From fc724a0d3c00b4b10f2850ca493eef6d31fc0646 Mon Sep 17 00:00:00 2001
From: Enrico Seiler <enrico.seiler@hotmail.de>
Date: Tue, 14 Nov 2023 13:50:56 +0100
Subject: [PATCH] [INFRA] Add macOS libc++ CI

---
 .github/workflows/ci_macos.yml                          | 6 ++++++
 test/unit/alignment/matrix/detail/debug_matrix_test.cpp | 3 ++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/ci_macos.yml b/.github/workflows/ci_macos.yml
index 9a380fb53c..dca041f2b1 100644
--- a/.github/workflows/ci_macos.yml
+++ b/.github/workflows/ci_macos.yml
@@ -31,6 +31,12 @@ jobs:
       fail-fast: true
       matrix:
         include:
+          - name: "clang17"
+            compiler: "clang-17"
+            build: unit
+            build_type: Release
+            cxx_flags: "-stdlib=libc++" # For verbosity. This is already the default.
+
           - name: "gcc13"
             compiler: "gcc-13"
             build: unit
diff --git a/test/unit/alignment/matrix/detail/debug_matrix_test.cpp b/test/unit/alignment/matrix/detail/debug_matrix_test.cpp
index 58a33cb9b0..14f901f4ef 100644
--- a/test/unit/alignment/matrix/detail/debug_matrix_test.cpp
+++ b/test/unit/alignment/matrix/detail/debug_matrix_test.cpp
@@ -221,7 +221,8 @@ struct debug_matrix_traits<seqan3::detail::debug_matrix<matrix_t, first_sequence
 
 #pragma GCC diagnostic push
 // Ignore bogus warnings in fortified gcc13 build
-#if defined(_FORTIFY_SOURCE) && (_FORTIFY_SOURCE == 2) // _FORTIFY_SOURCE=2 may cause conforming programs to fail
+// _FORTIFY_SOURCE=2 may cause conforming programs to fail
+#if not defined(__clang__) && defined(_FORTIFY_SOURCE) && (_FORTIFY_SOURCE == 2)
 #    pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
 #endif