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8f7fdd94ef
Fix #67495, #72198 We build ill-formed AST nodes for invalid structured binding. For case `int [_, b] = {0, 0};`, the `DecompositionDecl` is valid, and its children `BindingDecl`s are valid but with a NULL type, this breaks clang invariants in many places, and using these `BindingDecl`s can lead to crashes. This patch fixes them by marking the DecompositionDecl and its children invalid.
43 lines
999 B
C++
43 lines
999 B
C++
// RUN: not %clang_cc1 -triple x86_64-unknown-unknown -Wno-unused-value -fcxx-exceptions -std=gnu++17 -ast-dump %s | FileCheck -strict-whitespace %s
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struct A { A(int, int) {} };
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class ForwardDecl;
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void test() {
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// Verify the valid-bit of the VarDecl.
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// CHECK: `-VarDecl {{.*}} a1 'A'
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A a1;
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// CHECK: `-VarDecl {{.*}} a2 'const A'
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const A a2;
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// CHECK: `-VarDecl {{.*}} a3 'A'
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A a3 = garbage();
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// CHECK: `-VarDecl {{.*}} a4 'const A &'
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const A& a4;
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// CHECK: `-VarDecl {{.*}} invalid b2 'ForwardDecl'
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ForwardDecl b2;
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// CHECK: `-VarDecl {{.*}} invalid b3 'auto'
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auto b3 = garbage();
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// CHECK: `-VarDecl {{.*}} invalid b4 'auto'
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auto b4 = A(1);
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// CHECK: `-VarDecl {{.*}} invalid b5 'auto'
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auto b5 = A{1};
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}
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void GH72198() {
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// CHECK: DecompositionDecl {{.*}} invalid 'int'
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int [_, b] = {0, 0};
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[b]{};
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}
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namespace GH67495 {
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int get_point();
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void f() {
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// CHECK: DecompositionDecl {{.*}} invalid 'int &'
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auto& [x, y] = get_point();
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[x, y] {};
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}
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}
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