Merged update from upstream sources

This is an automated DistroBaker update from upstream sources.
If you do not know what this is about or would like to opt out,
contact the OSCI team.

Source: https://src.fedoraproject.org/rpms/qt5-qtbase.git#6f0b990f87a72e843560c3aa414a0e337f0527b3

qt5-qtbase.spec

@@ -49,7 +49,7 @@ BuildRequires: pkgconfig(libsystemd)
 Name:    qt5-qtbase
 Summary: Qt5 - QtBase components
 Version: 5.15.1
-Release: 6%{?dist}
+Release: 7%{?dist}
 
 # See LGPL_EXCEPTIONS.txt, for exception details
 License: LGPLv2 with exceptions or GPLv3 with exceptions
@@ -129,6 +129,8 @@ Patch90: %{name}-gcc11.patch
 ## upstream patches
 Patch100: qtbase-emit-qscreen-geometry-changed-when-logical-dpi-changes.patch
 
+Patch101: qtbase-QTBUG-86319.patch
+
 # Do not check any files in %%{_qt5_plugindir}/platformthemes/ for requires.
 # Those themes are there for platform integration. If the required libraries are
 # not there, the platform to integrate with isn't either. Then Qt will just
@@ -389,6 +391,7 @@ Qt5 libraries used for drawing widgets and OpenGL items.
 
 ## upstream patches
 %patch100 -p1 -b .emit-qscreen-geometry-changed-when-logical-dpi-changes
+%patch101 -p1
 
 # move some bundled libs to ensure they're not accidentally used
 pushd src/3rdparty
@@ -1046,6 +1049,9 @@ fi
 
 
 %changelog
+* Tue Nov 03 2020 Sandro Mani <manisandro@gmail.com> - 5.15.1-7
+- Backport upstream fix for QTBUG-86319
+
 * Sun Oct 18 2020 Jeff Law <law@redhat.com> - 5.15.1-6
 - Fix missing #includes for gcc-11
 

qtbase-QTBUG-86319.patch

@@ -0,0 +1,73 @@
+From a82032351c921c3d5d57122aca57b47f83f9b9d1 Mon Sep 17 00:00:00 2001
+From: Thiago Macieira <thiago.macieira@intel.com>
+Date: Thu, 10 Sep 2020 13:30:59 -0700
+Subject: [PATCH] forkfd/Linux: ask clone() to use the SIGCHLD as the
+ termination signal
+
+Because of these lines in the Linux kernel (kernel/fork.c, see [1][3]):
+
+		if (clone_flags & CLONE_VFORK)
+			trace = PTRACE_EVENT_VFORK;
+		else if (args->exit_signal != SIGCHLD)
+			trace = PTRACE_EVENT_CLONE;
+		else
+			trace = PTRACE_EVENT_FORK;
+
+Without CLONE_VFORK (which we can't use), if the exit signal isn't
+SIGCHLD, the debugger will get a PTRACE_EVENT_CLONE, which makes it
+think the process we're starting is a thread, not a new process. Both
+gdb and lldb remain attached to the child and when it later performs an
+execve(), they get mightily confused. See gdb bug report[5].
+
+The idea of not having an exit_signal was so that no SIGCHLD would be
+delivered to the parent process in the first place. That way, some
+misguided SIGCHLD handler (*cough* GLib *cough*) wouldn't reap our
+processes. Unfortunately, what I didn't realize was that the kernel
+sends SIGCHLD anyway (see [2][4]), so this defensive measure didn't
+actually work. Consequently, we can pass SIGCHLD to clone() and get the
+debuggers working again.
+
+[ChangeLog][Linux] Fixed an issue that would cause debugging a Qt
+application that uses QProcess to confuse both gdb and lldb if
+the Linux kernel was version 5.4 or higher. Behavior outside of
+a debugging session was not affected.
+
+[1] https://code.woboq.org/linux/linux/kernel/fork.c.html#_do_fork
+[2] https://code.woboq.org/linux/linux/kernel/signal.c.html#do_notify_parent
+[3] https://elixir.bootlin.com/linux/v5.8/source/kernel/fork.c#L2432
+[4] https://elixir.bootlin.com/linux/v5.8/source/kernel/signal.c#L1925
+[5] https://sourceware.org/bugzilla/show_bug.cgi?id=26562
+
+Fixes: QTBUG-86319
+Change-Id: I2fc68c725ba649218bd9fffd1633863613537d42
+Reviewed-by: Dimitrios Apostolou <jimis@qt.io>
+Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
+Reviewed-by: hjk <hjk@qt.io>
+(cherry picked from commit d1fc991c6e3c45a5f93c925d49e3fe77ce6ce455)
+Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
+---
+ src/3rdparty/forkfd/forkfd_linux.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/3rdparty/forkfd/forkfd_linux.c b/src/3rdparty/forkfd/forkfd_linux.c
+index 523fbca3ccc..ffe0e9a5e24 100644
+--- a/src/3rdparty/forkfd/forkfd_linux.c
++++ b/src/3rdparty/forkfd/forkfd_linux.c
+@@ -147,7 +147,7 @@ int system_forkfd(int flags, pid_t *ppid, int *system)
+     }
+ 
+     *system = 1;
+-    unsigned long cloneflags = CLONE_PIDFD;
++    unsigned long cloneflags = CLONE_PIDFD | SIGCHLD;
+     pid = sys_clone(cloneflags, &pidfd);
+     if (ppid)
+         *ppid = pid;
+@@ -171,7 +171,7 @@ int system_forkfd_wait(int ffd, struct forkfd_info *info, int ffdoptions, struct
+ {
+     siginfo_t si;
+     int ret;
+-    int options = __WALL | convertForkfdWaitFlagsToWaitFlags(ffdoptions);
++    int options = convertForkfdWaitFlagsToWaitFlags(ffdoptions);
+ 
+     if ((options & WNOHANG) == 0) {
+         /* check if the file descriptor is non-blocking */