}

//go:noescape
func domsanread(addr unsafe.Pointer, sz uintptr)

//go:linkname msanwrite
//go:noescape
func msanwrite(addr unsafe.Pointer, sz uintptr)

//go:linkname msanmalloc
//go:noescape
func msanmalloc(addr unsafe.Pointer, sz uintptr)

//go:linkname msanfree
//go:noescape
func msanfree(addr unsafe.Pointer, sz uintptr)

//go:linkname msanmove
//go:noescape

// Because msanenabled is false, none of these functions should be called.

func msanread(addr unsafe.Pointer, sz uintptr)     { throw("msan") }
func msanwrite(addr unsafe.Pointer, sz uintptr)    { throw("msan") }
func msanmalloc(addr unsafe.Pointer, sz uintptr)   { throw("msan") }
func msanfree(addr unsafe.Pointer, sz uintptr)     { throw("msan") }

const Enabled = true

//go:linkname Read runtime.msanread
func Read(addr unsafe.Pointer, sz uintptr)

//go:linkname Write runtime.msanwrite
func Write(addr unsafe.Pointer, sz uintptr)

//go:linkname Malloc runtime.msanmalloc
func Malloc(addr unsafe.Pointer, sz uintptr)

//go:linkname Free runtime.msanfree
func Free(addr unsafe.Pointer, sz uintptr)

//go:linkname Move runtime.msanmove

		if trace.ok() {
			trace.GoroutineStackAlloc(uintptr(v), uintptr(n))
			traceRelease(trace)
		}
	}
	if raceenabled {
		racemalloc(v, uintptr(n))
	}
	if msanenabled {
		msanmalloc(v, uintptr(n))
	}
	if asanenabled {
		asanunpoison(v, uintptr(n))
	}
	if stackDebug >= 1 {
		print("  allocated ", v, "\n")
	}
	return stack{uintptr(v), uintptr(v) + uintptr(n)}
}

	}

	if raceenabled {
		// TODO(mknyszek): Track individual objects.
		racemalloc(unsafe.Pointer(span.base()), span.elemsize)
	}

	if msanenabled {
		// TODO(mknyszek): Track individual objects.
		msanmalloc(unsafe.Pointer(span.base()), span.elemsize)
	}

	if asanenabled {
		// TODO(mknyszek): Track individual objects.
		rzSize := computeRZlog(span.elemsize)
		span.elemsize -= rzSize

	// a race marking the bit.
	if gcphase != _GCoff {
		gcmarknewobject(span, uintptr(x))
	}

	if raceenabled {
		racemalloc(x, size)
	}

	if msanenabled {
		msanmalloc(x, size)
	}

	if asanenabled {
		// We should only read/write the memory with the size asked by the user.
		// The rest of the allocated memory should be poisoned, so that we can report

		})
		gp.stackguard0 = gp.stack.lo + stackGuard
	} else {
		if raceenabled {
			racemalloc(unsafe.Pointer(gp.stack.lo), gp.stack.hi-gp.stack.lo)
		}
		if msanenabled {
			msanmalloc(unsafe.Pointer(gp.stack.lo), gp.stack.hi-gp.stack.lo)
		}
		if asanenabled {
			asanunpoison(unsafe.Pointer(gp.stack.lo), gp.stack.hi-gp.stack.lo)
		}
	}
	return gp
}