Add a preprocessor safeguard to prevent buffer underrun.

svn path=/trunk/; revision=4146

1 files changed, 3 insertions, 0 deletions

diff --git a/pop3.c b/pop3.c
index 7e40a7d7..9025b314 100644
--- a/pop3.c
+++ b/pop3.c
@@ -207,6 +207,9 @@ static int pop3_ok (int sock, char *argbuf)
 	else
 	    ok = PS_PROTOCOL;
 
+#if POPBUFSIZE > MSGBUFSIZE
+#error "POPBUFSIZE must not be larger than MSGBUFSIZE"
+#endif
 	if (argbuf != NULL)
 	    strcpy(argbuf,bufp);
     }