From c79668d42502a966790eb1b5471ca1c4a231eae8 Mon Sep 17 00:00:00 2001
From: Andrei Horodniceanu <a.horodniceanu@proton.me>
Date: Tue, 19 Aug 2025 20:29:50 +0300
Subject: [PATCH] druntime-test: memoryerror_stackoverflow try harder to avoid
 optimizations

gdc and ldc2 with llvm-20 optimize away the array declarations leading
to an infinite cycle.

See-Also: https://github.com/ldc-developers/ldc/pull/4969
Signed-off-by: Andrei Horodniceanu <a.horodniceanu@proton.me>
---
 druntime/test/exceptions/src/memoryerror_stackoverflow.d | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/druntime/test/exceptions/src/memoryerror_stackoverflow.d b/druntime/test/exceptions/src/memoryerror_stackoverflow.d
index f54d78d26a19..729174f199db 100644
--- a/druntime/test/exceptions/src/memoryerror_stackoverflow.d
+++ b/druntime/test/exceptions/src/memoryerror_stackoverflow.d
@@ -1,16 +1,19 @@
 import etc.linux.memoryerror;
+import core.volatile;
 
 pragma(inline, false):
 
 void f(ref ubyte[1024] buf)
 {
     ubyte[1024] cpy = buf;
+    volatileStore(&cpy[0], 1);
     g(cpy);
 }
 
 void g(ref ubyte[1024] buf)
 {
     ubyte[1024] cpy = buf;
+    volatileStore(&cpy[0], 2);
     f(cpy);
 }