Function callers

withstack/stack.go:53–59

callers mirrors the code in github.com/pkg/errors, but makes the depth customizable.

(depth int)

// callers mirrors the code in github.com/pkg/errors,
// but makes the depth customizable.
func callers(depth int) *stack {
	const numFrames = 32
	var pcs [numFrames]uintptr
	n := runtime.Callers(2+depth, pcs[:])
	var st stack = pcs[0:n]
	return &st
}