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Prevent overflow beyond the end of string in wtf_strwidth()

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Bug-Debian: https://github.com/tats/w3m/issues/57
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Tatsuya Kinoshita
2016-12-08 01:00:42 +09:00
parent 295b1ef8f8
commit a56a8ef132
1 changed files with 2 additions and 1 deletions
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3
libwc/wtf.c
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@@ -120,8 +120,9 @@ int
wtf_strwidth(wc_uchar *p) wtf_strwidth(wc_uchar *p)
{ {
int w = 0; int w = 0;
wc_uchar *q = p + strlen(p);
while (*p) { while (p < q) {
w += wtf_width(p); w += wtf_width(p);
p += WTF_LEN_MAP[*p]; p += WTF_LEN_MAP[*p];
} }