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misc/cgo: prepare for 64-bit ints
In a few places, the existing cgo tests assume that a Go int is the same as a C int. Making int 64 bits wide on 64-bit platforms violates this assumption. Change that code to assume that Go int32 and C int are the same instead. That's still not great, but it's better, and I am unaware of any systems we run on where it is not true. Update #2188. R=iant, r CC=golang-dev https://golang.org/cl/6552064
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@ -11,8 +11,8 @@ import "C"
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import "unsafe"
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func Run(gen, x, y int, a []int) {
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n := make([]int, x*y)
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func Run(gen, x, y int, a []int32) {
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n := make([]int32, x*y)
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for i := 0; i < gen; i++ {
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C.Step(C.int(x), C.int(y), (*C.int)(unsafe.Pointer(&a[0])), (*C.int)(unsafe.Pointer(&n[0])))
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copy(a, n)
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@ -24,7 +24,7 @@ var gen = flag.Int("gen", 10, "generations")
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func main() {
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flag.Parse()
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var a [MAXDIM * MAXDIM]int
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var a [MAXDIM * MAXDIM]int32
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for i := 2; i < *dim; i += 8 {
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for j := 2; j < *dim-3; j += 8 {
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for y := 0; y < 3; y++ {
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@ -28,7 +28,7 @@ func parallelSleep(n int) {
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}
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//export BackgroundSleep
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func BackgroundSleep(n int) {
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func BackgroundSleep(n int32) {
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go func() {
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C.sleep(C.uint(n))
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sleepDone <- true
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