From: Paul Eggert <eggert@cs.ucla.edu>
Date: Mon, 10 Aug 2015 06:23:14 +0000 (-0700)
Subject: Fix DPI calculation when Xft/DPI is default
X-Git-Tag: emacs-25.0.90~1373^2~70
X-Git-Url: https://code.delx.au/gnu-emacs/commitdiff_plain/a9bb9d8fc22417d1fafd8001d89a91c33c8b39ec

Fix DPI calculation when Xft/DPI is default

* src/xsettings.c (parse_settings): Don't use Xft/DPI default
value of -1, which evaluates to 2**32 - 1 (Bug#21152).
Remove unnecessary cast while we're in the neighborhood.
---

diff --git a/src/xsettings.c b/src/xsettings.c
index 028487b91e..f6a8bfdebd 100644
--- a/src/xsettings.c
+++ b/src/xsettings.c
@@ -537,10 +537,10 @@ parse_settings (unsigned char *prop,
               else
                 settings->seen &= ~SEEN_RGBA;
             }
-          else if (strcmp (name, "Xft/DPI") == 0)
+          else if (strcmp (name, "Xft/DPI") == 0 && ival != (CARD32) -1)
             {
               settings->seen |= SEEN_DPI;
-              settings->dpi = (double)ival/1024.0;
+              settings->dpi = ival / 1024.0;
             }
           else if (strcmp (name, "Xft/lcdfilter") == 0)
             {