https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89158
Bug ID: 89158
Summary: [8/9 Regression] by-value capture of ICE variable
isn't an lvalue?
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: eric at efcs dot ca
Target Milestone: ---
The following code is incorrectly rejected.
// g++ -std=c++14
struct T { T(const int&); };
void Func(T);
void test() {
constexpr int Val = 42;
[Val]() { Func(Val); }; // error: lvalue required as unary '&' operand
}
My understanding is that `Val` is captured by copy, and the call to `Func`
makes it ODR used?
Regardless, I believe this code is well-formed and should be accepted.
It is accepted in 8.1, but rejected in 8.2 and trunk.
[1] https://godbolt.org/z/wrCQ53
