From fd47b37298827c399bc1e40774aeb0372c1d5735 Mon Sep 17 00:00:00 2001
From: Christian Kandeler <christian.kandeler@qt.io>
Date: Fri, 17 Jun 2022 15:40:30 +0200
Subject: [PATCH] ProjectExplorer: Do not remove "-Xclang" from command line

... when retrieving built-in header paths.

Fixes: QTCREATORBUG-22136
Change-Id: I2e403392b14b4cdea89fc33eb503fff303618d71
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
---
 src/plugins/projectexplorer/gcctoolchain.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/plugins/projectexplorer/gcctoolchain.cpp b/src/plugins/projectexplorer/gcctoolchain.cpp
index 8a3ffe5b53b..fa62339215d 100644
--- a/src/plugins/projectexplorer/gcctoolchain.cpp
+++ b/src/plugins/projectexplorer/gcctoolchain.cpp
@@ -442,6 +442,8 @@ static QStringList filteredFlags(const QStringList &allFlags, bool considerSysro
         } else if (a == "-arch") {
             if (++i < allFlags.length() && !filtered.contains(a))
                 filtered << a << allFlags.at(i);
+        }  else if (a == "-Xclang") {
+            filtered << a;
         } else if ((considerSysroot && (a == "--sysroot" || a == "-isysroot"))
                    || a == "-D" || a == "-U"
                    || a == "-gcc-toolchain" || a == "-target" || a == "-mllvm" || a == "-isystem") {