1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2
3 #if __has_feature(__builtin_add_overflow)
4 #warning defined as expected
5 // expected-warning@-1 {{defined as expected}}
6 #endif
7
test(void)8 void test(void) {
9 unsigned r;
10 const char * c;
11 float f;
12 const unsigned q;
13
14 __builtin_add_overflow(); // expected-error {{too few arguments to function call, expected 3, have 0}}
15 __builtin_add_overflow(1, 1, 1, 1); // expected-error {{too many arguments to function call, expected 3, have 4}}
16
17 __builtin_add_overflow(c, 1, &r); // expected-error {{operand argument to overflow builtin must be an integer ('const char *' invalid)}}
18 __builtin_add_overflow(1, c, &r); // expected-error {{operand argument to overflow builtin must be an integer ('const char *' invalid)}}
19 __builtin_add_overflow(1, 1, 3); // expected-error {{result argument to overflow builtin must be a pointer to a non-const integer ('int' invalid)}}
20 __builtin_add_overflow(1, 1, &f); // expected-error {{result argument to overflow builtin must be a pointer to a non-const integer ('float *' invalid)}}
21 __builtin_add_overflow(1, 1, &q); // expected-error {{result argument to overflow builtin must be a pointer to a non-const integer ('const unsigned int *' invalid)}}
22
23 {
24 _ExtInt(128) x = 1;
25 _ExtInt(128) y = 1;
26 _ExtInt(128) result;
27 _Bool status = __builtin_mul_overflow(x, y, &result); // expect ok
28 }
29 {
30 unsigned _ExtInt(129) x = 1;
31 unsigned _ExtInt(129) y = 1;
32 unsigned _ExtInt(129) result;
33 _Bool status = __builtin_mul_overflow(x, y, &result); // expect ok
34 }
35 {
36 _ExtInt(129) x = 1;
37 _ExtInt(129) y = 1;
38 _ExtInt(129) result;
39 _Bool status = __builtin_mul_overflow(x, y, &result); // expected-error {{__builtin_mul_overflow does not support signed _ExtInt operands of more than 128 bits}}
40 }
41 }
42