diff --git a/src/corelib/kernel/qcore_unix.cpp b/src/corelib/kernel/qcore_unix.cpp
index cec1ab2a0b1..ad39eaab585 100644
--- a/src/corelib/kernel/qcore_unix.cpp
+++ b/src/corelib/kernel/qcore_unix.cpp
@@ -3,6 +3,7 @@
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
 #include <QtCore/private/qglobal_p.h>
+#include <QtCore/qbasicatomic.h>
 #include "qcore_unix_p.h"
 
 #include <stdlib.h>
@@ -19,6 +20,21 @@
 
 QT_BEGIN_NAMESPACE
 
+void qt_ignore_sigpipe() noexcept // noexcept: sigaction(2) is not a Posix Cancellation Point
+{
+    // Set to ignore SIGPIPE once only.
+    Q_CONSTINIT static QBasicAtomicInt atom = Q_BASIC_ATOMIC_INITIALIZER(0);
+    if (!atom.loadRelaxed()) {
+        // More than one thread could turn off SIGPIPE at the same time
+        // But that's acceptable because they all would be doing the same
+        // action
+        struct sigaction noaction = {};
+        noaction.sa_handler = SIG_IGN;
+        ::sigaction(SIGPIPE, &noaction, nullptr);
+        atom.storeRelaxed(1);
+    }
+}
+
 QByteArray qt_readlink(const char *path)
 {
 #ifndef PATH_MAX
diff --git a/src/corelib/kernel/qcore_unix_p.h b/src/corelib/kernel/qcore_unix_p.h
index cad1c4f54ee..e94ac711c50 100644
--- a/src/corelib/kernel/qcore_unix_p.h
+++ b/src/corelib/kernel/qcore_unix_p.h
@@ -18,7 +18,6 @@
 
 #include "qplatformdefs.h"
 #include <QtCore/private/qglobal_p.h>
-#include "qatomic.h"
 #include "qbytearray.h"
 #include "qdeadlinetimer.h"
 
@@ -181,21 +180,7 @@ inline timespec qAbsTimespec(timespec ts)
     return normalizedTimespec(ts);
 }
 
-inline void qt_ignore_sigpipe()
-{
-    // Set to ignore SIGPIPE once only.
-    Q_CONSTINIT static QBasicAtomicInt atom = Q_BASIC_ATOMIC_INITIALIZER(0);
-    if (!atom.loadRelaxed()) {
-        // More than one thread could turn off SIGPIPE at the same time
-        // But that's acceptable because they all would be doing the same
-        // action
-        struct sigaction noaction;
-        memset(&noaction, 0, sizeof(noaction));
-        noaction.sa_handler = SIG_IGN;
-        ::sigaction(SIGPIPE, &noaction, nullptr);
-        atom.storeRelaxed(1);
-    }
-}
+Q_CORE_EXPORT void qt_ignore_sigpipe() noexcept;
 
 #if defined(Q_PROCESSOR_X86_32) && defined(__GLIBC__)
 #  if !__GLIBC_PREREQ(2, 22)