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description: avoid divide-by-zero condition for certain font files and warn about it
bug: https://bugs.winehq.org/show_bug.cgi?id=38762
bug-debian: https://bugs.debian.org/788809
--- a/dlls/gdi32/freetype.c
+++ b/dlls/gdi32/freetype.c
@@ -5704,6 +5704,13 @@ found_face:
if (scale > 2 && scaled_height - height > face->size.height / 4) scale--;
/* The jump between unscaled and doubled is delayed by 1 */
else if (scale == 2 && scaled_height - height > (face->size.height / 4 - 1)) scale--;
+
+ if (face->size.height == 0) {
+ scale = 1;
+ WARN("the font file %s (%s) has zero face height!\n",
+ debugstr_w(face->file), debugstr_w(face->FullName));
+ }
+
ret->scale_y = scale;
width = face->size.x_ppem >> 6;
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