From 1a6ec19234e98531b24f36773ccde900a780cbbf Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Sun, 19 May 2024 10:06:37 +0200
Subject: [PATCH] qualify-clang.sh : check for the output

---
 debian/qualify-clang.sh | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/debian/qualify-clang.sh b/debian/qualify-clang.sh
index 85702754..c2b3a57c 100755
--- a/debian/qualify-clang.sh
+++ b/debian/qualify-clang.sh
@@ -1059,7 +1059,16 @@ clang++-$VERSION -std=c++20 \
 # The output should be
 #   Hello modular world
 #   Hello compat modular world
-./a.out
+./a.out > foo.log
+
+if ! grep -q -E "Hello modular world" foo.log 2>&1; then
+    echo "c++ modules didn't work"
+    exit 1
+fi
+if ! grep -q -E "Hello compat modular world" foo.log 2>&1; then
+    echo "c++ modules didn't work"
+    exit 1
+fi
 
 if test ! -f /usr/lib/llvm-$VERSION/include/cxxabi.h; then
     echo "Install libc++abi-$VERSION-dev";