1 files changed, 0 insertions, 116 deletions
diff --git a/errors/debug_stack.go b/errors/debug_stack.go
deleted file mode 100755
index fa77ddc8..00000000
--- a/errors/debug_stack.go
+++ /dev/null
@@ -1,116 +0,0 @@
-// +build debug
-
-package errors
-
-import (
-	"bytes"
-	"fmt"
-	"runtime"
-	"strings"
-)
-
-type stack struct {
-	callers []uintptr
-	// TODO(adg): add time of creation
-}
-
-func (e *Error) populateStack() {
-	e.callers = callers()
-
-	e2, ok := e.Err.(*Error)
-	if !ok {
-		return
-	}
-
-	i := 0
-
-	ok = false
-	for ; i < len(e.callers) && i < len(e2.callers); i++ {
-		// check for similar
-		if e.callers[len(e.callers)-1-i] != e2.callers[len(e2.callers)-1-i] {
-			break
-		}
-		ok = true
-	}
-
-	if ok { //we have common PCs
-		e2Head := e2.callers[:len(e2.callers)-i]
-		eTail := e.callers
-
-		e.callers = make([]uintptr, len(e2Head)+len(eTail))
-
-		copy(e.callers, e2Head)
-		copy(e.callers[len(e2Head):], eTail)
-
-		e2.callers = nil
-	}
-}
-
-// frame returns the nth frame, with the frame at top of stack being 0.
-func frame(callers []uintptr, n int) runtime.Frame {
-	frames := runtime.CallersFrames(callers)
-	var f runtime.Frame
-	for i := len(callers) - 1; i >= n; i-- {
-		var ok bool
-		f, ok = frames.Next()
-		if !ok {
-			break
-		}
-	}
-	return f
-}
-
-func (e *Error) printStack(b *bytes.Buffer) {
-	c := callers()
-
-	var prev string
-	var diff bool
-	for i := 0; i < len(e.callers); i++ {
-		pc := e.callers[len(e.callers)-i-1] // get current PC
-		fn := runtime.FuncForPC(pc)         // get function by pc
-		name := fn.Name()
-
-		if !diff && i < len(c) {
-			ppc := c[len(c)-i-1]
-			pname := runtime.FuncForPC(ppc).Name()
-			if name == pname {
-				continue
-			}
-			diff = true
-		}
-
-		if name == prev {
-			continue
-		}
-
-		trim := 0
-		for {
-			j := strings.IndexAny(name[trim:], "./")
-			if j < 0 {
-				break
-			}
-			if !strings.HasPrefix(prev, name[:j+trim]) {
-				break
-			}
-			trim += j + 1 // skip over the separator
-		}
-
-		// Do the printing.
-		appendStrToBuf(b, Separator)
-		file, line := fn.FileLine(pc)
-		fmt.Fprintf(b, "%v:%d: ", file, line)
-		if trim > 0 {
-			b.WriteString("...")
-		}
-		b.WriteString(name[trim:])
-
-		prev = name
-	}
-}
-
-func callers() []uintptr {
-	var stk [64]uintptr
-	const skip = 4
-	n := runtime.Callers(skip, stk[:])
-	return stk[:n]
-}