mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
bde054aa75
This gives us much better diagnostics around things like escaping-mismatched function parameters which would previously skip this and produce bogus invalid conversion errors between “identical” types.
102 lines
3.4 KiB
Swift
102 lines
3.4 KiB
Swift
// RUN: %target-typecheck-verify-swift
|
|
|
|
func f0(_ x: Float) -> Float {}
|
|
func f1(_ x: Float) -> Float {}
|
|
func f2(_ x: @autoclosure () -> Float) {}
|
|
|
|
var f : Float
|
|
|
|
_ = f0(f0(f))
|
|
_ = f0(1)
|
|
_ = f1(f1(f))
|
|
f2(f)
|
|
f2(1.0)
|
|
|
|
func call_lvalue(_ rhs: @autoclosure () -> Bool) -> Bool {
|
|
return rhs()
|
|
}
|
|
|
|
// Function returns
|
|
func weirdCast<T, U>(_ x: T) -> U {}
|
|
|
|
func ff() -> (Int) -> (Float) { return weirdCast }
|
|
|
|
// Block <-> function conversions
|
|
|
|
var funct: (Int) -> Int = { $0 }
|
|
var block: @convention(block) (Int) -> Int = funct
|
|
funct = block
|
|
block = funct
|
|
|
|
// Application of implicitly unwrapped optional functions
|
|
|
|
var optFunc: ((String) -> String)! = { $0 }
|
|
var s: String = optFunc("hi")
|
|
|
|
// <rdar://problem/17652759> Default arguments cause crash with tuple permutation
|
|
func testArgumentShuffle(_ first: Int = 7, third: Int = 9) {
|
|
}
|
|
testArgumentShuffle(third: 1, 2) // expected-error {{unnamed argument #2 must precede argument 'third'}} {{21-29=2}} {{31-32=third: 1}}
|
|
|
|
|
|
|
|
func rejectsAssertStringLiteral() {
|
|
assert("foo") // expected-error {{cannot convert value of type 'String' to expected argument type 'Bool'}}
|
|
precondition("foo") // expected-error {{cannot convert value of type 'String' to expected argument type 'Bool'}}
|
|
}
|
|
|
|
|
|
|
|
// <rdar://problem/22243469> QoI: Poor error message with throws, default arguments, & overloads
|
|
func process(_ line: UInt = #line, _ fn: () -> Void) {}
|
|
func process(_ line: UInt = #line) -> Int { return 0 }
|
|
func dangerous() throws {}
|
|
|
|
func test() {
|
|
process { // expected-error {{invalid conversion from throwing function of type '() throws -> ()' to non-throwing function type '() -> Void'}}
|
|
try dangerous()
|
|
test()
|
|
}
|
|
}
|
|
|
|
|
|
// <rdar://problem/19962010> QoI: argument label mismatches produce not-great diagnostic
|
|
class A {
|
|
func a(_ text:String) {
|
|
}
|
|
func a(_ text:String, something:Int?=nil) {
|
|
}
|
|
}
|
|
A().a(text:"sometext") // expected-error{{extraneous argument label 'text:' in call}}{{7-12=}}
|
|
|
|
|
|
// <rdar://problem/22451001> QoI: incorrect diagnostic when argument to print has the wrong type
|
|
func r22451001() -> AnyObject {}
|
|
print(r22451001(5)) // expected-error {{argument passed to call that takes no arguments}}
|
|
|
|
|
|
// SR-590 Passing two parameters to a function that takes one argument of type Any crashes the compiler
|
|
// SR-1028: Segmentation Fault: 11 when superclass init takes parameter of type 'Any'
|
|
func sr590(_ x: Any) {} // expected-note {{'sr590' declared here}}
|
|
sr590(3,4) // expected-error {{extra argument in call}}
|
|
sr590() // expected-error {{missing argument for parameter #1 in call}}
|
|
// Make sure calling with structural tuples still works.
|
|
sr590(())
|
|
sr590((1, 2))
|
|
|
|
// SR-2657: Poor diagnostics when function arguments should be '@escaping'.
|
|
private class SR2657BlockClass<T> {
|
|
let f: T
|
|
init(f: T) { self.f = f }
|
|
}
|
|
|
|
func foo(block: () -> ()) {
|
|
let a = SR2657BlockClass(f: block) // No error
|
|
let b = SR2657BlockClass<()->()>(f: block)
|
|
// expected-error@-1 {{invalid conversion from non-escaping function of type '() -> ()' to potentially escaping function type '() -> ()'}}
|
|
let c: SR2657BlockClass<()->()> = SR2657BlockClass(f: block)
|
|
// expected-error@-1 {{cannot convert value of type 'SR2657BlockClass<() -> ()>' to specified type 'SR2657BlockClass<() -> ()>'}}
|
|
let d: SR2657BlockClass<()->()> = SR2657BlockClass<()->()>(f: block)
|
|
// expected-error@-1 {{invalid conversion from non-escaping function of type '() -> ()' to potentially escaping function type '() -> ()'}}
|
|
}
|