not viable: no overload of 'qux' matching 'void (*)(int) __attribute__((noreturn))' for 1st argument}} |
| 101 | // expected-note@+3 {{candidate function [with T = void (*)(int) __attribute__((noreturn))] not viable: no overload of 'bar' matching 'void (*)(int) __attribute__((noreturn))' for 1st argument}} |
| 102 | // expected-note@+2 {{candidate function [with T = void (*)(int)] not viable: no overload of 'bar' matching 'void (*)(int)' for 1st argument}} |
| 103 | // expected-note@+1 {{candidate function [with T = void (int)] not viable: no overload of 'bar' matching 'void (*)(int)' for 1st argument}} |
| 104 | template <typename T> void accept_T(T) {} |
| 105 | |
| 106 | // expected-note@+1 {{candidate function not viable: no overload of 'bar' matching 'void (*)(int)' for 1st argument}} |
| 107 | void accept_fptr(void (*f)(int)) { |
| 108 | f(42); |
| 109 | } |
| 110 | |
| 111 | // expected-note@+2 {{candidate function not viable: no overload of 'baz' matching 'void (*)(int) __attribute__((noreturn))' for 1st argument}} |
| 112 | // expected-note@+1 {{candidate function not viable: no overload of 'qux' matching 'void (*)(int) __attribute__((noreturn))' for 1st argument}} |
| 113 | void accept_noreturn_fptr(void __attribute__((noreturn)) (*f)(int)) { |
| 114 | f(42); |
| 115 | } |
| 116 | |
| 117 | typedef void (*fptr_t)(int); |
| 118 | typedef void __attribute__((noreturn)) (*fptr_noreturn_t)(int); |
| 119 | |
| 120 | // expected-note@+1 {{candidate function not viable: no overload of 'bar' matching 'fptr_t' (aka 'void (*)(int)') for 1st argument}} |
| 121 | void accept_fptr_t(fptr_t f) { |
| 122 | f(42); |
| 123 | } |
| 124 | |
| 125 | // expected-note@+2 {{candidate function not viable: no overload of 'baz' matching 'fptr_noreturn_t' (aka 'void (*)(int) __attribute__((noreturn))') for 1st argument}} |
| 126 | // expected-note@+1 {{candidate function not viable: no overload of 'qux' matching 'fptr_noreturn_t' (aka 'void (*)(int) __attribute__((noreturn))') for 1st argument}} |
| 127 | void accept_fptr_noreturn_t(fptr_noreturn_t f) { |
| 128 | f(42); |
| 129 | } |
| 130 | |
| 131 | // Stripping noreturn should work if everything else is correct. |
| 132 | void strip_noreturn() { |
| 133 | accept_fptr(foo); |
| 134 | accept_fptr(bar<int>); |
| 135 | accept_fptr(bar<double>); // expected-error {{no matching function for call to 'accept_fptr'}} |
| 136 | |
| 137 | accept_fptr_t(foo); |
| 138 | accept_fptr_t(bar<int>); |
| 139 | accept_fptr_t(bar<double>); // expected-error {{no matching function for call to 'accept_fptr_t'}} |
| 140 | |
| 141 | accept_T<void __attribute__((noreturn)) (*)(int)>(foo); |
| 142 | accept_T<void __attribute__((noreturn)) (*)(int)>(bar<int>); |
| 143 | accept_T<void __attribute__((noreturn)) (*)(int)>(bar<double>); // expected-error {{no matching function for call to 'accept_T'}} |
| 144 | |
| 145 | accept_T<void (*)(int)>(foo); |
| 146 | accept_T<void (*)(int)>(bar<int>); |
| 147 | accept_T<void (*)(int)>(bar<double>); // expected-error {{no matching function for call to 'accept_T'}} |
| 148 | |
| 149 | accept_T<void (int)>(foo); |
| 150 | accept_T<void (int)>(bar<int>); |
| 151 | accept_T<void (int)>(bar<double>); // expected-error {{no matching function for call to 'accept_T'}} |
| 152 | } |
| 153 | |
| 154 | // Introducing noreturn should not work. |
| 155 | void introduce_noreturn() { |
| 156 | accept_noreturn_fptr(baz); // expected-error {{no matching function for call to 'accept_noreturn_fptr'}} |
| 157 | accept_noreturn_fptr(qux<int>); // expected-error {{no matching function for call to 'accept_noreturn_fptr'}} |
| 158 | |
| 159 | accept_fptr_noreturn_t(baz); // expected-error {{no matching function for call to 'accept_fptr_noreturn_t'}} |
| 160 | accept_fptr_noreturn_t(qux<int>); // expected-error {{no matching function for call to 'accept_fptr_noreturn_t'}} |
| 161 | |
| 162 | accept_T<void __attribute__((noreturn)) (*)(int)>(baz); // expected-error {{no matching function for call to 'accept_T'}} |
| 163 | accept_T<void __attribute__((noreturn)) (*)(int)>(qux<int>); // expected-error {{no matching function for call to 'accept_T'}} |
| 164 | } |
| 165 | } |