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35 lines
1.2 KiB
D
35 lines
1.2 KiB
D
/++
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https://issues.dlang.org/show_bug.cgi?id=21538
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TEST_OUTPUT:
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---
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fail_compilation/covariant_override.d(23): Error: function `@safe void covariant_override.CI.f(void delegate() @safe dg)` does not override any function, did you mean to override `@safe void covariant_override.I.f(void delegate() @system dg)`?
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fail_compilation/covariant_override.d(34): Error: function `@safe void covariant_override.CA.f(void delegate() @safe dg)` does not override any function, did you mean to override `@safe void covariant_override.A.f(void delegate() @system dg)`?
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fail_compilation/covariant_override.d(20): Error: class `covariant_override.CI` interface function `void f(void delegate() @system dg) @safe` is not implemented
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---
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++/
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static assert(!is(void delegate() @system : void delegate() @safe));
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static assert( is(void delegate() @safe : void delegate() @system));
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interface I
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{
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void f(void delegate() @system dg) @safe;
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}
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class CI : I
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{
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// this overrride should not be legal
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override void f(void delegate() @safe dg) @safe { }
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}
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abstract class A
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{
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void f(void delegate() @system dg) @safe;
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}
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class CA : A
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{
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// this overrride should not be legal
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override void f(void delegate() @safe dg) @safe { }
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}
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