Bug#1068873: openjdk-21: more m68k patches

[Thorsten Glaser <tg@mirbsd.de>]

Source: openjdk-21
X-Debbugs-Cc: tg@mirbsd.de, debian-68k@lists.debian.org

Please add the following patch e.g. to debian/patches/m68k-support.diff
for more making implicit alignment assumptions (here by the futex
syscall) explicit:

--- src/hotspot/os/linux/waitBarrier_linux.hpp~	2024-04-12 18:24:38.584686322 +0200
+++ src/hotspot/os/linux/waitBarrier_linux.hpp	2024-04-12 18:24:46.768716977 +0200
@@ -29,7 +29,7 @@
 #include "utilities/globalDefinitions.hpp"
 
 class LinuxWaitBarrier : public CHeapObj<mtInternal> {
-  volatile int _futex_barrier;
+  volatile int _futex_barrier __attribute__((__aligned__(4)));
 
   NONCOPYABLE(LinuxWaitBarrier);
 

Thanks!

(This is what I found trying to build openjdk-20, but it’ll be
needed in 21 as well. Even getting to this point took 13½ days
already…)