diff --git a/go/ssa/interp/external.go b/go/ssa/interp/external.go
index f96c89b4..3aa7a5f3 100644
--- a/go/ssa/interp/external.go
+++ b/go/ssa/interp/external.go
@@ -91,6 +91,7 @@ func init() {
 		"runtime.GOMAXPROCS":               ext۰runtime۰GOMAXPROCS,
 		"runtime.Goexit":                   ext۰runtime۰Goexit,
 		"runtime.Gosched":                  ext۰runtime۰Gosched,
+		"runtime.init":                     ext۰runtime۰init,
 		"runtime.NumCPU":                   ext۰runtime۰NumCPU,
 		"runtime.ReadMemStats":             ext۰runtime۰ReadMemStats,
 		"runtime.SetFinalizer":             ext۰runtime۰SetFinalizer,
@@ -344,6 +345,10 @@ func ext۰runtime۰Gosched(fr *frame, args []value) value {
 	return nil
 }
 
+func ext۰runtime۰init(fr *frame, args []value) value {
+	return nil
+}
+
 func ext۰runtime۰NumCPU(fr *frame, args []value) value {
 	return runtime.NumCPU()
 }
diff --git a/go/ssa/interp/interp.go b/go/ssa/interp/interp.go
index 78866178..77f11f62 100644
--- a/go/ssa/interp/interp.go
+++ b/go/ssa/interp/interp.go
@@ -670,6 +670,19 @@ func Interpret(mainpkg *ssa.Package, mode Mode, sizes types.Sizes, filename stri
 			sz := sizes.Sizeof(pkg.Object.Scope().Lookup("MemStats").Type())
 			setGlobal(i, pkg, "sizeof_C_MStats", uintptr(sz))
 
+			// Delete the bodies of almost all "runtime" functions since they're magic.
+			// A missing intrinsic leads to a very clear error.
+			for _, mem := range pkg.Members {
+				if fn, ok := mem.(*ssa.Function); ok {
+					switch fn.Name() {
+					case "GOROOT", "gogetenv":
+						// keep
+					default:
+						fn.Blocks = nil
+					}
+				}
+			}
+
 		case "os":
 			Args := []value{filename}
 			for _, s := range args {