fix(verify): fix flaky JIT tests with global buffers and KeepAlive

verify/avx512_test.go

@@ -7,6 +7,7 @@ import (
 	"bytes"
 	"math/rand"
 	"os"
+	"runtime"
 	"testing"
 	"unsafe"
 )
@@ -53,6 +54,8 @@ func TestAVX512DecodeKnownAnswers(t *testing.T) {
 			PutUint64(args, 40, uint64(cap(dst)))
 
 			out, err := k.CallFunc("decodeBlockAVX512", args)
+			runtime.KeepAlive(tt.src)
+			runtime.KeepAlive(dst)
 			if err != nil {
 				t.Fatalf("CallFunc: %v", err)
 			}
@@ -91,6 +94,8 @@ func TestAVX512DifferentialFuzz(t *testing.T) {
 		PutUint64(args, 40, uint64(cap(jitDst)))
 
 		out, err := k.CallFunc("decodeBlockAVX512", args)
+		runtime.KeepAlive(src)
+		runtime.KeepAlive(jitDst)
 		if err != nil {
 			t.Fatalf("iter %d: %v", i, err)
 		}
@@ -134,6 +139,8 @@ func TestAVX512WideCopy(t *testing.T) {
 		PutUint64(args, 40, uint64(n))
 
 		_, err := k.CallFunc("wideCopyAVX512", args)
+		runtime.KeepAlive(dst)
+		runtime.KeepAlive(src)
 		if err != nil {
 			t.Fatalf("wideCopyAVX512(n=%d): %v", n, err)
 		}