ci: linux/386

Though we don't officially support older versions of Go, this is an easy fix to
unblock people.

Fixes #812

.github/workflows/experimental.yml

@@ -0,0 +1,36 @@
+# Those tests are allowed to fail. They don't represent an officially supported\
+# situation, but rather ones that are nice to have.
+name: experimental
+on:
+# Not ready for merged commits yet.
+#  push:
+#    branches:
+#      - v2
+  pull_request:
+    branches:
+      - v2
+
+jobs:
+  linux32:
+    name: linux 386
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Setup go
+        uses: actions/setup-go@master
+        with:
+          go-version: 1.19
+      - name: Run unit tests
+        run: GOARCH=386 go test ./...
+  tinygo:
+    name: tinygo 0.25.0
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: tinygo test ./...
+        run: |
+          docker run --rm -v $(pwd):/src -w /src tinygo/tinygo:0.25.0 tinygo test ./...

unmarshaler.go

@@ -1140,7 +1140,7 @@ func fieldByIndex(v reflect.Value, path []int) reflect.Value {
 	for i, x := range path {
 		v = v.Field(x)
 
-		if i < len(path)-1 && v.Kind() == reflect.Pointer {
+		if i < len(path)-1 && v.Kind() == reflect.Ptr {
 			if v.IsNil() {
 				v.Set(reflect.New(v.Type().Elem()))
 			}
@@ -1208,7 +1208,7 @@ func forEachField(t reflect.Type, path []int, do func(name string, path []int))
 
 		if f.Anonymous && name == "" {
 			t2 := f.Type
-			if t2.Kind() == reflect.Pointer {
+			if t2.Kind() == reflect.Ptr {
 				t2 = t2.Elem()
 			}