File chappa-unixnullbug.patch of Package alpine

---
 imap/src/c-client/mail.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

Index: alpine-2.11/imap/src/c-client/mail.c
===================================================================
--- alpine-2.11.orig/imap/src/c-client/mail.c
+++ alpine-2.11/imap/src/c-client/mail.c
@@ -3361,13 +3361,13 @@ unsigned long mail_filter (char *text,un
 			   long flags)
 {
   STRINGLIST *hdrs;
-  int notfound;
+  int notfound, fix = text[len - 1] == '\0';
   unsigned long i;
   char c,*s,*e,*t,tmp[MAILTMPLEN];
   char *src = text;
   char *dst = src;
   char *end = text + len;
-  text[len] = '\012';		/* guard against running off buffer */
+  text[fix ? len - 1 : len] = '\012';	/* guard against running off buffer */
   while (src < end) {		/* process header */
 				/* slurp header line name */
     for (s = src,e = s + MAILTMPLEN - 1,e = (e < end ? e : end),t = tmp;
@@ -3406,6 +3406,10 @@ unsigned long mail_filter (char *text,un
     }
   }
   *dst = '\0';			/* tie off destination */
+  if(fix){
+	text[len] = '\012';
+	text[len-1] = '\0';
+  }
   return dst - text;
 }