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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.
15 lines
701 B
Swift
15 lines
701 B
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend %s -module-name Functions -clang-header-expose-decls=all-public -typecheck -verify -emit-clang-header-path %t/functions.h
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// RUN: %FileCheck %s < %t/functions.h
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// RUN: %check-interop-c-header-in-clang(%t/functions.h)
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// REQUIRES: OS=macosx || OS=linux-gnu
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// CHECK: SWIFT_EXTERN long $s9Functions16passThroughCLongyS2iF(long x) SWIFT_NOEXCEPT SWIFT_CALL;
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// CHECK-NEXT: SWIFT_EXTERN unsigned long $s9Functions24passThroughCUnsignedLongyS2uF(unsigned long x) SWIFT_NOEXCEPT SWIFT_CALL;
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public func passThroughCLong(_ x: CLong) -> CLong { return x }
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public func passThroughCUnsignedLong(_ x: CUnsignedLong) -> CUnsignedLong { return x }
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