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112 lines
3.5 KiB
Swift
112 lines
3.5 KiB
Swift
// RUN: rm -rf %t
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// RUN: split-file %s %t
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// RUN: not %target-swift-frontend -typecheck -I %swift_src_root/lib/ClangImporter/SwiftBridging -I %t/Inputs %t/test.swift -enable-experimental-feature LifetimeDependence -cxx-interoperability-mode=default -diagnostic-style llvm 2>&1 | %FileCheck %s
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// REQUIRES: swift_feature_LifetimeDependence
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//--- Inputs/module.modulemap
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module Test {
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header "nonescapable.h"
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requires cplusplus
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}
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//--- Inputs/nonescapable.h
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#include "swift/bridging"
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struct SWIFT_NONESCAPABLE View {
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View() : member(nullptr) {}
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View(const int *p [[clang::lifetimebound]]) : member(p) {}
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View(const View&) = default;
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private:
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const int *member;
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};
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struct SWIFT_ESCAPABLE Owner {
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int data;
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};
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Owner f(int* x [[clang::lifetimebound]]) {
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return Owner{0};
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}
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Owner f2(int* x [[clang::lifetimebound]], int* y [[clang::lifetimebound]]) {
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return Owner{0};
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}
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View g(int* x) {
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return View(x);
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}
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template<typename F, typename S>
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struct SWIFT_ESCAPABLE_IF(F, S) MyPair {
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F first;
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S second;
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};
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MyPair<View, Owner> h1(int* x);
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MyPair<Owner, View> h2(int* x);
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MyPair<Owner, Owner> h3(int* x);
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template<typename F, typename S>
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struct SWIFT_ESCAPABLE_IF(F, Missing) MyPair2 {
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F first;
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S second;
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};
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template<typename F, int S>
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struct SWIFT_ESCAPABLE_IF(F, S) MyType {
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F field;
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};
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MyPair2<Owner, Owner> i1();
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MyType<Owner, 0> i2();
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template<typename T>
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struct Outer {
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struct NonTemplated {
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template <typename S>
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struct SWIFT_ESCAPABLE_IF(T, S) Inner {
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T t;
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S s;
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};
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};
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};
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Outer<View>::NonTemplated::Inner<Owner> j1();
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Outer<Owner>::NonTemplated::Inner<View> j2();
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Outer<Owner>::NonTemplated::Inner<Owner> j3();
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//--- test.swift
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import Test
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// CHECK: error: cannot infer lifetime dependence, no parameters found that are either ~Escapable or Escapable with a borrowing ownership
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public func noAnnotations() -> View {
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// CHECK: nonescapable.h:15:7: warning: the returned type 'Owner' is annotated as escapable; it cannot have lifetime dependencies
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f(nil)
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// CHECK: nonescapable.h:19:7: warning: the returned type 'Owner' is annotated as escapable; it cannot have lifetime dependencies
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// No duplicate warning for f2:
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// CHECK-NOT: nonescapable.h:19
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f2(nil, nil)
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// CHECK: nonescapable.h:23:6: warning: the returned type 'View' is annotated as non-escapable; its lifetime dependencies must be annotated
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// CHECK: nonescapable.h:23:6: error: cannot infer lifetime dependence, no parameters found that are either ~Escapable or Escapable with a borrowing ownership
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g(nil)
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h1(nil)
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// CHECK: nonescapable.h:33:21: error: cannot infer lifetime dependence, no parameters found that are either ~Escapable or Escapable with a borrowing ownership
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h2(nil)
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// CHECK: nonescapable.h:34:21: error: cannot infer lifetime dependence, no parameters found that are either ~Escapable or Escapable with a borrowing ownership
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h3(nil)
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i1()
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// CHECK: nonescapable.h:38:39: error: template parameter 'Missing' does not exist
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i2()
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// CHECK: nonescapable.h:44:33: error: template parameter 'S' expected to be a type parameter
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j1()
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// CHECK: nonescapable.h:62:41: error: cannot infer lifetime dependence, no parameters found that are either ~Escapable or Escapable with a borrowing ownership
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j2()
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// CHECK: nonescapable.h:63:41: error: cannot infer lifetime dependence, no parameters found that are either ~Escapable or Escapable with a borrowing ownership
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j3()
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// CHECK-NOT: error
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// CHECK-NOT: warning
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return View()
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}
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