From 1608a5b40ccbb1810cea0d992b3fb45f218c0d2d Mon Sep 17 00:00:00 2001
From: xsjk <xsjk17@outlook.com>
Date: Fri, 8 May 2026 02:37:09 +0800
Subject: [PATCH] Fix CUDA minmax reduction for volatile collectors

---
 compyle/array.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/compyle/array.py b/compyle/array.py
index 5b5a034..e737ac4 100644
--- a/compyle/array.py
+++ b/compyle/array.py
@@ -97,6 +97,22 @@ def get_backend(backend=None):
 
 minmax_operator_tpl = """
 
+    __device__ ${dtype}()
+    {
+    }
+
+    __device__ ${dtype}(${dtype} const volatile &src)
+    {
+        % for prop in prop_names:
+        % if not only_max:
+        this->cur_min_${prop} = src.cur_min_${prop};
+        % endif
+        % if not only_min:
+        this->cur_max_${prop} = src.cur_max_${prop};
+        % endif
+        % endfor
+    }
+
     __device__ ${dtype} volatile &operator=(
         ${dtype} const &src) volatile
     {