Add patch to solve stack growth on HPPA.

debian/changelog

@@ -3,6 +3,8 @@ qt6-base (6.4.2+dfsg-17) UNRELEASED; urgency=medium
   [ Lisandro Damián Nicanor Pérez Meyer ]
   * Add remove_rpath_from_examples.patch in order to avoid setting
     RPATH/RUNPATH on examples' binaries.
+  * Add forkfd_grow_stack_upwards_on_hppa.patch to solve how stack grows in
+    HPPA. Thanks John David Anglin for the patch.
 
  -- Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>  Sun, 23 Jul 2023 17:49:16 -0300
 

debian/patches/forkfd_grow_stack_upwards_on_hppa.patch

@@ -0,0 +1,23 @@
+Description: Change how stack grows on HPPA.
+ On HPPA stack grows upwards. This patch introduces this change for
+ this 3rd party code.
+Author: John David Anglin <dave.anglin@bell.net>
+Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1042018
+Reviewed-by: Lisandro Damián Nicanor Pérez Meyer <lisandro@debian.org>
+Last-Update: 2023-07-28
+
+--- ./src/3rdparty/forkfd/forkfd_linux.c.save	2023-07-27 12:04:02.940466337 +0000
++++ ./src/3rdparty/forkfd/forkfd_linux.c	2023-07-27 12:06:53.522077424 +0000
+@@ -168,7 +168,12 @@
+     }
+     *system = 1;
+ 
++#if defined(__hppa__)
++    /* Stack grows up */
++    pid = clone(childFn, childStack, cloneflags, token, &pidfd, NULL, NULL);
++#else
+     pid = clone(childFn, childStack + sizeof(childStack), cloneflags, token, &pidfd, NULL, NULL);
++#endif
+     if (pid < 0)
+         return pid;
+     if (ppid)

debian/patches/series

@@ -20,6 +20,7 @@ cross.patch
 force_shared_libzstd.patch
 no_htmlinfo_example.patch
 remove_rpath_from_examples.patch
+forkfd_grow_stack_upwards_on_hppa.patch
 
 # Don't use yield on CPUs that might not support it
 armel-noyield.patch