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// RUN: clang-cc -fsyntax-only -verify %s -fblocks
void donotwarn();
int (^IFP) ();
int (^II) (int);
int test1() {
int (^PFR) (int) = 0; // OK
PFR = II; // OK
if (PFR == II) // OK
donotwarn();
if (PFR == IFP) // expected-error {{comparison of distinct block types}}
donotwarn();
if (PFR == (int (^) (int))IFP) // OK
donotwarn();
if (PFR == 0) // OK
donotwarn();
if (PFR) // OK
donotwarn();
if (!PFR) // OK
donotwarn();
return PFR != IFP; // expected-error {{comparison of distinct block types}}
}
int test2(double (^S)()) {
double (^I)(int) = (void*) S;
(void*)I = (void *)S; // expected-error {{assignment to cast is illegal, lvalue casts are not supported}}
void *pv = I;
pv = S;
I(1);
return (void*)I == (void *)S;
}
int^ x; // expected-error {{block pointer to non-function type is invalid}}
int^^ x1; // expected-error {{block pointer to non-function type is invalid}} expected-error {{block pointer to non-function type is invalid}}
int test3() {
char *^ y; // expected-error {{block pointer to non-function type is invalid}}
}
enum {NSBIRLazilyAllocated = 0};
int test4(int argc) { // rdar://6251437
^{
switch (argc) {
case NSBIRLazilyAllocated: // is an integer constant expression.
default:
break;
}
}();
return 0;
}
// rdar://6257721 - reference to static/global is byref by default.
static int test5g;
void test5() {
bar(^{ test5g = 1; });
}
// rdar://6405429 - __func__ in a block refers to the containing function name.
const char*test6() {
return ^{
return __func__;
} ();
}
// radr://6732116 - block comparisons
void (^g)();
int foo(void (^p)()) {
return g == p;
}
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