const runtime.fixedRootCount

3 uses

	runtime (current package)
		mgcmark.go#L22: 	fixedRootCount
		mgcmark.go#L167: 	work.markrootJobs.Store(uint32(fixedRootCount + work.nDataRoots + work.nBSSRoots + work.nSpanRoots + work.nMaybeRunnableStackRoots))
		mgcmark.go#L170: 	work.baseData = uint32(fixedRootCount)