CI: test on gcc-10 too

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c4f37338ecfdf82079c96e821c666046a3adc16a..9580e7abc23ceb298998d1f1e7e835bd4db01202 100644 (file)
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,17 +16,22 @@ jobs:
   linux:
     name: Linux
 
-    runs-on: ubuntu-18.04
+    runs-on: ${{ matrix.os }}
 
     strategy:
       fail-fast: false
       matrix:
+        os:
+          - ubuntu-18.04
         compiler:
           - gcc-6 # Debian 9 (OFTC)
           - gcc-7
           - gcc-8
           - clang-7
           - clang-8
+        include:
+          - os: ubuntu-20.04
+            compiler: gcc-10
 
     env:
       CC: ${{ matrix.compiler }}