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Prevent overflow beyond the end of string in textfieldrep()

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Bug-Debian: https://github.com/tats/w3m/issues/79
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Tatsuya Kinoshita
2016-12-13 22:24:54 +09:00
parent a4152aaaea
commit 77d8d8d657
1 changed files with 2 additions and 0 deletions
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2
form.c
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@@ -526,6 +526,8 @@ textfieldrep(Str s, int width)
for (i = 0; i < s->length; i += c_len) { for (i = 0; i < s->length; i += c_len) {
c_type = get_mctype((unsigned char *)&s->ptr[i]); c_type = get_mctype((unsigned char *)&s->ptr[i]);
c_len = get_mclen(&s->ptr[i]); c_len = get_mclen(&s->ptr[i]);
if (i + c_len > s->length)
break;
if (s->ptr[i] == '\r') if (s->ptr[i] == '\r')
continue; continue;
k = j + get_mcwidth(&s->ptr[i]); k = j + get_mcwidth(&s->ptr[i]);