04b89192ac
This is the same issue as PR86429, just in potential_constant_expression_1 rather than cxx_eval_constant_expression. As in that case, when we're trying to evaluate a constant expression within a lambda, we don't have a constant closure object to refer to, but we can try to refer directly to the captured variable. gcc/cp/ChangeLog 2020-05-05 Jason Merrill <jason@redhat.com> PR c++/90212 * constexpr.c (potential_constant_expression_1): In a lambda function, consider a captured variable directly.
14 lines
255 B
C
14 lines
255 B
C
// PR c++/90212
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// { dg-do compile { target c++11 } }
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template<typename T> struct tuple {
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constexpr tuple(T&& t) : t(t) { }
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int t;
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};
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void foo() {
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constexpr tuple<int> v1{1};
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constexpr auto v2 = v1;
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[&]{ constexpr auto v2 = v1; };
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}
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