llvm-project/clang/test/SemaCXX/attr-unavailable.cpp

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// RUN: clang-cc -fsyntax-only -verify %s
int &foo(int);
double &foo(double);
void foo(...) __attribute__((__unavailable__)); // expected-note {{candidate function}} \
// expected-note{{function has been explicitly marked unavailable here}}
void bar(...) __attribute__((__unavailable__)); // expected-note 2{{explicitly marked unavailable}}
void test_foo(short* sp) {
int &ir = foo(1);
double &dr = foo(1.0);
foo(sp); // expected-error{{call to unavailable function 'foo'}}
void (*fp)(...) = &bar; // expected-warning{{'bar' is unavailable}}
void (*fp2)(...) = bar; // expected-warning{{'bar' is unavailable}}
int &(*fp3)(int) = foo;
void (*fp4)(...) = foo; // expected-warning{{'foo' is unavailable}}
}