optimize: drop linkname

rand_1.21.go

@@ -0,0 +1,19 @@
+//go:build !go1.22
+
+package tea
+
+import (
+	_ "unsafe" // required by go:linkname
+)
+
+// randuint32 returns a lock free uint32 value.
+//
+// Too much legacy code has go:linkname references
+// to runtime.fastrand and friends, so keep these around for now.
+// Code should migrate to math/rand/v2.Uint64,
+// which is just as fast, but that's only available in Go 1.22+.
+// It would be reasonable to remove these in Go 1.24.
+// Do not call these from package runtime.
+//
+//go:linkname randuint32 runtime.fastrand
+func randuint32() uint32