tools/syz-declextract: infer argument/field types

Use data flow analysis to infer syscall argument, return value,
and struct field types.
See the comment in pkg/declextract/typing.go for more details.

1 files changed, 9 insertions, 0 deletions

diff --git a/pkg/testutil/testutil.go b/pkg/testutil/testutil.go
index 153584dd5..b2ec06afb 100644
--- a/pkg/testutil/testutil.go
+++ b/pkg/testutil/testutil.go
@@ -90,3 +90,12 @@ func randValue(t *testing.T, rnd *rand.Rand, typ reflect.Type) reflect.Value {
 	}
 	return v
 }
+
+type Writer struct {
+	testing.TB
+}
+
+func (w *Writer) Write(data []byte) (int, error) {
+	w.TB.Logf("%s", data)
+	return len(data), nil
+}