forked from OSchip/llvm-project
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
// RUN: clang -fsyntax-only %s -verify -fblocks
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typedef void (^CL)(void);
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CL foo() {
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short y;
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short (^add1)(void) = ^{ return y+1; }; // expected-warning {{incompatible block pointer types initializing 'int (^)(void)', expected 'short (^)(void)'}}
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CL X = ^{
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if (2)
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return;
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return 1; // expected-error {{void block should not return a value}}
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};
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int (^Y) (void) = ^{
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if (3)
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return 1;
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else
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return; // expected-error {{non-void block should return a value}}
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};
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char *(^Z)(void) = ^{
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if (3)
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return "";
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else
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return (char*)0;
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};
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double (^A)(void) = ^ { // expected-warning {{incompatible block pointer types initializing 'float (^)(void)', expected 'double (^)(void)'}}
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if (1)
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return (float)1.0;
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else
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if (2)
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return (double)2.0;
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return 1;
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};
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char *(^B)(void) = ^{
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if (3)
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return "";
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else
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return 2; // expected-warning {{incompatible integer to pointer conversion returning 'int', expected 'char *'}}
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};
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return ^{ return 1; }; // expected-warning {{incompatible block pointer types returning 'int (^)(void)', expected 'CL'}} expected-error {{returning block that lives on the local stack}}
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}
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typedef int (^CL2)(void);
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CL2 foo2() {
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return ^{ return 1; }; // expected-error {{returning block that lives on the local stack}}
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}
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typedef unsigned int * uintptr_t;
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typedef char Boolean;
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typedef int CFBasicHash;
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#define INVOKE_CALLBACK2(P, A, B) (P)(A, B)
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typedef struct {
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Boolean (^isEqual)(const CFBasicHash *, uintptr_t stack_value_or_key1, uintptr_t stack_value_or_key2, Boolean is_key);
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} CFBasicHashCallbacks;
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int foo3() {
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CFBasicHashCallbacks cb;
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Boolean (*value_equal)(uintptr_t, uintptr_t) = 0;
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cb.isEqual = ^(const CFBasicHash *table, uintptr_t stack_value_or_key1, uintptr_t stack_value_or_key2, Boolean is_key) {
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return (Boolean)(uintptr_t)INVOKE_CALLBACK2(value_equal, (uintptr_t)stack_value_or_key1, (uintptr_t)stack_value_or_key2);
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};
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}
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static int funk(char *s) {
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if (^{} == ((void*)0))
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return 1;
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else
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return 0;
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}
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void foo4() {
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int (^xx)(const char *s) = ^(char *s) { return 1; }; // expected-warning {{incompatible block pointer types initializing 'int (^)(char *)', expected 'int (^)(char const *)'}}
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int (*yy)(const char *s) = funk; // expected-warning {{incompatible pointer types initializing 'int (char *)', expected 'int (*)(char const *)'}}
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int (^nested)(char *s) = ^(char *str) { void (^nest)(void) = ^(void) { printf("%s\n", str); }; next(); return 1; }; // expected-warning{{implicitly declaring C library function 'printf' with type 'int (char const *, ...)'}} \
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// expected-note{{please include the header <stdio.h> or explicitly provide a declaration for 'printf'}}
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}
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