Bug#1042009: onetbb: FTBFS on armel: error: ‘void __atomic_store_1(volatile void*, unsigned char, int) ’ writing 1 byte into a region of size 0 overflows the destination [-Werror=stringop-overflow=]

[Petter Reinholdtsen]

I managed to reduce it to this patch, now applied to git as
1050-armel-atomic-past-buffer.patch.  No idea why it help, but worked
when doing test build on armel / abel.debian.org.

--- tbb.orig/src/tbb/concurrent_monitor.h       2023-07-30 20:28:22.251868539 +0000
+++ tbb/src/tbb/concurrent_monitor.h    2023-07-31 06:47:43.046714530 +0000
@@ -290,7 +290,10 @@
             n = my_waitset.front();
             if (n != end) {
                 my_waitset.remove(*n);
-                to_wait_node(n)->my_is_in_list.store(false, std::memory_order_relaxed);
+                wait_node<Context>* wn = to_wait_node(n);
+                if (wn) {
+                    wn->my_is_in_list.store(false, std::memory_order_relaxed);
+                }
             }
         }
 
-- 
Happy hacking
Petter Reinholdtsen