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dwrite: Don't crash on uninitialized cached and factory fields in dwritefontface_Release. 

The function may be called with the fields uninitialized from
create_fontface when init_font_data fails.

Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2017-04-27 16:27:33 +02:00 committed by Alexandre Julliard
parent 6bc8ecafe8
commit e98cdc3215
1 changed files with 5 additions and 10 deletions
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15
dlls/dwrite/font.c
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@ -501,8 +501,10 @@ static ULONG WINAPI dwritefontface_Release(IDWriteFontFace4 *iface)
heap_free(This->glyphs[i]);
freetype_notify_cacheremove(iface);
factory_release_cached_fontface(This->cached);
IDWriteFactory4_Release(This->factory);
if (This->cached)
factory_release_cached_fontface(This->cached);
if (This->factory)
IDWriteFactory4_Release(This->factory);
heap_free(This);
}
@ -4283,7 +4285,7 @@ HRESULT create_fontface(const struct fontface_desc *desc, struct list *cached_li
*ret = NULL;
fontface = heap_alloc(sizeof(struct dwrite_fontface));
fontface = heap_alloc_zero(sizeof(struct dwrite_fontface));
if (!fontface)
return E_OUTOFMEMORY;
@ -4301,11 +4303,6 @@ HRESULT create_fontface(const struct fontface_desc *desc, struct list *cached_li
fontface->ref = 1;
fontface->type = desc->face_type;
fontface->file_count = desc->files_number;
memset(&fontface->cmap, 0, sizeof(fontface->cmap));
memset(&fontface->vdmx, 0, sizeof(fontface->vdmx));
memset(&fontface->gasp, 0, sizeof(fontface->gasp));
memset(&fontface->cpal, 0, sizeof(fontface->cpal));
memset(&fontface->colr, 0, sizeof(fontface->colr));
fontface->cmap.exists = TRUE;
fontface->vdmx.exists = TRUE;
fontface->gasp.exists = TRUE;
@ -4313,7 +4310,6 @@ HRESULT create_fontface(const struct fontface_desc *desc, struct list *cached_li
fontface->colr.exists = TRUE;
fontface->index = desc->index;
fontface->simulations = desc->simulations;
memset(fontface->glyphs, 0, sizeof(fontface->glyphs));
for (i = 0; i < fontface->file_count; i++) {
hr = get_stream_from_file(desc->files[i], &fontface->streams[i]);
@ -4338,7 +4334,6 @@ HRESULT create_fontface(const struct fontface_desc *desc, struct list *cached_li
}
}
fontface->flags = 0;
fontface->charmap = freetype_get_charmap_index(&fontface->IDWriteFontFace4_iface, &is_symbol);
if (is_symbol)
fontface->flags |= FONTFACE_IS_SYMBOL;