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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.
52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend %S/large-structs-pass-return-indirect-in-cxx.swift -module-name Structs -clang-header-expose-decls=all-public -typecheck -verify -emit-clang-header-path %t/structs.h
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// Link should fail by default when a move is
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// performed in C++.
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// RUN: %target-interop-build-clangxx -c %s -I %t -o %t/swift-structs-execution.o
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// RUN: not %target-interop-build-swift %S/large-structs-pass-return-indirect-in-cxx.swift -o %t/swift-structs-execution -Xlinker %t/swift-structs-execution.o -module-name Structs -Xfrontend -entry-point-function-name -Xfrontend swiftMain 2>&1 | %FileCheck --check-prefix=LINK %s
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// LINK: fatalError_Cxx_move_of_Swift_value_type_not_supported_yet
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// Compile should fail by default when move assignment is attempted in C++:
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// RUN: not %target-interop-build-clangxx -c %s -I %t -o %t/swift-structs-execution.o -DMOVE_ASSIGN 2>&1 | %FileCheck --check-prefix=MOVEASSIGN %s
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// Fallback to abort at runtime:
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// RUN: %target-interop-build-clangxx -c %s -I %t -o %t/swift-structs-execution.o -DLINKS
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// RUN: %target-interop-build-swift %S/large-structs-pass-return-indirect-in-cxx.swift -o %t/swift-structs-execution -Xlinker %t/swift-structs-execution.o -module-name Structs -Xfrontend -entry-point-function-name -Xfrontend swiftMain 2>&1
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// RUN: %target-codesign %t/swift-structs-execution
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// RUN: %target-run %t/swift-structs-execution 2>%t/output || true
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// RUN: cat %t/output | %FileCheck %s
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// REQUIRES: executable_test
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#include <assert.h>
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#include "structs.h"
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#include <memory>
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#ifdef LINKS
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extern "C" void _fatalError_Cxx_move_of_Swift_value_type_not_supported_yet() {
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}
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#endif
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int main() {
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using namespace Structs;
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auto x = returnNewStructSeveralI64(42);
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#ifdef MOVE_ASSIGN
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auto y = returnNewStructSeveralI64(24);
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x = std::move(y);
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// MOVEASSIGN: deleted operator '='
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#else
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StructSeveralI64 x2 = std::move(x);
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#endif
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return 0;
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}
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// CHECK: C++ does not support moving a Swift value yet
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