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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.
12 lines
725 B
C++
12 lines
725 B
C++
// RUN: %empty-directory(%t)
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// RUN: split-file %S/array-execution.cpp %t
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// RUN: %target-swift-frontend %t/use-array.swift -module-name UseArray -enable-experimental-cxx-interop -typecheck -verify -emit-clang-header-path %t/UseArray.h
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// RUN: %target-interop-build-clangxx -fno-exceptions -std=gnu++17 -c %t/array-execution.cpp -I %t -o %t/swift-stdlib-execution.o
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// RUN: %target-build-swift %t/use-array.swift -o %t/swift-stdlib-execution -Xlinker %t/swift-stdlib-execution.o -module-name UseArray -Xfrontend -entry-point-function-name -Xfrontend swiftMain
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// RUN: %target-codesign %t/swift-stdlib-execution
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// RUN: %target-run %t/swift-stdlib-execution | %FileCheck %S/array-execution.cpp
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// REQUIRES: executable_test
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