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e4f6041dba
If the right-hand side (destination) of value-to-pointer conversion is incorrect e.g. base type of member is a hole, let's record a generic "invalid conversion" failure. Resolves: rdar://problem/68254165
50 lines
2.4 KiB
Swift
50 lines
2.4 KiB
Swift
// RUN: %target-typecheck-verify-swift
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func foo(_ a: [[UInt8]], _ p: [UnsafeRawPointer]) {
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foo(a, a) // expect-warning {{all paths through this function will call itself}}
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}
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// rdar://problem/44658089
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func takesPtr(_: UnsafePointer<UInt8>) {}
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func takesDoubleOptionalPtr(_ x: UnsafeRawPointer??) {}
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func takesMutableDoubleOptionalPtr(_ x: UnsafeMutableRawPointer??) {}
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func takesMutableDoubleOptionalTypedPtr(_ x: UnsafeMutablePointer<Double>??) {}
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func givesPtr(_ str: String) {
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takesPtr(UnsafePointer(str)) // expected-warning {{initialization of 'UnsafePointer<UInt8>' results in a dangling pointer}}
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// expected-note @-1 {{implicit argument conversion from 'String' to 'UnsafePointer<UInt8>' produces a pointer valid only for the duration of the call to 'init(_:)'}}
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// expected-note@-2 {{use the 'withCString' method on String in order to explicitly convert argument to pointer valid for a defined scope}}
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var i = 0
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var d = 0.0
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var arr = [1, 2, 3]
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// SR-9090: Allow double optional promotion for pointer conversions.
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takesDoubleOptionalPtr(&arr)
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takesDoubleOptionalPtr(arr)
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takesDoubleOptionalPtr(str)
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takesMutableDoubleOptionalPtr(&i)
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takesMutableDoubleOptionalPtr(&arr)
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takesMutableDoubleOptionalTypedPtr(&d)
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takesDoubleOptionalPtr(i) // expected-error {{cannot convert value of type 'Int' to expected argument type 'UnsafeRawPointer??'}}
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takesMutableDoubleOptionalPtr(arr) // expected-error {{cannot convert value of type '[Int]' to expected argument type 'UnsafeMutableRawPointer??'}}
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takesMutableDoubleOptionalTypedPtr(&i) // expected-error {{cannot convert value of type 'UnsafeMutablePointer<Int>' to expected argument type 'UnsafeMutablePointer<Double>'}}
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// expected-note@-1 {{arguments to generic parameter 'Pointee' ('Int' and 'Double') are expected to be equal}}
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}
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// SR12382
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func SR12382(_ x: UnsafeMutablePointer<Double>??) {}
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var i = 0
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SR12382(&i) // expected-error {{cannot convert value of type 'UnsafeMutablePointer<Int>' to expected argument type 'UnsafeMutablePointer<Double>'}}
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// expected-note@-1 {{arguments to generic parameter 'Pointee' ('Int' and 'Double') are expected to be equal}}
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//problem/68254165 - Bad diagnostic when using String init(decodingCString:) with an incorrect pointer type
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func rdar68254165(ptr: UnsafeMutablePointer<Int8>) {
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_ = String(decodingCString: ptr, as: .utf8) // expected-error {{generic parameter 'Encoding' could not be inferred}}
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// expected-error@-1 {{type '_.Type' has no member 'utf8'}}
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}
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