implement freebsd libproc query, BUT it's reading wrong values

proc_freebsd.go

@@ -0,0 +1,37 @@
+//go:build freebsd
+
+package proc
+
+/*
+#cgo LDFLAGS: -lproc
+#include <libproc.h>
+
+static int libproc_state(int pid) {
+	int ret;
+	struct proc_handle* proc;
+
+	ret = proc_attach((pid_t)pid, PATTACH_RDONLY | PATTACH_NOSTOP, &proc);
+	if (ret) return -ret;
+
+	ret = proc_state(proc);
+	proc_detach(proc, 0);
+	proc_free(proc);
+
+	return ret;
+}
+*/
+import "C"
+import (
+	"errors"
+	"fmt"
+)
+
+func queryInternal(pid int) (ProcState, error) {
+	var ret C.int
+	ret = C.libproc_state((C.int)(pid))
+	if ret < 0 {
+		return 0, errors.New(fmt.Sprintf("libproc: %d", (int)(-ret)))
+	}
+
+	return (ProcState)(ret), nil
+}

proc_test.go

@@ -1,11 +1,11 @@
-//go:build linux
-
 package proc
 
-import "testing"
+import (
+	"testing"
+)
 
 func TestQuery(t *testing.T) {
 	if _, err := Query(1); err != nil {
-		t.Failed()
+		t.Fail()
 	}
 }