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gdi32: Fix empty glyph handling in the dib driver.

This commit is contained in:
Akihiro Sagawa 2013-10-01 22:03:16 +09:00 committed by Alexandre Julliard
parent 24e0e4d150
commit b138c36c11
1 changed files with 2 additions and 1 deletions
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3
dlls/gdi32/dibdrv/graphics.c
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@ -694,13 +694,14 @@ static struct cached_glyph *cache_glyph_bitmap( HDC hdc, struct cached_font *fon
if (ret != GDI_ERROR) break;
}
if (ret == GDI_ERROR) return NULL;
if (!ret) metrics.gmBlackBoxX = metrics.gmBlackBoxY = 0; /* empty glyph */
bit_count = get_glyph_depth( font->aa_flags );
stride = get_dib_stride( metrics.gmBlackBoxX, bit_count );
size = metrics.gmBlackBoxY * stride;
glyph = HeapAlloc( GetProcessHeap(), 0, FIELD_OFFSET( struct cached_glyph, bits[size] ));
if (!glyph) return NULL;
if (!ret) goto done; /* zero-size glyph */
if (!size) goto done; /* empty glyph */
if (bit_count == 8) pad = padding[ metrics.gmBlackBoxX % 4 ];