if l.flags&FlagCheckLinkname == 0 {
		return
	}

	error := func() {
		log.Fatalf("%s: invalid reference to %s", pkg, name)
	}
	pkgs, ok := blockedLinknames[name]
	if ok {
		for _, p := range pkgs {
			if pkg == p {
				return // pkg is allowed
			}
		}
		error()
	}
	r, li := l.toLocal(s)
	if r == l.extReader { // referencing external symbol is okay

		if gover.Compare(ld.requirements.GoVersion(), gover.TidyGoModSumVersion) < 0 && (ld.Tidy || cfg.BuildMod != "mod") {
			keepPkgGoModSums = false
			keepModSumsForZipSums = false
		}
		for _, pkg := range ld.pkgs {
			// We check pkg.mod.Path here instead of pkg.inStd because the
			// pseudo-package "C" is not in std, but not provided by any module (and
			// shouldn't force loading the whole module graph).

		s.callResult(n, callNormal)
		if n.Op() == ir.OCALLFUNC && n.Fun.Op() == ir.ONAME && n.Fun.(*ir.Name).Class == ir.PFUNC {
			if fn := n.Fun.Sym().Name; base.Flag.CompilingRuntime && fn == "throw" ||
				n.Fun.Sym().Pkg == ir.Pkgs.Runtime &&
					(fn == "throwinit" || fn == "gopanic" || fn == "panicwrap" || fn == "block" ||
						fn == "panicmakeslicelen" || fn == "panicmakeslicecap" || fn == "panicunsafeslicelen" ||