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// RUN: %target-swift-frontend %s -emit-sil \
// RUN: -o /dev/null \
// RUN: -verify \
// RUN: -sil-verify-all \
// RUN: -enable-experimental-feature NonescapableTypes
// REQUIRES: asserts
// REQUIRES: swift_in_compiler
// Future tests for LifetimeDependenceDiagnostics.
// REQUIRES: disabled
struct BV : ~Escapable {
let p: UnsafeRawPointer
let i: Int
@_unsafeNonescapableResult
init(_ p: UnsafeRawPointer, _ i: Int) {
self.p = p
self.i = i
}
}
// Nonescapable wrapper.
struct NEBV : ~Escapable {
var bv: BV
// Test lifetime inheritance through initialization.
init(_ bv: consuming BV) {
self.bv = bv
}
var view: BV {
_read {
yield bv
}
_modify {
yield &bv
}
}
func borrowedView() -> dependsOn(scoped self) BV {
bv
}
}
// Noncopyable, Nonescapable wrapper.
struct NCNEBV : ~Copyable, ~Escapable {
var bv: BV
// Test lifetime inheritance through initialization.
init(_ bv: consuming BV) {
self.bv = bv
}
var view: BV {
_read {
yield bv
}
_modify {
yield &bv
}
}
func borrowedView() -> dependsOn(scoped self) BV {
bv
}
}
func ncnebv_consume(_: consuming NCNEBV) {}
func bv_consume(_: consuming BV) {}
// =============================================================================
// Diagnostics that should fail.
// @_unsafeResultDependsOn: Test that an unsafe dependence requires
// Builtin.lifetime_dependence.
//
func bv_derive_local(bv: consuming BV) -> _consume(bv) BV {
let bv2 = BV(bv.p, bv.i)
return bv2.derive() // expected-error {{lifetime-dependent value escapes its scope}}
// expected-note @-2 {{it depends on the lifetime of variable 'bv2'}}
// expected-note @-2 {{this use causes the lifetime-dependent value to escape}}
}
// =============================================================================
// Debug locations
// FIXME: Our debug locations on closure captures are incorrect.
// FIXME: We return two errors: one for the caller, and one for the closure.
func bvcons_capture_escape(bv: consuming BV) -> ()->Int {
return { bv.c } // expected-error{{lifetime-dependent variable 'bv' escapes its scope}}
// expected-note @-1 {{this use causes the lifetime-dependent value to escape}}
}
// FIXME: Our debug locations on closure captures are incorrect.
// FIXME: We return two errors: one for the caller, and one for the closure.
func bvcons_capture_escapelet(bv: consuming BV) -> ()->Int {
let closure = { bv.c } // expected-error{{lifetime-dependent variable 'bv' escapes its scope}}
// expected-note @-1 {{this use causes the lifetime-dependent value to escape}}
return closure
}
// =============================================================================
// Can't write lit tests because move-only diagnostics are broken.
func nebv_consume(_: consuming NEBV) {}
// FIXME: consume operator diagnostics does not report a line number for "used here"
func nebv_consume_borrow(nebv: NEBV) {
let bv = nebv.borrowedView() // expected-note {{conflicting access is here}}
nebv_consume(nebv) // expected-error {{overlapping accesses to 'nebv', but deinitialization requires exclusive access}}
bv_consume(bv)
}
// FIXME: consume operator diagnostics does not report a line number for "used here"
func nebv_consume_borrow(nebv: consuming NEBV) { // expected-error {{'nebv' used after consume}}
let bv = nebv.borrowedView() // expected-note {{conflicting access is here}}
_ = consume nebv // expected-error {{overlapping accesses to 'nebv', but modification requires exclusive access}}
// expected-note @-1{{consumed here}}
bv_consume(bv)
}
// FIXME: consume operator diagnostics does not report a line number for "used here"
func ncnebv_consume_borrow(ncnebv: NCNEBV) {
let bv = ncnebv.borrowedView() // expected-note {{conflicting access is here}}
ncnebv_consume(ncnebv) // expected-error {{overlapping accesses to 'nebv', but deinitialization requires exclusive access}}
bv_consume(bv)
}
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