Support Postgres 13

Author: mpartel

.github/workflows/release.yml

@@ -19,10 +19,14 @@ jobs:
         run: env USE_DOCKER=1 POSTGRES_VERSION=11 ./build-and-test.sh
       - name: Test on PG12
         run: env USE_DOCKER=1 POSTGRES_VERSION=12 ./build-and-test.sh
+      - name: Test on PG13
+        run: env USE_DOCKER=1 POSTGRES_VERSION=13 ./build-and-test.sh
       - name: Build for PG11
         run: env POSTGRES_VERSION=11 ./docker-build-dist.sh
       - name: Build for PG12
         run: env POSTGRES_VERSION=12 ./docker-build-dist.sh
+      - name: Build for PG13
+        run: env POSTGRES_VERSION=13 ./docker-build-dist.sh
       - name: Create Release
         id: create_release
         uses: actions/create-release@v1
@@ -51,3 +55,12 @@ jobs:
           asset_path: ./dist/postgres-protobuf-${{ steps.get_version.outputs.VERSION }}-linux-x86_64-for-pg12.tar.gz
           asset_name: postgres-protobuf-${{ steps.get_version.outputs.VERSION }}-linux-x86_64-for-pg12.tar.gz
           asset_content_type: application/gzip
+      - name: Upload PG13 tarball
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./dist/postgres-protobuf-${{ steps.get_version.outputs.VERSION }}-linux-x86_64-for-pg13.tar.gz
+          asset_name: postgres-protobuf-${{ steps.get_version.outputs.VERSION }}-linux-x86_64-for-pg13.tar.gz
+          asset_content_type: application/gzip

.github/workflows/tests-pg13.yml

@@ -0,0 +1,14 @@
+name: Tests on PG13
+
+on: [push]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-18.04
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build and run tests in Docker
+      run: env USE_DOCKER=1 POSTGRES_VERSION=13 ./build-and-test.sh

README.md

@@ -2,6 +2,7 @@
 
 ![Tests on PG11](https://github.com/mpartel/postgres-protobuf/workflows/Tests%20on%20PG11/badge.svg)
 ![Tests on PG12](https://github.com/mpartel/postgres-protobuf/workflows/Tests%20on%20PG12/badge.svg)
+![Tests on PG13](https://github.com/mpartel/postgres-protobuf/workflows/Tests%20on%20PG13/badge.svg)
 
 Features:
 

postgres_protobuf.cpp

@@ -16,6 +16,7 @@ extern "C" {
 #include <catalog/pg_type.h>
 #include <fmgr.h>
 #include <funcapi.h>
+#include <utils/array.h>
 #include <utils/lsyscache.h>
 }  // extern "C"