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dwrite: Do not segfault when there are no typographic features to return. 

Signed-off-by: Giovanni Mascellani <gmascellani@codeweavers.com>
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Giovanni Mascellani 2021-03-03 15:25:28 +01:00 committed by Alexandre Julliard
parent eac1ca616d
commit 65f5033702
1 changed files with 6 additions and 0 deletions
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6
dlls/dwrite/shape.c
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@ -372,6 +372,12 @@ HRESULT shape_get_typographic_features(struct scriptshaping_context *context, co
shape_get_script_lang_index(context, scripts, MS_GPOS_TAG, &script_index, &language_index);
opentype_get_typographic_features(&context->cache->gpos, script_index, language_index, &t);
if (t.count == 0)
{
*actual_tagcount = 0;
return S_OK;
}
/* Sort and remove duplicates. */
qsort(t.tags, t.count, sizeof(*t.tags), tag_array_sorting_compare);