WriteSave: allocate enough room for full session_save_file in error

Clears warning from gcc 11.2:

saveutil.c: In function ‘WriteSave’:
saveutil.c:315:75: warning: ‘%s’ directive output may be truncated
 writing up to 1023 bytes into a region of size 221 [-Wformat-truncation=]
  315 |         snprintf (msg, sizeof(msg), "%s: Error creating session save file %s",
      |                                                                           ^~
  316 |                   Argv[0], session_save_file);
      |                            ~~~~~~~~~~~~~~~~~
saveutil.c:315:9: note: ‘snprintf’ output 36 or more bytes (assuming 1059)
 into a destination of size 256
  315 |         snprintf (msg, sizeof(msg), "%s: Error creating session save file %s",
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  316 |                   Argv[0], session_save_file);
      |                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/saveutil.c b/saveutil.c
index 1b5132e..391a8b5 100644
--- a/saveutil.c
+++ b/saveutil.c
@@ -310,7 +310,7 @@ WriteSave(const char *sm_id)
 
     if (!f)
     {
-	char msg[256];
+	char msg[36 + sizeof(session_save_file)];
 
 	snprintf (msg, sizeof(msg), "%s: Error creating session save file %s", 
 		  Argv[0], session_save_file);