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da07ff577c
PrintAsClang is supposed to emit declarations in the same order regardless of the compiler’s internal state, but we have repeatedly found that our current criteria are inadequate, resulting in non-functionality-affecting changes to generated header content. Add a diagnostic that’s emitted when this happens soliciting a bug report. Since there *should* be no cases where the compiler fails to order declarations, this diagnostic is never actually emitted. Instead, we test this change by enabling `-verify` on nearly all PrintAsClang tests to make sure they are unaffected. This did demonstrate a missing criterion that only mattered in C++ mode: extensions that varied only in their generic signature were not sorted stably. Add a sort criterion for this.
112 lines
3.8 KiB
C++
112 lines
3.8 KiB
C++
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend %S/swift-class-inheritance-in-cxx.swift -module-name Class -clang-header-expose-decls=all-public -typecheck -verify -emit-clang-header-path %t/class.h
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// RUN: %target-interop-build-clangxx -c %s -I %t -o %t/swift-class-execution.o
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// RUN: %target-interop-build-swift %S/swift-class-inheritance-in-cxx.swift -o %t/swift-class-execution -Xlinker %t/swift-class-execution.o -module-name Class -Xfrontend -entry-point-function-name -Xfrontend swiftMain
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// RUN: %target-codesign %t/swift-class-execution
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// RUN: %target-run %t/swift-class-execution | %FileCheck %s
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// RUN: not %target-interop-build-clangxx -c %s -I %t -o %t/swift-class-execution.o -DERROR1
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// RUN: not %target-interop-build-clangxx -c %s -I %t -o %t/swift-class-execution.o -DERROR2
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// RUN: %empty-directory(%t-evo)
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// RUN: %target-swift-frontend %S/swift-class-inheritance-in-cxx.swift -module-name Class -enable-library-evolution -clang-header-expose-decls=all-public -typecheck -verify -emit-clang-header-path %t-evo/class.h
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// RUN: %target-interop-build-clangxx -c %s -I %t-evo -o %t-evo/swift-class-execution.o
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// RUN: %target-interop-build-swift %S/swift-class-inheritance-in-cxx.swift -o %t-evo/swift-class-execution-evo -Xlinker %t-evo/swift-class-execution.o -module-name Class -enable-library-evolution -Xfrontend -entry-point-function-name -Xfrontend swiftMain
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// RUN: %target-codesign %t-evo/swift-class-execution-evo
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// RUN: %target-run %t-evo/swift-class-execution-evo | %FileCheck %s
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// REQUIRES: executable_test
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#include <assert.h>
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#include "class.h"
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using namespace Class;
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int passByValue(BaseClass b) { return 0; }
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int passByValue(DerivedClass d) { return 1; }
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int passByRef(const BaseClass &b) { return 0; }
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int passByRef(const DerivedClass &d){ return 1; }
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int passByRef2(const BaseClass &b) { return 0; }
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int passByRef2(const DerivedClass &d){ return 1; }
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int passByRef2(const DerivedDerivedClass &d){ return 2; }
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extern "C" size_t swift_retainCount(void * _Nonnull obj);
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size_t getRetainCount(const BaseClass &swiftClass) {
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return swift_retainCount(swift::_impl::_impl_RefCountedClass::getOpaquePointer(swiftClass));
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}
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#ifdef ERROR1
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void checkNotCompile1(BaseClass b) {
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useDerivedClass(b);
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}
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#endif
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#ifdef ERROR2
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void checkNotCompile2(SiblingDerivedClass b) {
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DerivedClass c = b;
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}
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#endif
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int main() {
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{
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auto x = returnDerivedClass();
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useBaseClass(x);
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useDerivedClass(x);
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assert(passByValue(x) == 1);
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assert(passByRef(x) == 1);
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{
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assert(getRetainCount(x) == 1);
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BaseClass baseCopy = x;
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useBaseClass(baseCopy);
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assert(getRetainCount(x) == 2);
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baseCopy = x;
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assert(getRetainCount(x) == 2);
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}
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}
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// CHECK: init BaseClass
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// CHECK-NEXT: init DerivedClass
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// CHECK-NEXT: useBaseClass, type=Class.DerivedClass
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// CHECK-NEXT: useDerivedClass, type=Class.DerivedClass
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// CHECK-NEXT: useBaseClass, type=Class.DerivedClass
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// CHECK-NEXT: destroy DerivedClass
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// CHECK-NEXT: destroy BaseClass
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{
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auto x = returnDerivedDerivedClass();
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useBaseClass(x);
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useDerivedClass(x);
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assert(passByValue(x) == 1);
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assert(passByRef(x) == 1);
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assert(passByRef2(x) == 2);
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}
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// CHECK-NEXT: init BaseClass
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// CHECK-NEXT: init DerivedClass
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// CHECK-NEXT: init DerivedDerivedClass
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// CHECK-NEXT: useBaseClass, type=Class.DerivedDerivedClass
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// CHECK-NEXT: useDerivedClass, type=Class.DerivedDerivedClass
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// CHECK-NEXT: destroy DerivedDerivedClass
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// CHECK-NEXT: destroy DerivedClass
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// CHECK-NEXT: destroy BaseClass
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{
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BaseClass x = returnDerivedClass();
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assert(getRetainCount(x) == 1);
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useBaseClass(x);
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}
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// CHECK-NEXT: init BaseClass
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// CHECK-NEXT: init DerivedClass
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// CHECK-NEXT: useBaseClass, type=Class.DerivedClass
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// CHECK-NEXT: destroy DerivedClass
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// CHECK-NEXT: destroy BaseClass
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return 0;
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}
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