return funcline1(f, targetpc, true)
}

func funcspdelta(f funcInfo, targetpc uintptr) int32 {
	x, _ := pcvalue(f, f.pcsp, targetpc, true)
	if debugPcln && x&(goarch.PtrSize-1) != 0 {
		print("invalid spdelta ", funcname(f), " ", hex(f.entry()), " ", hex(targetpc), " ", hex(f.pcsp), " ", x, "\n")
		throw("bad spdelta")
	}
	return x
}

// funcMaxSPDelta returns the maximum spdelta at any point in f.

		"runtime_test.TestCallersPanic"}

	defer func() {
		if r := recover(); r == nil {
			t.Fatal("did not panic")
		}
		pcs := make([]uintptr, 20)
		pcs = pcs[:runtime.Callers(0, pcs)]
		testCallers(t, pcs, true)
		testCallersEqual(t, pcs, want)
	}()
	f1(true)
}

func TestCallersDoublePanic(t *testing.T) {
	// Make sure we don't have any extra frames on the stack (due to

		return rec
	}
	// Slow path: the stack may still be in the map.

	// Grab the stack's PCs as the source-of-truth.
	var pcs [pprofMaxStack]uint64
	pcsForStack(stack, &pcs)

	// Check the source-of-truth.
	var rec *traceviewer.ProfileRecord
	if existing, ok := m.pcs[pcs]; ok {
		// In the map.
		rec = m.stacks[existing]
		delete(m.stacks, existing)
	} else {
		// Not in the map.

}

type locInfo struct {
	// location id assigned by the profileBuilder
	id uint64

	// sequence of PCs, including the fake PCs returned by the traceback
	// to represent inlined functions
	// https://github.com/golang/go/blob/d6f2f833c93a41ec1c68e49804b8387a06b131c5/src/runtime/traceback.go#L347-L368
	pcs []uintptr

	// firstPCFrames and firstPCSymbolizeResult hold the results of the

type traceStackTable struct {
	tab traceMap
}

// put returns a unique id for the stack trace pcs and caches it in the table,
// if it sees the trace for the first time.
func (t *traceStackTable) put(pcs []uintptr) uint64 {
	if len(pcs) == 0 {
		return 0
	}
	id, _ := t.tab.put(noescape(unsafe.Pointer(&pcs[0])), uintptr(len(pcs))*unsafe.Sizeof(uintptr(0)))
	return id
}

	// and following calls.
	maxLocalHeight := 0
	relocs, ri := ldr.Relocs(sym), 0
	pcsp := obj.NewPCIter(uint32(ctxt.Arch.MinLC))
	for pcsp.Init(ldr.Data(ldr.Pcsp(sym))); !pcsp.Done; pcsp.Next() {
		// pcsp.value is in effect for [pcsp.pc, pcsp.nextpc).
		height := int(pcsp.Value)
		if height > maxLocalHeight {
			maxLocalHeight = height
		}

		// Process calls in this span.

			}
			frames = append(frames, pc)

			if _, ok := pcs[pc]; !ok {
				pcs[pc] = frame{
					pc:     pc,
					funcID: stringID(funcID),
					fileID: stringID(fileID),
					line:   line,
				}
			}
		}

		// Add the stack to the map.
		if err := stackTable.insert(stackID(id), stack{pcs: frames}); err != nil {
			return err
		}
	}
	return nil
}

	if !w.h.Enabled(context.Background(), level) {
		return 0, nil
	}
	var pc uintptr
	if !internal.IgnorePC && w.capturePC {
		// skip [runtime.Callers, w.Write, Logger.Output, log.Print]
		var pcs [1]uintptr
		runtime.Callers(4, pcs[:])
		pc = pcs[0]
	}

	// Remove final newline.
	origLen := len(buf) // Report that the entire buf was written.
	if len(buf) > 0 && buf[len(buf)-1] == '\n' {
		buf = buf[:len(buf)-1]
	}

	// statements in packages compiled without -race (e.g.,
	// ensureSigM in runtime/signal_unix.go).
	var pcs []uintptr
	if raceenabled && pc0 != nil {
		pc1 := (*[1 << 16]uintptr)(unsafe.Pointer(pc0))
		pcs = pc1[:ncases:ncases]
	}
	casePC := func(casi int) uintptr {
		if pcs == nil {
			return 0
		}
		return pcs[casi]
	}

	var t0 int64
	if blockprofilerate > 0 {
		t0 = cputicks()
	}

	}

	// Test that profiles correctly jump over systemstack,
	// including nested systemstack calls.
	pcs := make([]uintptr, 20)
	pcs = pcs[:TracebackSystemstack(pcs, 5)]
	// Check that runtime.TracebackSystemstack appears five times
	// and that we see TestTracebackSystemstack.
	countIn, countOut := 0, 0
	frames := CallersFrames(pcs)
	var tb strings.Builder
	for {
		frame, more := frames.Next()