const runtime.fixedRootCount

3 uses

	runtime (current package)
		mgcmark.go#L18: 	fixedRootCount
		mgcmark.go#L108: 	work.markrootJobs = uint32(fixedRootCount + work.nFlushCacheRoots + work.nDataRoots + work.nBSSRoots + work.nSpanRoots + work.nStackRoots)
		mgcmark.go#L151: 	baseFlushCache := uint32(fixedRootCount)