From 01a4a393fbf41eee61cbe4579d49e44e4bc44969 Mon Sep 17 00:00:00 2001
From: Daniel Pouzzner <douzzer@wolfssl.com>
Date: Thu, 23 Jul 2026 18:24:19 -0500
Subject: [PATCH] wolfcrypt/src/cpuid.c: in cpuid_flag(), refactor out
 XMEMSET() to fix SEGV from gcc misoptimization.

---
 wolfcrypt/src/cpuid.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/wolfcrypt/src/cpuid.c b/wolfcrypt/src/cpuid.c
index 854a34ff53..35892b64af 100644
--- a/wolfcrypt/src/cpuid.c
+++ b/wolfcrypt/src/cpuid.c
@@ -120,8 +120,7 @@
         /* Feature leaves are only queried on known Intel and AMD CPUs. */
         if (cpuid_is_intel() || cpuid_is_amd()) {
             unsigned int reg[5];
-
-            XMEMSET(reg, '\0', sizeof(reg));
+            reg[num] = 0;
             cpuid(reg, leaf, sub);
             return ((reg[num] >> bit) & 0x1);
         }