fix possible overflow
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parent
dd2f298252
commit
3a60b19514
8
dmenu.c
8
dmenu.c
@ -31,7 +31,7 @@ static void grabkeyboard(void);
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static void insert(const char *str, ssize_t n);
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static void keypress(XKeyEvent *ev);
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static void match(Bool sub);
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static size_t nextrune(int incr);
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static size_t nextrune(int inc);
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static void paste(void);
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static void readstdin(void);
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static void run(void);
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@ -426,10 +426,10 @@ match(Bool sub) {
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}
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size_t
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nextrune(int incr) {
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size_t n, len = strlen(text);
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nextrune(int inc) {
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ssize_t n;
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for(n = cursor + incr; n < len && (text[n] & 0xc0) == 0x80; n += incr);
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for(n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc);
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return n;
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}
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