// integer that happens to have the same
		// representation as a pointer.
		name:    "union2",
		c:       `typedef union { unsigned long i; } u39; void f39(u39 *pu) {}`,
		imports: []string{"unsafe"},
		body:    `var b C.char; p := &b; C.f39((*C.u39)(unsafe.Pointer(&p)))`,
		fail:    false,
	},
	{
		// Test preemption while entering a cgo call. Issue #21306.
		name:    "preemptduringcall",

			printnl()
		}
		printnl()
	}
	printnl()
}

// issue 8097: mishandling of x = x during return.

func f39() (x []int) {
	x = []int{1}
	printnl() // ERROR "live at call to printnl: .autotmp_[0-9]+$"
	return x
}

func f39a() (x []int) {
	x = []int{1}
	printnl() // ERROR "live at call to printnl: .autotmp_[0-9]+$"

			printnl()
		}
		printnl()
	}
	printnl()
}

// issue 8097: mishandling of x = x during return.

func f39() (x []int) {
	x = []int{1}
	printnl() // ERROR "live at call to printnl: .autotmp_[0-9]+$"
	return x
}

func f39a() (x []int) {
	x = []int{1}
	printnl() // ERROR "live at call to printnl: .autotmp_[0-9]+$"

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