Function Wrap

wrap.go:12–18

Wrap adds information about the program counter of the caller to the error. This is intended to be used at all return points in a function. If err is nil, Wrap returns nil. go:noinline so caller's PC is saved in the stack frame for asm GetCaller.

(err error)

//
//go:noinline so caller's PC is saved in the stack frame for asm GetCaller.
func Wrap(err error) error {
	if err == nil {
		return nil
	}

	return wrap(err, pc.GetCaller())
}

// Wrap2 is used to [Wrap] the last error return when returning 2 values.
// This is useful when returning multiple returns from a function call directly: