From 9e75036947905d4a8505f9a975a0f49fb810b0dd Mon Sep 17 00:00:00 2001
From: Egor Tensin <egor@tensin.name>
Date: Mon, 29 Dec 2025 17:50:29 +0100
Subject: workflows/test: verify that a specific version is installed

---
 .github/actions/check-cc/action.yml | 11 +++++++++--
 .github/workflows/test.yml          |  4 ++++
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/.github/actions/check-cc/action.yml b/.github/actions/check-cc/action.yml
index 5a6daa8..9f29631 100644
--- a/.github/actions/check-cc/action.yml
+++ b/.github/actions/check-cc/action.yml
@@ -1,11 +1,13 @@
 name: Check cc/c++
 description: Check cc/c++
+inputs:
+  version:
+    description: GCC version to grep for
+    required: false
 runs:
   using: composite
   steps:
     - run: |
-        $version = '${{ inputs.version }}'
-
         function Check-Exe {
             param(
                 [Parameter(Mandatory=$true)]
@@ -18,6 +20,11 @@ runs:
 
             # Is this really the most stable piece of `gcc --version` output?
             $($output | Select-String -Pattern "This is free software; see the source for copying conditions." -SimpleMatch -Quiet) -or $(throw "Unexpected `$Exe --version` output")
+
+            $version = '${{ inputs.version }}'
+            if ($version) {
+                $($output | Select-String -Pattern $version -SimpleMatch -Quiet) -or $(throw "Unexpected `$Exe --version` output")
+            }
         }
 
         Check-Exe cc
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1a62ee6..c74c03b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -61,6 +61,10 @@ jobs:
         uses: ./
         with:
           version: '${{ matrix.version }}'
+      - name: Verify the version
+        uses: ./.github/actions/check-cc
+        with:
+          version: '${{ matrix.version }}'
       - name: Build foo.exe
         run: |
           & '${{ steps.setup.outputs.gxx }}' -std=c++14 -o foo foo.cpp
-- 
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