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runtime: verify hmap type size 

LGTM=khr
R=golang-codereviews, khr
CC=golang-codereviews, khr
https://golang.org/cl/114510044
This commit is contained in:
Dmitriy Vyukov 2014-07-29 22:06:20 +04:00
parent d514e2915c
commit fe3ee5741d
1 changed files with 2 additions and 2 deletions
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4
src/pkg/runtime/hashmap.go
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@ -153,8 +153,8 @@ func evacuated(b *bmap) bool {
}
func makemap(t *maptype, hint int64) *hmap {
if unsafe.Sizeof(hmap{}) > 48 {
gothrow("hmap too large")
if sz := unsafe.Sizeof(hmap{}); sz > 48 || sz != uintptr(t.hmap.size) {
gothrow("bad hmap size")
}
if hint < 0 || int64(int32(hint)) != hint {