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// +build go1.9
package stack_test
import (
"runtime"
"testing"
"github.com/go-stack/stack"
)
func TestCallerInlinedPanic(t *testing.T) {
t.Parallel()
var line int
defer func() {
if recover() != nil {
var pcs [32]uintptr
n := runtime.Callers(1, pcs[:])
frames := runtime.CallersFrames(pcs[:n])
// count frames to runtime.sigpanic
panicIdx := 0
for {
f, more := frames.Next()
if f.Function == "runtime.sigpanic" {
break
}
panicIdx++
if !more {
t.Fatal("no runtime.sigpanic entry on the stack")
}
}
c := stack.Caller(panicIdx)
if got, want := c.Frame().Function, "runtime.sigpanic"; got != want {
t.Errorf("sigpanic frame: got name == %v, want name == %v", got, want)
}
c1 := stack.Caller(panicIdx + 1)
if got, want := c1.Frame().Function, "github.com/go-stack/stack_test.inlinablePanic"; got != want {
t.Errorf("TestCallerInlinedPanic frame: got name == %v, want name == %v", got, want)
}
if got, want := c1.Frame().Line, line; got != want {
t.Errorf("TestCallerInlinedPanic frame: got line == %v, want line == %v", got, want)
}
}
}()
doPanic(t, &line)
t.Fatal("failed to panic")
}
func doPanic(t *testing.T, panicLine *int) {
_, _, line, ok := runtime.Caller(0)
*panicLine = line + 11 // adjust to match line of panic below
if !ok {
t.Fatal("runtime.Caller(0) failed")
}
inlinablePanic()
}
func inlinablePanic() {
// Initiate a sigpanic.
var x *uintptr
_ = *x
}
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