const runtime.scavChunkFlagsMask
2 uses
runtime (current package)
mgcscavenge.go#L1243: scavChunkFlags: scavChunkFlags(uint8(sc>>(16+logScavChunkInUseMax)) & scavChunkFlagsMask),
mgcscavenge.go#L1265: scavChunkFlagsMask = (1 << scavChunkMaxFlags) - 1
The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)