From 765073021a3fd0ec193f89ff224aad5a3af31551 Mon Sep 17 00:00:00 2001
From: Margen67 <Margen67@users.noreply.github.com>
Date: Fri, 22 Aug 2025 01:01:23 -0700
Subject: [PATCH] [CPU/XEX] Use fmt to make hash string, check size

---
 src/xenia/cpu/xex_module.cc | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/src/xenia/cpu/xex_module.cc b/src/xenia/cpu/xex_module.cc
index 2ecd3581b..a4455173a 100644
--- a/src/xenia/cpu/xex_module.cc
+++ b/src/xenia/cpu/xex_module.cc
@@ -1127,15 +1127,13 @@ void XexModule::Precompile() {
                                 high_code);
   final_image_sha_.finalize(image_sha_bytes_);
 
-  char fmtbuf[20];
+  image_sha_str_.clear();
+  for (unsigned i = 0; i < sizeof(image_sha_bytes_); ++i) {
+    image_sha_str_ += fmt::format("{:02X}", image_sha_bytes_[i]);
+  }
 
-  for (unsigned i = 0; i < 20; ++i) {
-#ifdef XE_PLATFORM_WIN32
-    sprintf_s(fmtbuf, "%X", image_sha_bytes_[i]);
-#else
-    snprintf(fmtbuf, sizeof(fmtbuf), "%X", image_sha_bytes_[i]);
-#endif
-    image_sha_str_ += &fmtbuf[0];
+  if (image_sha_str_.size() != sizeof(image_sha_bytes_) * 2) {
+    XELOGE("XEX hash is the wrong length!");
   }
 
   // Find __savegprlr_* and __restgprlr_* and the others.