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Bug 902: set_hline: Allocate memory for one more character cell.

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This commit is contained in:
Kalle Olavi Niemitalo 2006-12-20 00:44:08 +02:00 committed by Kalle Olavi Niemitalo
parent ebfa156a70
commit 47f7ba24c6
1 changed files with 13 additions and 1 deletions
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14
src/document/html/renderer.c
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@ -404,8 +404,20 @@ set_hline(struct html_context *html_context, unsigned char *chars, int charslen,
return 0;
if (part->document) {
/* Reallocate LINE(y).chars[] to large enough. The
* last parameter of realloc_line is the index of the
* last element to which we may want to write,
* i.e. one less than the required size of the array.
* Compute the required size by assuming that each
* byte of input will need at most one character cell.
* (All double-cell characters take up at least two
* bytes in UTF-8, and there are no triple-cell or
* wider characters.) However, if there already is an
* incomplete character in part->document->buf, then
* the first byte of input can result in a double-cell
* character, so we must reserve one extra element. */
if (realloc_line(html_context, part->document,
Y(y), X(x) + charslen - 1))
Y(y), X(x) + charslen))
return 0;
if (utf8) {
unsigned char *end = chars + charslen;