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stdlib: map wchar_t to UInt16 on Windows

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This is an ABI breaking change for Windows.  `WCHAR` on Windows is
mapped to `short` (`-fshort-wchar` makes it `unsigned short`).  When C++
interop is enabled, `WCHAR` will be mapped to `wchar_t` which is then
mapped to `short` (or `unsigned short` if `-fshort-wchar` is specified).
Correct the mapping type to get the desired behaviour.
This commit is contained in:
Saleem Abdulrasool
2023-10-09 20:02:48 -07:00
committed by GitHub
parent 879ffde591
commit d61b8855e9
8 changed files with 46 additions and 4 deletions
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5
test/Interop/SwiftToC/functions/swift-primitive-functions-c-bridging.swift
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@@ -1,6 +1,6 @@
// 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
// RUN: %FileCheck %s < %t/functions.h
// RUN: %FileCheck %s -check-prefix CHECK -check-prefix CHECK-%target-abi < %t/functions.h
// RUN: %check-interop-c-header-in-clang(%t/functions.h)
@@ -19,7 +19,8 @@
// CHECK-NEXT: SWIFT_EXTERN unsigned long long $s9Functions024passThroughCUnsignedLongE0ys6UInt64VADF(unsigned long long x) SWIFT_NOEXCEPT SWIFT_CALL;
// CHECK-NEXT: SWIFT_EXTERN unsigned short $s9Functions25passThroughCUnsignedShortys6UInt16VADF(unsigned short x) SWIFT_NOEXCEPT SWIFT_CALL;
// CHECK-NEXT: SWIFT_EXTERN unsigned char $s9Functions30passThroughCUnsignedSignedCharys5UInt8VADF(unsigned char x) SWIFT_NOEXCEPT SWIFT_CALL;
// CHECK-NEXT: SWIFT_EXTERN wchar_t $s9Functions20passThroughCWideCharys7UnicodeO6ScalarVAFF(wchar_t x) SWIFT_NOEXCEPT SWIFT_CALL;
// CHECK-SYSV-NEXT: SWIFT_EXTERN wchar_t $s9Functions20passThroughCWideCharys7UnicodeO6ScalarVAFF(wchar_t x) SWIFT_NOEXCEPT SWIFT_CALL;
// CHECK-WIN-NEXT: SWIFT_EXTERN wchar_t $s9Functions20passThroughCWideCharys6UInt16VADF(wchar_t x) SWIFT_NOEXCEPT SWIFT_CALL;
// CHECK-NEXT: SWIFT_EXTERN double $s9Functions17passThroughDoubleyS2dF(double x) SWIFT_NOEXCEPT SWIFT_CALL;
// CHECK-NEXT: SWIFT_EXTERN float $s9Functions16passThroughFloatyS2fF(float x) SWIFT_NOEXCEPT SWIFT_CALL;
// CHECK-NEXT: SWIFT_EXTERN float $s9Functions18passThroughFloat32yS2fF(float x) SWIFT_NOEXCEPT SWIFT_CALL;