std::basic_stacktrace<Allocator>::at

const_reference at( size_type pos ) const;

(since C++23)

Returns a reference to the entry at specified location pos, with bounds checking.

If pos is not within the range of the stacktrace, an exception of type std::out_of_range is thrown.

pos

position of the stacktrace entry to return

Reference to the requested entry.

std::out_of_range if pos >= size().

Constant.