From 8f6fe440ea868969aca47bb26600da2c3a3c3c2f Mon Sep 17 00:00:00 2001
From: Huan Du <i@huandu.me>
Date: Fri, 28 Jul 2023 20:30:13 +0800
Subject: [PATCH] fix a deadloop when parsing variable like a.b.c

---
 go.mod                          | 4 +---
 go.sum                          | 9 ---------
 internal/assertion/assertion.go | 6 +++++-
 internal/assertion/parser.go    | 2 +-
 4 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/go.mod b/go.mod
index 4d90685..5ce1e79 100644
--- a/go.mod
+++ b/go.mod
@@ -2,6 +2,4 @@ module github.com/huandu/go-assert
 
 go 1.13
 
-require (
-	github.com/davecgh/go-spew v1.1.1
-)
+require github.com/davecgh/go-spew v1.1.1
diff --git a/go.sum b/go.sum
index 1041afa..b5e2922 100644
--- a/go.sum
+++ b/go.sum
@@ -1,11 +1,2 @@
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
-github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/internal/assertion/assertion.go b/internal/assertion/assertion.go
index de82e7a..84fc071 100644
--- a/internal/assertion/assertion.go
+++ b/internal/assertion/assertion.go
@@ -510,7 +510,11 @@ func getValueInterface(v reflect.Value) interface{} {
 		num := v.NumField()
 
 		for i := 0; i < num; i++ {
-			st.Field(i).Set(reflect.ValueOf(getValueInterface(v.Field(i))))
+			field := st.Field(i)
+
+			if field.CanSet() {
+				field.Set(reflect.ValueOf(getValueInterface(v.Field(i))))
+			}
 		}
 
 		return st.Interface()
diff --git a/internal/assertion/parser.go b/internal/assertion/parser.go
index 0f58faf..5cddd1b 100644
--- a/internal/assertion/parser.go
+++ b/internal/assertion/parser.go
@@ -522,7 +522,7 @@ func IsVar(expr ast.Expr) bool {
 
 		for {
 			if sel, ok := x.(*ast.SelectorExpr); ok {
-				x = sel
+				x = sel.X
 			} else {
 				break
 			}