1 // RUN: %clang_cc1 %s -ffreestanding -Wno-int-to-pointer-cast -fsyntax-only -verify -pedantic -fpascal-strings -std=c99
2
3 #include <stdint.h>
4 #include <limits.h>
5
a()6 int a() {int p; *(1 ? &p : (void*)(0 && (a(),1))) = 10;} // expected-error {{incomplete type 'void' is not assignable}}
7
8 // rdar://6091492 - ?: with __builtin_constant_p as the operand is an i-c-e.
9 int expr;
10 char w[__builtin_constant_p(expr) ? expr : 1];
11
12 char v[sizeof(__builtin_constant_p(0)) == sizeof(int) ? 1 : -1];
13
14 int implicitConversion = 1.0;
15 char floatArith[(int)(1.0+2.0)]; // expected-warning {{must be an integer constant expression}}
16
17 // __builtin_constant_p as the condition of ?: allows arbitrary foldable
18 // constants to be transmogrified into i-c-e's.
19 char b[__builtin_constant_p((int)(1.0+2.0)) ? (int)(1.0+2.0) : -1];
20
21 struct c {
22 int a : (
23 __builtin_constant_p((int)(1.0+2.0)) ? (int)(1.0+
24 expr // expected-error {{expression is not an integer constant expression}}
25 ) : -1);
26 };
27
28
29
30
test1(int n,int * p)31 void test1(int n, int* p) { *(n ? p : (void *)(7-7)) = 1; }
test2(int n,int * p)32 void test2(int n, int* p) { *(n ? p : (void *)0) = 1; }
33
34
35
36 char array[1024/(sizeof (long))];
37
38 int x['\xBb' == (char) 187 ? 1: -1];
39
40 // PR1992
func(int x)41 void func(int x)
42 {
43 switch (x) {
44 case sizeof("abc"): break;
45 case sizeof("loooong"): func(4);
46 case sizeof("\ploooong"): func(4);
47 }
48 }
49
50
51 // rdar://4213768
52 int expr;
53 char y[__builtin_constant_p(expr) ? -1 : 1];
54 char z[__builtin_constant_p(4) ? 1 : -1];
55
56 // Comma tests
57 int comma1[0?1,2:3];
58 int comma2[1||(1,2)]; // expected-warning {{use of logical '||' with constant operand}} \
59 // expected-note {{use '|' for a bitwise operation}}
60 int comma3[(1,2)]; // expected-warning {{size of static array must be an integer constant expression}}
61
62 // Pointer + __builtin_constant_p
63 char pbcp[__builtin_constant_p(4) ? (intptr_t)&expr : 0]; // expected-error {{variable length array declaration not allowed at file scope}}
64
65 int illegaldiv1a[1 || 1/0];
66 int illegaldiv1b[1 && 1/0]; //expected-error{{variable length array declaration not allowed at file scope}}
67
68 int illegaldiv2[1/0]; // expected-error {{variable length array declaration not allowed at file scope}}
69 int illegaldiv3[INT_MIN / -1]; // expected-error {{variable length array declaration not allowed at file scope}}
70 // PR9262
71 int illegaldiv4[0 / (1 / 0)]; // expected-error {{variable length array declaration not allowed at file scope}}
72
73 int chooseexpr[__builtin_choose_expr(1, 1, expr)];
74 int realop[(__real__ 4) == 4 ? 1 : -1];
75 int imagop[(__imag__ 4) == 0 ? 1 : -1];
76
77 int *PR14729 = 0 ?: 1/0; // expected-error {{not a compile-time constant}} expected-warning 3{{}}
78