1 // RUN: %clang %s -ffreestanding -fsyntax-only -Xclang -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 // __builtin_constant_p as the condition of ?: allows arbitrary foldable
15 // constants to be transmogrified into i-c-e's.
16 char b[__builtin_constant_p((int)(1.0+2.0)) ? (int)(1.0+2.0) : -1];
17
18 struct c {
19 int a : ( // expected-error {{expression is not an integer constant expression}}
20 __builtin_constant_p((int)(1.0+2.0)) ? (int)(1.0+
21 expr // expected-note {{subexpression not valid in an integer constant expression}}
22 ) : -1);
23 };
24
25
26
27
test1(int n,int * p)28 void test1(int n, int* p) { *(n ? p : (void *)(7-7)) = 1; }
test2(int n,int * p)29 void test2(int n, int* p) { *(n ? p : (void *)0) = 1; }
30
31
32
33 char array[1024/(sizeof (long))];
34
35 int x['\xBb' == (char) 187 ? 1: -1];
36
37 // PR1992
func(int x)38 void func(int x)
39 {
40 switch (x) {
41 case sizeof("abc"): break;
42 case sizeof("loooong"): func(4);
43 case sizeof("\ploooong"): func(4);
44 }
45 }
46
47
48 // rdar://4213768
49 int expr;
50 char y[__builtin_constant_p(expr) ? -1 : 1];
51 char z[__builtin_constant_p(4) ? 1 : -1];
52
53 // Comma tests
54 int comma1[0?1,2:3]; // expected-warning {{expression result unused}}
55 int comma2[1||(1,2)]; // expected-warning {{expression result unused}} \
56 // expected-warning {{use of logical || with constant operand}}
57 int comma3[(1,2)]; // expected-warning {{size of static array must be an integer constant expression}} \
58 // expected-warning {{expression result unused}}
59
60 // Pointer + __builtin_constant_p
61 char pbcp[__builtin_constant_p(4) ? (intptr_t)&expr : 0]; // expected-error {{variable length array declaration not allowed at file scope}}
62
63 int illegaldiv1a[1 || 1/0]; // expected-warning {{division by zero is undefined}}
64 int illegaldiv1b[1 && 1/0]; // expected-warning {{division by zero is undefined}} expected-error{{variable length array declaration not allowed at file scope}}
65
66 int illegaldiv2[1/0]; // expected-error {{variable length array declaration not allowed at file scope}} \
67 // expected-warning {{division by zero is undefined}}
68 int illegaldiv3[INT_MIN / -1]; // expected-error {{variable length array declaration not allowed at file scope}}
69 // PR9262
70 int illegaldiv4[0 / (1 / 0)]; // expected-warning {{division by zero is undefined}} expected-error {{variable length array declaration not allowed at file scope}}
71
72 int chooseexpr[__builtin_choose_expr(1, 1, expr)];
73 int realop[(__real__ 4) == 4 ? 1 : -1];
74 int imagop[(__imag__ 4) == 0 ? 1 : -1];
75