mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
5bb9ccf149
We export cdecl function declarations twice: for Objective-C and for C++. When the code is compiled in Objective-C++ both of the declarations are visible to the compiler. The generated header did not compile, because only one of the declarations were noexcept. There are multiple possible ways to fix this issue, one of them would make only C++ declarations visible in Objective-C++ mode. However, for this particular problem I decided to also make the Objective-C functions SWIFT_NOEXCEPT. This approach resolves the inconsistency that broke the code when compiled in Objective-C++ mode. Moreover, Swift guarantees that those cdecl declarations cannot raise errors, so in case we only generate the C declarations and consume them from C++ or Objective-C++, those are the correct declarations. rdar://129550313
74 lines
3.7 KiB
Swift
74 lines
3.7 KiB
Swift
// RUN: %empty-directory(%t)
|
|
// RUN: %target-swift-frontend %s -typecheck -module-name Functions -clang-header-expose-decls=all-public -emit-clang-header-path %t/functions.h -cxx-interoperability-mode=upcoming-swift
|
|
// RUN: %FileCheck %s < %t/functions.h
|
|
|
|
import CxxStdlib
|
|
|
|
// RUN: %check-interop-cxx-header-in-clang(%t/functions.h)
|
|
|
|
@_cdecl("cdeclFunction") public func cdeclFunction(_ x: CInt) {}
|
|
|
|
// CHECK: SWIFT_EXTERN void cdeclFunction(int x) SWIFT_NOEXCEPT;
|
|
|
|
// CHECK-LABEL: namespace Functions SWIFT_PRIVATE_ATTR SWIFT_SYMBOL_MODULE("Functions") {
|
|
|
|
// CHECK-LABEL: namespace _impl {
|
|
|
|
// CHECK: SWIFT_EXTERN void $s9Functions17passIntReturnVoid1xys5Int32V_tF(int x) SWIFT_NOEXCEPT SWIFT_CALL; // passIntReturnVoid(x:)
|
|
// CHECK: SWIFT_EXTERN int $s9Functions016passTwoIntReturnD01x1ys5Int32VAF_AFtF(int x, int y) SWIFT_NOEXCEPT SWIFT_CALL; // passTwoIntReturnInt(x:y:)
|
|
// CHECK: SWIFT_EXTERN int $s9Functions016passTwoIntReturnD10NoArgLabelys5Int32VAD_ADtF(int, int) SWIFT_NOEXCEPT SWIFT_CALL; // passTwoIntReturnIntNoArgLabel(_:_:)
|
|
// CHECK: SWIFT_EXTERN int $s9Functions016passTwoIntReturnD19NoArgLabelParamNameys5Int32VAD_ADtF(int x2, int y2) SWIFT_NOEXCEPT SWIFT_CALL; // passTwoIntReturnIntNoArgLabelParamName(_:_:)
|
|
// CHECK: SWIFT_EXTERN void $s9Functions19passVoidReturnNevers0E0OyF(void) SWIFT_NOEXCEPT SWIFT_NORETURN SWIFT_CALL; // passVoidReturnNever()
|
|
// CHECK: SWIFT_EXTERN void $s9Functions014passVoidReturnC0yyF(void) SWIFT_NOEXCEPT SWIFT_CALL; // passVoidReturnVoid()
|
|
|
|
// CHECK: }
|
|
|
|
public func passIntReturnVoid(x: CInt) { print("passIntReturnVoid \(x)") }
|
|
|
|
// CHECK: SWIFT_INLINE_THUNK void passIntReturnVoid(int x) noexcept SWIFT_SYMBOL("s:9Functions17passIntReturnVoid1xys5Int32V_tF") {
|
|
// CHECK: _impl::$s9Functions17passIntReturnVoid1xys5Int32V_tF(x);
|
|
// CHECK: }
|
|
|
|
public func passTwoIntReturnInt(x: CInt, y: CInt) -> CInt { return x + y }
|
|
|
|
// CHECK: SWIFT_INLINE_THUNK int passTwoIntReturnInt(int x, int y) noexcept SWIFT_SYMBOL("s:9Functions016passTwoIntReturnD01x1ys5Int32VAF_AFtF") SWIFT_WARN_UNUSED_RESULT {
|
|
// CHECK: return _impl::$s9Functions016passTwoIntReturnD01x1ys5Int32VAF_AFtF(x, y);
|
|
// CHECK: }
|
|
|
|
public func passTwoIntReturnIntNoArgLabel(_: CInt, _: CInt) -> CInt {
|
|
print("passTwoIntReturnIntNoArgLabel")
|
|
return 42
|
|
}
|
|
|
|
// CHECK: SWIFT_INLINE_THUNK int passTwoIntReturnIntNoArgLabel(int _1, int _2) noexcept SWIFT_SYMBOL("s:9Functions016passTwoIntReturnD10NoArgLabelys5Int32VAD_ADtF") SWIFT_WARN_UNUSED_RESULT {
|
|
// CHECK: return _impl::$s9Functions016passTwoIntReturnD10NoArgLabelys5Int32VAD_ADtF(_1, _2);
|
|
// CHECK: }
|
|
|
|
public func passTwoIntReturnIntNoArgLabelParamName(_ x2: CInt, _ y2: CInt) -> CInt { return x2 + y2 }
|
|
|
|
// CHECK: SWIFT_INLINE_THUNK int passTwoIntReturnIntNoArgLabelParamName(int x2, int y2) noexcept SWIFT_SYMBOL("s:9Functions016passTwoIntReturnD19NoArgLabelParamNameys5Int32VAD_ADtF") SWIFT_WARN_UNUSED_RESULT {
|
|
// CHECK: return _impl::$s9Functions016passTwoIntReturnD19NoArgLabelParamNameys5Int32VAD_ADtF(x2, y2);
|
|
// CHECK: }
|
|
|
|
public func passVoidReturnNever() -> Never {
|
|
print("passVoidReturnNever")
|
|
fflush(nil) // before exit() call
|
|
exit(0)
|
|
}
|
|
|
|
// CHECK-LABEL: SWIFT_INLINE_THUNK void passVoidReturnNever() noexcept SWIFT_SYMBOL("s:9Functions19passVoidReturnNevers0E0OyF") SWIFT_NORETURN {
|
|
// CHECK-NOT: return
|
|
// CHECK-DAG: _impl::$s9Functions19passVoidReturnNevers0E0OyF();
|
|
// CHECK: }
|
|
|
|
public func passVoidReturnVoid() { print("passVoidReturnVoid") }
|
|
|
|
// CHECK: SWIFT_INLINE_THUNK void passVoidReturnVoid() noexcept SWIFT_SYMBOL("s:9Functions014passVoidReturnC0yyF") {
|
|
// CHECK: _impl::$s9Functions014passVoidReturnC0yyF();
|
|
// CHECK: }
|
|
|
|
// CHECK: SWIFT_INLINE_THUNK void varFunctionSameName
|
|
public func varFunctionSameName(_ x: CInt) {}
|
|
|
|
public var varFunctionSameName: CInt = 0
|