From c107f895aa1e2fd9aac92b3fdb9761145569f14f Mon Sep 17 00:00:00 2001
From: Prateek R Patil <prateek.patil@gmail.com>
Date: Sun, 18 Apr 2021 04:28:56 -0700
Subject: [PATCH] Fix for allowing parsing:false with stacks (#8934)

* Initial fix for allowing parsing:false with stacks

* Added test from #8935 as requested.

Co-authored-by: tinfoilpancakes <tfm357@gmail.com>
---
 src/core/core.datasetController.js         |  1 +
 test/specs/core.datasetController.tests.js | 23 ++++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/src/core/core.datasetController.js b/src/core/core.datasetController.js
index 8d8e9a95ec9..a3882e9e66d 100644
--- a/src/core/core.datasetController.js
+++ b/src/core/core.datasetController.js
@@ -392,6 +392,7 @@ export default class DatasetController {
     if (me._parsing === false) {
       meta._parsed = data;
       meta._sorted = true;
+      parsed = data;
     } else {
       if (isArray(data[start])) {
         parsed = me.parseArrayData(meta, data, start, count);
diff --git a/test/specs/core.datasetController.tests.js b/test/specs/core.datasetController.tests.js
index d9075754ca4..ce7d121b6c9 100644
--- a/test/specs/core.datasetController.tests.js
+++ b/test/specs/core.datasetController.tests.js
@@ -699,6 +699,29 @@ describe('Chart.DatasetController', function() {
     Chart.defaults.parsing = originalDefault;
   });
 
+  it('should not fail to produce stacks when parsing is off', function() {
+    var chart = acquireChart({
+      type: 'line',
+      data: {
+        datasets: [{
+          data: [{x: 1, y: 10}]
+        }, {
+          data: [{x: 1, y: 20}]
+        }]
+      },
+      options: {
+        parsing: false,
+        scales: {
+          x: {stacked: true},
+          y: {stacked: true}
+        }
+      }
+    });
+
+    var meta = chart.getDatasetMeta(0);
+    expect(meta._parsed[0]._stacks).toEqual(jasmine.objectContaining({y: {0: 10, 1: 20}}));
+  });
+
   describe('resolveDataElementOptions', function() {
     it('should cache options when possible', function() {
       const chart = acquireChart({