(x_produce_glyphs): Don't set it->ascent and it->descent

to negative value.

diff --git a/src/xdisp.c b/src/xdisp.c
index 2993fbe912f83c62104f53a57acdf81536d18553..6e1b06a5aeef63254dc65f17a9ef171f7bba3249 100644 (file)
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -21398,8 +21398,11 @@ x_produce_glyphs (it)
 
       it->pixel_width = cmp->pixel_width;
       it->ascent = it->phys_ascent = cmp->ascent;
+      if (it->ascent < 0)
+       it->ascent = it->phys_ascent = 0;
       it->descent = it->phys_descent = cmp->descent;
-
+      if (it->descent < 0)
+       it->descent = it->phys_descent = 0;
       if (face->box != FACE_NO_BOX)
        {
          int thick = face->box_line_width;