derek.holloway
7502bf64a4
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50 lines
2.3 KiB
C++
50 lines
2.3 KiB
C++
// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-unknown -ast-dump %s \
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// RUN: | FileCheck -strict-whitespace %s
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struct S {
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struct {
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int i;
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};
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};
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int accessInRegularFunction() {
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return S().i;
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// CHECK: FunctionDecl {{.*}} accessInRegularFunction 'int ()'
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// CHECK: | `-ReturnStmt {{.*}}
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// CHECK-NEXT: | `-ExprWithCleanups {{.*}} 'int'
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// CHECK-NEXT: | `-ImplicitCastExpr {{.*}} 'int' <LValueToRValue>
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// CHECK-NEXT: | `-MemberExpr {{.*}} 'int' xvalue .i
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// CHECK-NEXT: | `-MemberExpr {{.*}} 'S::(anonymous struct at {{.*}})
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// CHECK-NEXT: | `-MaterializeTemporaryExpr {{.*}} 'S' xvalue
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// CHECK-NEXT: | `-CXXTemporaryObjectExpr {{.*}} 'S' 'void () noexcept' zeroing
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}
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// AST should look the same in a function template with an unused template
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// parameter.
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template <class>
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int accessInFunctionTemplate() {
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return S().i;
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// CHECK: FunctionDecl {{.*}} accessInFunctionTemplate 'int ()'
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// CHECK: | `-ReturnStmt {{.*}}
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// CHECK-NEXT: | `-ExprWithCleanups {{.*}} 'int'
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// CHECK-NEXT: | `-ImplicitCastExpr {{.*}} 'int' <LValueToRValue>
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// CHECK-NEXT: | `-MemberExpr {{.*}} 'int' xvalue .i
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// CHECK-NEXT: | `-MemberExpr {{.*}} 'S::(anonymous struct at {{.*}})
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// CHECK-NEXT: | `-MaterializeTemporaryExpr {{.*}} 'S' xvalue
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// CHECK-NEXT: | `-CXXTemporaryObjectExpr {{.*}} 'S' 'void () noexcept' zeroing
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}
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// AST should look the same in an instantiation of the function template.
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// This is a regression test: The AST used to contain the
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// `MaterializeTemporaryExpr` in the wrong place, causing a `MemberExpr` to have
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// a prvalue base (which is not allowed in C++).
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template int accessInFunctionTemplate<int>();
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// CHECK: FunctionDecl {{.*}} accessInFunctionTemplate 'int ()' explicit_instantiation_definition
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// CHECK: `-ReturnStmt {{.*}}
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// CHECK-NEXT: `-ExprWithCleanups {{.*}} 'int'
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// CHECK-NEXT: `-ImplicitCastExpr {{.*}} 'int' <LValueToRValue>
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// CHECK-NEXT: `-MemberExpr {{.*}} 'int' xvalue .i
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// CHECK-NEXT: `-MemberExpr {{.*}} 'S::(anonymous struct at {{.*}})
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// CHECK-NEXT: `-MaterializeTemporaryExpr {{.*}} 'S' xvalue
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// CHECK-NEXT: `-CXXTemporaryObjectExpr {{.*}} 'S' 'void () noexcept' zeroing
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