// Version of newosproc that doesn't require a valid G.
//
//go:nosplit
func newosproc0(stacksize uintptr, fn unsafe.Pointer) {
	stack := sysAlloc(stacksize, &memstats.stacks_sys)
	if stack == nil {
		writeErrStr(failallocatestack)
		exit(1)
	}
	ret := clone(cloneFlags, unsafe.Pointer(uintptr(stack)+stacksize), nil, nil, fn)
	if ret < 0 {
		writeErrStr(failthreadcreate)
		exit(1)
	}
}

const (

	if base.Debug.Closure > 0 {
		if clo.Esc() == EscHeap {
			base.WarnfAt(clo.Pos(), "heap closure, captured vars = %v", clo.Func.ClosureVars)
		} else {
			base.WarnfAt(clo.Pos(), "stack closure, captured vars = %v", clo.Func.ClosureVars)
		}
	}
	if base.Flag.CompilingRuntime && clo.Esc() == EscHeap && !clo.IsGoWrap {

	z, err := NewReader(r)
	if err != nil {
		t.Fatalf("NewReader: got %v, want nil", err)
	}
	// Prior to CVE-2022-30631 fix, this would cause an unrecoverable panic due
	// to stack exhaustion.
	_, err = z.Read(make([]byte, 10))
	if err != io.EOF {
		t.Errorf("Reader.Read: got %v, want %v", err, io.EOF)
	}

		if d.hashOffset > maxHashOffset {
			delta := d.hashOffset - 1
			d.hashOffset -= delta
			d.chainHead -= delta

			// Iterate over slices instead of arrays to avoid copying
			// the entire table onto the stack (Issue #18625).
			for i, v := range d.hashPrev[:] {
				if int(v) > delta {
					d.hashPrev[i] = uint32(int(v) - delta)
				} else {
					d.hashPrev[i] = 0
				}
			}
			for i, v := range d.hashHead[:] {

		},
		"/gc/pauses:seconds": {
			compute: func(_ *statAggregate, out *metricValue) {
				// N.B. this is identical to /sched/pauses/total/gc:seconds.
				sched.stwTotalTimeGC.write(out)
			},
		},
		"/gc/stack/starting-size:bytes": {
			compute: func(in *statAggregate, out *metricValue) {
				out.kind = metricKindUint64
				out.scalar = uint64(startingStackSize)
			},
		},
		"/memory/classes/heap/free:bytes": {

		}

		// Mark the stack bound check and morestack call async nonpreemptible.
		// If we get preempted here, when resumed the preemption request is
		// cleared, but we'll still call morestack, which will double the stack
		// unnecessarily. See issue #35470.
		p = ctxt.StartUnsafePoint(p, newprog)
	} else if framesize <= abi.StackBig {
		// large stack: SP-framesize <= stackguard-StackSmall

		}
		if gotLog == "" {
			if d > 0 {
				t.Logf("wanted a stack trace logged; got nothing after %v", d)
			}
			return false
		}
		if !strings.Contains(gotLog, "created by ") && strings.Count(gotLog, "\n") < 6 {
			if d > 0 {
				t.Logf("output doesn't look like a panic stack trace after %v. Got: %s", d, gotLog)
			}
			return false
		}
		return true
	})
}

package runtime

import (
	"internal/runtime/atomic"
	"unsafe"
)

// Trace state.

// trace is global tracing context.
var trace struct {
	// trace.lock must only be acquired on the system stack where
	// stack splits cannot happen while it is held.
	lock mutex

	// Trace buffer management.
	//
	// First we check the empty list for any free buffers. If not, buffers

	}

	// Common individual register masks
	var (
		gp         = buildReg("R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R23 R24 R25 R26 R27 R28 R29 R31") // R1 is LR, R2 is thread pointer, R3 is stack pointer, R22 is g, R30 is REGTMP
		gpg        = gp | buildReg("g")
		gpsp       = gp | buildReg("SP")
		gpspg      = gpg | buildReg("SP")
		gpspsbg    = gpspg | buildReg("SB")

	}
	if !strings.Contains(o, "Exception 0xbad") {
		t.Fatalf("No stack trace: %v", o)
	}
}

func TestZeroDivisionException(t *testing.T) {
	o := runTestProg(t, "testprog", "ZeroDivisionException")
	if !strings.Contains(o, "panic: runtime error: integer divide by zero") {
		t.Fatalf("No stack trace: %v", o)
	}
}

func TestWERDialogue(t *testing.T) {