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authorEli Zaretskii <eliz@gnu.org>2016-06-29 19:14:58 +0300
committerEli Zaretskii <eliz@gnu.org>2016-06-29 19:14:58 +0300
commit21110afa2c6bc2698c172854988d306b9308d6f5 (patch)
tree3342be527849aaafd5bdd751a0840127786bbf92 /src
parent6192b6c3a4374b2cb6e02ca865e1899a04a7f7dc (diff)
downloademacs-21110afa2c6bc2698c172854988d306b9308d6f5.tar.gz
Avoid assertion violations when rendering some fonts
* src/dispextern.h (FONT_TOO_HIGH): Don't consider a font "too high" if its pixel_size value is zero. This avoids assertion violations at the end of x_produce_glyphs.
Diffstat (limited to 'src')
-rw-r--r--src/dispextern.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/dispextern.h b/src/dispextern.h
index 70358724024..7b9ae78dcd3 100644
--- a/src/dispextern.h
+++ b/src/dispextern.h
@@ -1541,7 +1541,8 @@ struct glyph_string
large vertical space. The heuristics is in the factor of 3. We
ignore the ascent and descent values reported by such fonts, and
instead go by the values reported for individual glyphs. */
-#define FONT_TOO_HIGH(ft) ((ft)->ascent + (ft)->descent > 3*(ft)->pixel_size)
+#define FONT_TOO_HIGH(ft) \
+ ((ft)->pixel_size > 0 && (ft)->ascent + (ft)->descent > 3*(ft)->pixel_size)
/***********************************************************************