const runtime.fixedRootCount

3 uses

	runtime (current package)
		mgcmark.go#L20: 	fixedRootCount
		mgcmark.go#L109: 	work.markrootJobs = uint32(fixedRootCount + work.nDataRoots + work.nBSSRoots + work.nSpanRoots + work.nStackRoots)
		mgcmark.go#L112: 	work.baseData = uint32(fixedRootCount)