commit 3a60b19514705f7f61908fd727d2e69565ee1947
parent dd2f298252fc21ff7d3b14296068443cb39c38d9
Author: Connor Lane Smith <[email protected]>
Date: Mon, 16 May 2011 23:35:14 +0100
fix possible overflow
Diffstat:
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/dmenu.c b/dmenu.c
@@ -31,7 +31,7 @@ static void grabkeyboard(void);
static void insert(const char *str, ssize_t n);
static void keypress(XKeyEvent *ev);
static void match(Bool sub);
-static size_t nextrune(int incr);
+static size_t nextrune(int inc);
static void paste(void);
static void readstdin(void);
static void run(void);
@@ -426,10 +426,10 @@ match(Bool sub) {
}
size_t
-nextrune(int incr) {
- size_t n, len = strlen(text);
+nextrune(int inc) {
+ ssize_t n;
- for(n = cursor + incr; n < len && (text[n] & 0xc0) == 0x80; n += incr);
+ for(n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc);
return n;
}
