sacc

commit 9041f6140da12aadc5c08ff33f6a67b2c5a1bfd9
parent 02b786ac6c63da345c297bf47563d00985dedcb6
Author: Quentin Rameau <quinq@fifth.space>
Date:   Fri, 23 Jun 2017 20:56:47 +0200

Fix potential underflow in item counting

Diffstat:
sacc.c
 | 
6
++++--

1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/sacc.c b/sacc.c
@@ -261,9 +261,11 @@ molddiritem(char *raw)
 
 	for (crlf = raw, nitems = 0; p = strstr(crlf, "\r\n"); ++nitems)
 		crlf = p+2;
-	if (--nitems < 1)
+	if (nitems <= 1)
 		return NULL;
-	if (strcmp(crlf-3, ".\r\n"))
+	if (!strcmp(crlf-3, ".\r\n"))
+		--nitems;
+	else
 		fprintf(stderr, "Parsing error: missing .\\r\\n last line\n");
 
 	dir = xmalloc(sizeof(Dir));