1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 void 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}} expected-warning {{switch statement has empty body}} \ 24 // expected-note{{put the semicolon on a separate line}} 25 26 if (int x=0) { // expected-note 2 {{previous definition is here}} 27 int x; // expected-error {{redefinition of 'x'}} 28 } 29 else 30 int x; // expected-error {{redefinition of 'x'}} 31 while (int x=0) int x; // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}} 32 while (int x=0) { int x; } // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}} 33 for (int x; int x=0; ) ; // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}} 34 for (int x; ; ) 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 for (; int x=0; ) { int x; } // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}} 37 switch (int x=0) { default: int x; } // expected-error {{redefinition of 'x'}} expected-note {{previous definition is here}} 38 } 39 40 int* get_int_ptr(); 41 42 void test2() { 43 float *ip; 44 if (int *ip = ip) { 45 } 46 } 47 48 // Make sure we do function/array decay. 49 void test3() { 50 if ("help") 51 (void) 0; 52 53 if (test3) // expected-warning {{address of function 'test3' will always evaluate to 'true'}} \ 54 expected-note {{prefix with the address-of operator to silence this warning}} 55 (void) 0; 56 } 57 58 void test4(bool (&x)(void)) { 59 while (x); 60 } 61
