From 0e6d1909b81561c2a911ef12488c17c5c581096a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fernando=20Tarl=C3=A1=20Cardoso=20Lemos?=
 <fernandotcl@gmail.com>
Date: Sun, 27 Nov 2011 17:45:24 -0200
Subject: [PATCH] Handle the case where there's no font char infos.

Fixes i3bar crash with some fonts (and possible i3 crash too).
Thanks to xeen for reporting the issue.
---
 libi3/font.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libi3/font.c b/libi3/font.c
index 5dfdf3d3..3a68cb78 100644
--- a/libi3/font.c
+++ b/libi3/font.c
@@ -64,7 +64,10 @@ i3Font load_font(const char *pattern, const bool fallback) {
         errx(EXIT_FAILURE, "Could not load font \"%s\"", pattern);
 
     /* Get the font table, if possible */
-    font.table = xcb_query_font_char_infos(font.info);
+    if (xcb_query_font_char_infos_length(font.info) == 0)
+        font.table = NULL;
+    else
+        font.table = xcb_query_font_char_infos(font.info);
 
     /* Calculate the font height */
     font.height = font.info->font_ascent + font.info->font_descent;