[PATCH] net/tap-win32: Fix gcc 14 format truncation errors

[Bernhard Beschow <shentey@gmail.com>]

The patch fixes the following errors generated by GCC 14.2:

../src/net/tap-win32.c:343:19: error: '%s' directive output may be truncated writing up to 255 bytes into a region of size 176 [-Werror=format-truncation=]
  343 |              "%s\\%s\\Connection",
      |                   ^~
  344 |              NETWORK_CONNECTIONS_KEY, enum_name);
      |                                       ~~~~~~~~~

../src/net/tap-win32.c:341:9: note: 'snprintf' output between 92 and 347 bytes into a destination of size 256
  341 |         snprintf(connection_string,
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~
  342 |              sizeof(connection_string),
      |              ~~~~~~~~~~~~~~~~~~~~~~~~~~
  343 |              "%s\\%s\\Connection",
      |              ~~~~~~~~~~~~~~~~~~~~~
  344 |              NETWORK_CONNECTIONS_KEY, enum_name);
      |              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

../src/net/tap-win32.c:242:58: error: '%s' directive output may be truncated writing up to 255 bytes into a region of size 178 [-Werror=format-truncation=]
  242 |         snprintf (unit_string, sizeof(unit_string), "%s\\%s",
      |                                                          ^~
  243 |                   ADAPTER_KEY, enum_name);
      |                                ~~~~~~~~~

../src/net/tap-win32.c:242:9: note: 'snprintf' output between 79 and 334 bytes into a destination of size 256
  242 |         snprintf (unit_string, sizeof(unit_string), "%s\\%s",
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  243 |                   ADAPTER_KEY, enum_name);
      |                   ~~~~~~~~~~~~~~~~~~~~~~~

../src/net/tap-win32.c:620:52: error: '%s' directive output may be truncated writing up to 255 bytes into a region of size 245 [-Werror=format-truncation=]
  620 |     snprintf (device_path, sizeof(device_path), "%s%s%s",
      |                                                    ^~
  621 |               USERMODEDEVICEDIR,
  622 |               device_guid,
      |               ~~~~~~~~~~~
../src/net/tap-win32.c:620:5: note: 'snprintf' output between 16 and 271 bytes into a destination of size 256
  620 |     snprintf (device_path, sizeof(device_path), "%s%s%s",
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  621 |               USERMODEDEVICEDIR,
      |               ~~~~~~~~~~~~~~~~~~
  622 |               device_guid,
      |               ~~~~~~~~~~~~
  623 |               TAPSUFFIX);
      |               ~~~~~~~~~~

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
---
 net/tap-win32.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/tap-win32.c b/net/tap-win32.c
index 7edbd71633..4a4625af2b 100644
--- a/net/tap-win32.c
+++ b/net/tap-win32.c
@@ -214,7 +214,7 @@ static int is_tap_win32_dev(const char *guid)
 
     for (;;) {
         char enum_name[256];
-        char unit_string[256];
+        char unit_string[512];
         HKEY unit_key;
         char component_id_string[] = "ComponentId";
         char component_id[256];
@@ -315,7 +315,7 @@ static int get_device_guid(
     while (!stop)
     {
         char enum_name[256];
-        char connection_string[256];
+        char connection_string[512];
         HKEY connection_key;
         char name_data[256];
         DWORD name_type;
@@ -595,7 +595,7 @@ static void tap_win32_free_buffer(tap_win32_overlapped_t *overlapped,
 static int tap_win32_open(tap_win32_overlapped_t **phandle,
                           const char *preferred_name)
 {
-    char device_path[256];
+    char device_path[512];
     char device_guid[0x100];
     int rc;
     HANDLE handle;
-- 
2.46.2