std_lib_facilities.h error: cannot bind non-const lvalue reference of type 'bool&' to an rvalue of type 'bool'

[ivanusick]

When using the subscript operator [] on a vector<bool> i.e

vector<bool> a;

a.push_back(true);

cout << a[0];

results in:

error: cannot bind non-const lvalue reference of type 'bool&' to an rvalue of type 'bool'
87 | return std::vector::operator[](i);

Tested on gcc 11.2.0 and clang 13.0 for C++11

[cloudlakecho]

@ivanusick Did you check the true is the "bool" type? I guess the error be actually from a.push_back(true);.