add test for crash

command/build_test.go

@@ -426,6 +426,14 @@ func TestBuild(t *testing.T) {
 				},
 			},
 		},
+
+		{
+			name: "hcl - test crash #11381",
+			args: []string{
+				testFixture("hcl", "nil-component-crash.pkr.hcl"),
+			},
+			expectedCode: 1,
+		},
 	}
 
 	for _, tt := range tc {

command/test-fixtures/hcl/nil-component-crash.pkr.hcl

@@ -0,0 +1,10 @@
+source "null" "basic-example" {
+}
+
+build {
+    sources = ["sources.null.basic-example"]
+
+    provisioner "foo" {
+        timeout = "10"
+    }
+}