From efac8d6671017a4977e35e212bac847c7fa3f480 Mon Sep 17 00:00:00 2001
From: Thomas Gambier <thomas.gambier@nexedi.com>
Date: Thu, 15 Jan 2026 10:39:06 +0100
Subject: [PATCH] Fix overwriting of g_uiDevNum during memcpy

The following line in project.c in function GetFirstDetectionMatch was
copying 100 bytes in an array of 64 bytes erasing several global
variables like g_uiDevNum:

memcpy(TypeName,binfo.TypeName, sizeof(binfo.TypeName));
---
 Macro.h | 3 ++-
 dpcmd.c | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/Macro.h b/Macro.h
index acb6abf..995833b 100755
--- a/Macro.h
+++ b/Macro.h
@@ -79,8 +79,9 @@ typedef enum {
 	GET_FW_STATUS   					=0x9B, //0x9A: Set  //0x9B:Get
 } USB_CMD;
 
+#define TYPENAME_MAX_LEN 64
 typedef struct ChipInfo {
-    char TypeName[100];
+    char TypeName[TYPENAME_MAX_LEN];
 	char ICType[16];
     size_t UniqueID;
 	size_t ChipIDMask;
diff --git a/dpcmd.c b/dpcmd.c
index e4c60f1..0ce6f03 100644
--- a/dpcmd.c
+++ b/dpcmd.c
@@ -45,7 +45,7 @@ unsigned int g_uiDevNum = 0;
 unsigned int g_uiDeviceID = 0;
 unsigned int g_IO1Select = 0;
 unsigned int g_IO4Select = 1;
-char g_strTypeName[64] = "\0";
+char g_strTypeName[TYPENAME_MAX_LEN] = "\0";
 
 bool g_bEnableVpp = false;
 int g_StartupMode = STARTUP_APPLI_SF_1;