From 86a5affdb98be49d378c07cceadc02e4c3ee6891 Mon Sep 17 00:00:00 2001
From: Daniel Nephin <dnephin@hashicorp.com>
Date: Mon, 28 Jun 2021 18:39:30 -0400
Subject: [PATCH] ci: add go-test-32bit to catch atomic misalignment panics

---
 .circleci/config.yml | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index e553a8bb868d..c4da87df3fff 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -275,6 +275,39 @@ jobs:
           path: /tmp/jsonfile
       - run: *notify-slack-failure
 
+  # go-test-32bit is to catch problems where 64-bit ints must be 64-bit aligned 
+  # to use them with sync/atomic. See https://golang.org/pkg/sync/atomic/#pkg-note-BUG.
+  # Running tests with GOARCH=386 seems to be the best way to detect this 
+  # problem. Only runs tests that are -short to limit the time we spend checking
+  # for these bugs.
+  go-test-32bit:
+    docker:
+      - image: *GOLANG_IMAGE
+    environment:
+      <<: *ENVIRONMENT
+      GOTAGS: "" # No tags for OSS but there are for enterprise
+    steps:
+      - checkout
+      - run: *install-gotestsum
+      - run: go mod download
+      - run:
+          name: go test 32-bit
+          command: |
+            mkdir -p $TEST_RESULTS_DIR /tmp/jsonfile
+            export GOARCH=386
+            go env
+            gotestsum \
+              --jsonfile /tmp/jsonfile/go-test-32bit.log \
+              --junitfile $TEST_RESULTS_DIR/gotestsum-report.xml -- \
+              -tags="$GOTAGS" -p 2 \
+              -short ./...
+
+      - store_test_results:
+          path: *TEST_RESULTS_DIR
+      - store_artifacts:
+          path: *TEST_RESULTS_DIR
+      - run: *notify-slack-failure
+
   go-test-lib:
     description: "test a library against a specific Go version"
     parameters:
@@ -984,6 +1017,7 @@ workflows:
           go-version: "1.15"
           <<: *filter-ignore-non-go-branches
       - go-test-race: *filter-ignore-non-go-branches
+      - go-test-32bit: *filter-ignore-non-go-branches
   build-distros:
     unless: << pipeline.parameters.trigger-load-test >>
     jobs: