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reflect: more function layout tests

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Test more stuff:
1) flagNoPointers, an incorrect value was the cause of #9425
2) Total function layout size
3) gc program

Change-Id: I73f65fe740215938fa930d2f096febd9db0a0021
Reviewed-on: https://go-review.googlesource.com/2090
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Keith Randall 2014-12-23 10:57:37 -08:00
parent 0d4ea0c70d
commit 108dbd0dc7
2 changed files with 72 additions and 6 deletions
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10
src/reflect/export_test.go
View file

@ -22,7 +22,7 @@ const PtrSize = ptrSize
const BitsPointer = bitsPointer
const BitsScalar = bitsScalar
func FuncLayout(t Type, rcvr Type) (frametype Type, argSize, retOffset uintptr, stack []byte) {
func FuncLayout(t Type, rcvr Type) (frametype Type, argSize, retOffset uintptr, stack []byte, gc []byte, ptrs bool) {
var ft *rtype
var s *bitVector
if rcvr != nil {
@ -34,5 +34,13 @@ func FuncLayout(t Type, rcvr Type) (frametype Type, argSize, retOffset uintptr,
for i := uint32(0); i < s.n; i += 2 {
stack = append(stack, s.data[i/8]>>(i%8)&3)
}
if ft.kind & kindGCProg != 0 {
panic("can't handle gc programs")
}
gcdata := (*[1000]byte)(ft.gc[0])
for i := uintptr(0); i < ft.size/ptrSize; i++ {
gc = append(gc, gcdata[i/2] >> (i%2*4+2) & 3)
}
ptrs = ft.kind & kindNoPointers == 0
return
}