07008a8df5
CWG2635 prohibits adding a constraint to a structured as a defect report. This patch implements that restriction. Differential Revision: https://reviews.llvm.org/D138852
34 lines
1002 B
C++
34 lines
1002 B
C++
// RUN: not %clang_cc1 -std=c++20 -fdiagnostics-parseable-fixits -x c++ %s 2> %t
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// RUN: FileCheck %s < %t
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template<typename T>
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concept UnaryC = true;
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template<typename T, typename U>
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concept BinaryC = true;
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struct S{ int i, j; };
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S get_S();
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template<typename T>
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T get_T();
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void use() {
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UnaryC auto [a, b] = get_S();
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// CHECK: error: decomposition declaration cannot be declared with constrained 'auto'
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// CHECK: fix-it:{{.*}}:{16:3-16:10}:""
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BinaryC<int> auto [c, d] = get_S();
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// CHECK: error: decomposition declaration cannot be declared with constrained 'auto'
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// CHECK: fix-it:{{.*}}:{19:3-19:16}:""
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}
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template<typename T>
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void TemplUse() {
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UnaryC auto [a, b] = get_T<T>();
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// CHECK: error: decomposition declaration cannot be declared with constrained 'auto'
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// XCHECK: fix-it:{{.*}}:{26:3-26:10}:""
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BinaryC<T> auto [c, d] = get_T<T>();
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// CHECK: error: decomposition declaration cannot be declared with constrained 'auto'
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// XCHECK: fix-it:{{.*}}:{29:3-29:14}:""
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}
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