46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
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// RUN: %clang_cc1 -fsyntax-only -Wnonnull -Wnullability %s -verify
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// rdar://19160762
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#if __has_feature(nullability)
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#else
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# error nullability feature should be defined
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#endif
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int * _Nullable foo(int * _Nonnull x);
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int *_Nonnull ret_nonnull();
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int *foo(int *x) {
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return 0;
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}
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int * _Nullable foo1(int * _Nonnull x); // expected-note {{previous declaration is here}}
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int *foo1(int * _Nullable x) { // expected-warning {{nullability specifier '_Nullable' conflicts with existing specifier '_Nonnull'}}
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return 0;
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}
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int * _Nullable foo2(int * _Nonnull x);
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int *foo2(int * _Nonnull x) {
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return 0;
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}
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int * _Nullable foo3(int * _Nullable x); // expected-note {{previous declaration is here}}
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int *foo3(int * _Nonnull x) { // expected-warning {{nullability specifier '_Nonnull' conflicts with existing specifier '_Nullable'}}
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return 0;
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}
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int * ret_nonnull() {
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return 0; // expected-warning {{null returned from function that requires a non-null return value}}
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}
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#define SAFE_CALL(X) if (X) foo(X)
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int main () {
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foo(0); // expected-warning {{null passed to a callee that requires a non-null argument}}
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(void)sizeof(foo(0)); // expect no diagnostic in unevaluated context.
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SAFE_CALL(0); // expect no diagnostic for unreachable code.
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}
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