//
	// These throws do not include runtime frames, system goroutines, or
	// frame metadata.
	throwTypeUser

	// throwTypeRuntime is a throw due to a problem with Go itself.
	//
	// These throws include as much information as possible to aid in
	// debugging the runtime, including runtime frames, system goroutines,
	// and frame metadata.
	throwTypeRuntime
)

	}
	for i, l := range lines {
		if !strings.HasPrefix(l, fmt.Sprintf("#%v  ", i)) {
			t.Fatalf("malformed backtrace at line %v: %v", i, l)
		}
	}
	// TODO(mundaym): check for unknown frames (e.g. "??").
}

// NOTE: the maps below are allocated larger than abi.MapBucketCount
// to ensure that they are not "optimized out".

var helloSource = `
import "fmt"
import "runtime"

		e.globalCT, err = encodeColorTable(e.globalColorTable[:], p, paddedSize)
		if err != nil && e.err == nil {
			e.err = err
			return
		}
		e.write(e.globalColorTable[:e.globalCT])
	} else {
		// All frames have a local color table, so a global color table
		// is not needed.
		e.buf[0] = 0x00
		e.buf[1] = 0x00 // Background Color Index.
		e.buf[2] = 0x00 // Pixel Aspect Ratio.
		e.write(e.buf[:3])
	}

func stack(skip, nFrames int) string {
	pcs := make([]uintptr, nFrames+1)
	n := runtime.Callers(skip+1, pcs)
	if n == 0 {
		return "(no stack)"
	}
	frames := runtime.CallersFrames(pcs[:n])
	var b strings.Builder
	i := 0
	for {
		frame, more := frames.Next()
		fmt.Fprintf(&b, "called from %s (%s:%d)\n", frame.Function, frame.File, frame.Line)
		if !more {
			break
		}
		i++
		if i >= nFrames {

            if (removeUnusedEntriesAfterDays < 1) {
                throw new IllegalArgumentException(name + " cannot be set to retain entries for " + removeUnusedEntriesAfterDays + " days.  For time frames shorter than one day, use the 'removeUnusedEntriesOlderThan' property.");
            }
            getRemoveUnusedEntriesOlderThan().set(providerFromSupplier(daysAgo(removeUnusedEntriesAfterDays)));
        }
    }

		mp.lockedExt = 0

		mp.lockedg.set(newg)
		newg.lockedm.set(mp)
		gp.lockedm = 0

		// Mark the calling goroutine as being at an async
		// safe-point, since it has a few conservative frames
		// at the bottom of the stack. This also prevents
		// stack shrinks.
		gp.asyncSafePoint = true

		// Stash newg away so we can execute it below (mcall's
		// closure can't capture anything).

// frame is being processed, nodes in the downstream frames have not yet been
// processed.  This property is important because we need to process an entire
// frame to know whether the optimistic mode converges or not.  In other words,
// nodes in the downstream frames shall not be populated until all of its
// upstream frames are populated.  In effect, this order enables processing each

        output.contains(documentationRegistry.getDocumentationRecommendationFor("on this", "command_line_interface", "sec:command_line_warnings")) == warningsSummary

        and: "system stack frames are filtered"
        !output.contains('jdk.internal.')
        !output.contains('sun.') || output.contains('sun.run')
        !output.contains('org.codehaus.groovy.')

// and returns this as the name of a counter.
func telemetryCounterName(crash []byte) (string, error) {
	pcs, err := parseStackPCs(string(crash))
	if err != nil {
		return "", err
	}

	// Limit the number of frames we request.
	pcs = pcs[:min(len(pcs), 16)]

	if len(pcs) == 0 {
		// This can occur if all goroutines are idle, as when
		// caught in a deadlock, or killed by an async signal
		// while blocked.
		//

	// It could be that the saved registers Rq, Rr, Rs, and Rm
	// contain pointers. However, the only way this can matter
	// is if the stack grows (which it can't, udiv is nosplit)
	// or if a fault happens and more frames are added to
	// the stack due to deferred functions.
	// In the latter case, the stack can grow arbitrarily,
	// and garbage collection can happen, and those
	// operations care about pointers, but in that case