From da9b8d330052916fece07f668750d07be87978c5 Mon Sep 17 00:00:00 2001
From: Raul Torres <138264735+rauletorresc@users.noreply.github.com>
Date: Tue, 6 Jan 2026 03:53:28 +0000
Subject: [PATCH] CANN: Make `valid_values` variable `static const` (#18627)

---
 ggml/src/ggml-cann/ggml-cann.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ggml/src/ggml-cann/ggml-cann.cpp b/ggml/src/ggml-cann/ggml-cann.cpp
index 7f6214e4fb..acf88db9b7 100644
--- a/ggml/src/ggml-cann/ggml-cann.cpp
+++ b/ggml/src/ggml-cann/ggml-cann.cpp
@@ -122,7 +122,7 @@ std::optional<std::string> get_env(const std::string & name) {
  * @brief Verify whether the environment variable is a valid value.
  */
 bool parse_bool(const std::string & value) {
-    std::unordered_set<std::string> valid_values = { "on", "1", "yes", "y", "enable", "true" };
+    static const std::unordered_set<std::string> valid_values = { "on", "1", "yes", "y", "enable", "true" };
     return valid_values.find(value) != valid_values.end();
 }