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6cc1a8d880
Adopters of the new Span and MutableSpan types should not encounter information about an experimental feature when they attempt to use these types in unsupported ways, such as simply returning them from a function. Fixes rdar://151788740 (Diagnostic message: suppress printing "requires '-enable-experimental-feature LifetimeDependence'")
169 lines
6.0 KiB
Swift
169 lines
6.0 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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// RUN: not %target-swift-frontend -typecheck -I %swift_src_root/lib/ClangImporter/SwiftBridging -I %t/Inputs %t/test.swift -cxx-interoperability-mode=default -diagnostic-style llvm 2>&1 | %FileCheck %s -check-prefix=CHECK-NO-LIFETIMES
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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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#include <vector>
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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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template<typename... Ts>
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struct SWIFT_ESCAPABLE_IF(Ts) MyTuple {};
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MyTuple<View> k1();
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MyTuple<Owner, View> k2();
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MyTuple<Owner, Owner> k3();
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using ViewVector = std::vector<View>;
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using OwnerVector = std::vector<Owner>;
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ViewVector l1();
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OwnerVector l2();
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const View* usedToCrash(const View* p) {
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return p;
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}
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struct SWIFT_ESCAPABLE Invalid {
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View v;
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};
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//--- test.swift
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import Test
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import CxxStdlib
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// CHECK: error: cannot find type 'Invalid' in scope
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// CHECK: note: escapable record 'Invalid' cannot have non-escapable field 'v'
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public func importInvalid(_ x: Invalid) {
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}
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// CHECK: error: a function with a ~Escapable result needs a parameter to depend on
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// CHECK-NO-LIFETIMES: test.swift:11:32: error: a function cannot return a ~Escapable result
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public func noAnnotations() -> View {
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// CHECK: nonescapable.h:16:7: warning: the returned type 'Owner' is annotated as escapable; it cannot have lifetime dependencies [#ClangDeclarationImport]
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// CHECK-NO-LIFETIMES: nonescapable.h:16:7: warning: the returned type 'Owner' is annotated as escapable; it cannot have lifetime dependencies [#ClangDeclarationImport]
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f(nil)
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// CHECK: nonescapable.h:20:7: warning: the returned type 'Owner' is annotated as escapable; it cannot have lifetime dependencies [#ClangDeclarationImport]
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// CHECK-NO-LIFETIMES: nonescapable.h:20:7: warning: the returned type 'Owner' is annotated as escapable; it cannot have lifetime dependencies [#ClangDeclarationImport]
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// No duplicate warning for f2:
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// CHECK-NOT: nonescapable.h:20
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f2(nil, nil)
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// CHECK: nonescapable.h:24:6: warning: the returned type 'View' is annotated as non-escapable; its lifetime dependencies must be annotated [#ClangDeclarationImport]
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// CHECK-NO-LIFETIMES: nonescapable.h:24:6: warning: the returned type 'View' is annotated as non-escapable; its lifetime dependencies must be annotated [#ClangDeclarationImport]
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// CHECK-NO-LIFETIMES: nonescapable.h:24:6: error: a function cannot return a ~Escapable result
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g(nil)
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h1(nil)
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// CHECK-NO-LIFETIMES: nonescapable.h:34:21: error: a function cannot return a ~Escapable result
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h2(nil)
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// CHECK-NO-LIFETIMES: nonescapable.h:35:21: error: a function cannot return a ~Escapable result
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h3(nil)
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i1()
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// CHECK: nonescapable.h:39:39: error: template parameter 'Missing' does not exist
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// CHECK-NO-LIFETIMES: nonescapable.h:39:39: error: template parameter 'Missing' does not exist
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i2()
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// CHECK: nonescapable.h:45:33: error: template parameter 'S' expected to be a type parameter
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// CHECK-NO-LIFETIMES: nonescapable.h:45:33: error: template parameter 'S' expected to be a type parameter
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j1()
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// CHECK-NO-LIFETIMES: nonescapable.h:63:41: error: a function cannot return a ~Escapable result
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j2()
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// CHECK-NO-LIFETIMES: nonescapable.h:64:41: error: a function cannot return a ~Escapable result
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j3()
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k1();
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// CHECK-NO-LIFETIMES: nonescapable.h:70:15: error: a function cannot return a ~Escapable result
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k2();
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// CHECK-NO-LIFETIMES: nonescapable.h:71:22: error: a function cannot return a ~Escapable result
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k3();
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l1();
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// CHECK: nonescapable.h:77:12: error: a function with a ~Escapable result needs a parameter to depend on
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// CHECK-NO-LIFETIMES: nonescapable.h:77:12: error: a function cannot return a ~Escapable result
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l2();
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return View()
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}
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public func test3(_ x: inout View) {
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usedToCrash(&x)
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// CHECK: error: cannot find 'usedToCrash' in scope
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// CHECK: note: function 'usedToCrash' unavailable (cannot import)
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// CHECK: note: return type unavailable (cannot import)
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// CHECK: pointer to non-escapable type 'View' cannot be imported
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// CHECK-NO-LIFETIMES: error: cannot find 'usedToCrash' in scope
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// CHECK-NO-LIFETIMES: note: function 'usedToCrash' unavailable (cannot import)
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// CHECK-NO-LIFETIMES: note: return type unavailable (cannot import)
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// CHECK-NO-LIFETIMES: pointer to non-escapable type 'View' cannot be imported
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}
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// CHECK-NOT: error
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// CHECK-NOT: warning
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// CHECK-NO-LIFETIMES-NOT: error
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// CHECK-NO-LIFETIMES-NOT: warning
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