20 General utilities library [utilities]

20.21 Stacktrace [stacktrace]

20.21.3 Class stacktrace_­entry [stacktrace.entry]

20.21.3.5 Comparison [stacktrace.entry.cmp]

friend constexpr bool operator==(const stacktrace_entry& x, const stacktrace_entry& y) noexcept;
Returns: true if and only if x and y represent the same stacktrace entry or both x and y are empty.