Initialize module and dependencies

vendor/golang.org/x/tools/internal/ssainternal/ssainternal.go

@@ -0,0 +1,22 @@
+// Copyright 2025 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package ssainternal exposes setters for internals of go/ssa.
+// It cannot actually depend on symbols from go/ssa.
+package ssainternal
+
+import "go/types"
+
+// SetNoReturn sets the predicate used when building the ssa.Program
+// prog that reports whether a given function cannot return.
+// This may be used to prune spurious control flow edges
+// after (e.g.) log.Fatal, improving the precision of analyses.
+//
+// You must link [golang.org/x/tools/go/ssa] into your application for
+// this function to be non-nil.
+//
+// TODO(adonovan): add (*ssa.Program).SetNoReturn to the public API.
+var SetNoReturn = func(prog any, noreturn func(*types.Func) bool) {
+	panic("golang.org/x/tools/go/ssa not linked into application")
+}