condition.cpp revision 26b45d86085a125af036dbcf85dad3087b664ab2 
1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3void test() {
4  int x;
5  if (x) ++x;
6  if (int x=0) ++x;
7
8  typedef int arr[10];
9  while (arr x=0) ; // expected-error {{an array type is not allowed here}} expected-error {{array initializer must be an initializer list}}
10  while (int f()=0) ; // expected-error {{a function type is not allowed here}}
11
12  struct S {} s;
13  if (s) ++x; // expected-error {{value of type 'struct S' is not contextually convertible to 'bool'}}
14  while (struct S x=s) ; // expected-error {{value of type 'struct S' is not contextually convertible to 'bool'}}
15  do ; while (s); // expected-error {{value of type 'struct S' is not contextually convertible to 'bool'}}
16  for (;s;) ; // expected-error {{value of type 'struct S' is not contextually convertible to 'bool'}}
17  switch (s) {} // expected-error {{statement requires expression of integer type ('struct S' invalid)}}
18
19  while (struct NewS *x=0) ;
20  while (struct S {} *x=0) ; // expected-error {{types may not be defined in conditions}}
21  while (struct {} *x=0) ; // expected-error {{types may not be defined in conditions}}
22  switch (enum {E} x=0) ; // expected-error {{types may not be defined in conditions}} expected-error {{cannot initialize}} \
23  // expected-warning{{enumeration value 'E' not handled in switch}}
24
25  if (int x=0) { // expected-note 2 {{previous definition is here}}
26    int x;  // expected-error {{redefinition of 'x'}}
27  }
28  else
29    int x;  // expected-error {{redefinition of 'x'}}
30  while (int x=0) int x; // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}}
31  while (int x=0) { int x; } // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}}
32  for (int x; int x=0; ) ; // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}}
33  for (int x; ; ) int x; // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}}
34  for (; int x=0; ) int x; // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}}
35  for (; int x=0; ) { int x; } // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}}
36  switch (int x=0) { default: int x; } // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}}
37}
38
39int* get_int_ptr();
40
41void test2() {
42  float *ip;
43  if (int *ip = ip) {
44  }
45}
46
47// Make sure we do function/array decay.
48void test3() {
49  if ("help")
50    (void) 0;
51
52  if (test3) // expected-warning {{address of function 'test3' will always evaluate to 'true'}}
53    (void) 0;
54}
55
56void test4(bool (&x)(void)) {
57  while (x);
58}
59