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Fix off-by-one bug in tor22-scan-converter.

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This makes the implementation in tor22-scan-converter match the one in
tor-scan-converter.
This commit is contained in:
Antony Lee 2019-02-11 08:48:56 +01:00 • committed by Uli Schlachter
parent 82a2477a4a
commit dfe3aa6d88
1 changed files with 5 additions and 2 deletions
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7
src/cairo-tor22-scan-converter.c
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@ -1287,12 +1287,15 @@ glitter_scan_converter_reset(
int xmax, int ymax)
{
glitter_status_t status;
int max_num_spans;
converter->xmin = 0; converter->xmax = 0;
converter->ymin = 0; converter->ymax = 0;
if (xmax - xmin > ARRAY_LENGTH(converter->spans_embedded)) {
converter->spans = _cairo_malloc_ab (xmax - xmin,
max_num_spans = xmax - xmin + 1;
if (max_num_spans > ARRAY_LENGTH(converter->spans_embedded)) {
converter->spans = _cairo_malloc_ab (max_num_spans,
sizeof (cairo_half_open_span_t));
if (unlikely (converter->spans == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);