builtins.c revision a5728872c7702ddd09537c95bc3cbd20e1f2fb09 
1// RUN: %clang_cc1 %s -fsyntax-only -verify -pedantic -triple=i686-apple-darwin9
2// This test needs to set the target because it uses __builtin_ia32_vec_ext_v4si
3
4int test1(float a, int b) {
5  return __builtin_isless(a, b);
6}
7int test2(int a, int b) {
8  return __builtin_islessequal(a, b);  // expected-error {{floating point type}}
9}
10
11int test3(double a, float b) {
12  return __builtin_isless(a, b);
13}
14int test4(int* a, double b) {
15  return __builtin_islessequal(a, b);  // expected-error {{floating point type}}
16}
17
18int test5(float a, long double b) {
19  return __builtin_isless(a, b, b);  // expected-error {{too many arguments}}
20}
21int test6(float a, long double b) {
22  return __builtin_islessequal(a);  // expected-error {{too few arguments}}
23}
24
25
26#define CFSTR __builtin___CFStringMakeConstantString
27void test7() {
28  CFSTR("\242");
29  CFSTR("\0"); // expected-warning {{ CFString literal contains NUL character }}
30  CFSTR(242); // expected-error {{ CFString literal is not a string constant }} expected-warning {{incompatible integer to pointer conversion}}
31  CFSTR("foo", "bar"); // expected-error {{too many arguments to function call}}
32}
33
34
35// atomics.
36
37void test9(short v) {
38  unsigned i, old;
39
40  old = __sync_fetch_and_add();  // expected-error {{too few arguments to function call}}
41  old = __sync_fetch_and_add(&old);  // expected-error {{too few arguments to function call}}
42  old = __sync_fetch_and_add((int**)0, 42i); // expected-warning {{imaginary constants are an extension}}
43}
44
45
46// rdar://7236819
47void test10(void) __attribute__((noreturn));
48
49void test10(void) {
50  __asm__("int3");
51  __builtin_unreachable();
52
53  // No warning about falling off the end of a noreturn function.
54}
55
56void test11(int X) {
57  switch (X) {
58  case __builtin_eh_return_data_regno(0):  // constant foldable.
59    break;
60  }
61
62  __builtin_eh_return_data_regno(X);  // expected-error {{not an integer constant expression}}
63}
64
65// PR5062
66void test12(void) __attribute__((__noreturn__));
67void test12(void) {
68  __builtin_trap();  // no warning because trap is noreturn.
69}
70
71void test_unknown_builtin(int a, int b) {
72  __builtin_foo(a, b); // expected-error{{use of unknown builtin}}
73}
74