ca61961380
Implement https://cplusplus.github.io/CWG/issues/2631.html. Immediate calls in default arguments and defaults members are not evaluated. Instead, we evaluate them when constructing a `CXXDefaultArgExpr`/`BuildCXXDefaultInitExpr`. The immediate calls are executed by doing a transform on the initializing expression. Note that lambdas are not considering subexpressions so we do not need to transform them. As a result of this patch, unused default member initializers are not considered odr-used, and errors about members binding to local variables in an outer scope only surface at the point where a constructor is defined. Reviewed By: aaron.ballman, #clang-language-wg, rupprecht Differential Revision: https://reviews.llvm.org/D136554
19 lines
573 B
C++
19 lines
573 B
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
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void f() {
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int x = 3; // expected-note{{'x' declared here}}
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const int c = 2;
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struct C {
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int& x2 = x; // expected-error{{reference to local variable 'x' declared in enclosing function 'f'}}
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int cc = c;
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};
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(void)[]() mutable {
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int x = 3; // expected-note{{'x' declared here}}
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struct C {
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int& x2 = x; // expected-error{{reference to local variable 'x' declared in enclosing lambda expression}}
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}c; // expected-note {{required here}}
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};
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C(); // expected-note {{required here}}
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}
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