https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66672
Henry Cooney <hacoo36 at gmail dot com> changed:
What |Removed |Added
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CC| |hacoo36 at gmail dot com
--- Comment #1 from Henry Cooney <hacoo36 at gmail dot com> ---
I tested this behavior as of g++ 7.2.0; is_same<decltype((j)), ...> still seems
to indicate that j is an int& inside the lambda.
I think this behavior is probably incorrect WRT the language spec. For example,
the following code produces a compile-time error ('assignment of read-only
variable 'j''):
====
int main() {
int i = 100;
int &j = i;
cout << j;
[=]()
{
cout << is_same<decltype((j)), int &>::value
<< is_same<decltype((j)), int const&>::value;
cout << endl;
j = j + 1;
}();
cout << j;
}
====
That suggests that the correct type of j is indeed int const&, not int&!