From: Abdelrazak Younes <younes@lyx.org>
Date: Wed, 8 Nov 2006 11:32:33 +0000 (+0000)
Subject: Fix potential crash. Passing an empty string happens _very_ often.
X-Git-Tag: 1.6.10~11983
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=60cf37471dbcbb36b0d7f9ec8a6994350ba22424;p=features.git

Fix potential crash. Passing an empty string happens _very_ often.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15803 a592a061-630c-0410-9148-cb99ea01b6c8
---

diff --git a/src/frontends/qt4/GuiFontMetrics.C b/src/frontends/qt4/GuiFontMetrics.C
index 0a1138bfb5..d1ed0ecea8 100644
--- a/src/frontends/qt4/GuiFontMetrics.C
+++ b/src/frontends/qt4/GuiFontMetrics.C
@@ -148,6 +148,9 @@ int GuiFontMetrics::width(QString const & ucs2) const
 
 int GuiFontMetrics::signedWidth(docstring const & s) const
 {
+	if (s.empty())
+		return 0;
+
 	if (s[0] == '-')
 		return -width(&(s[1]), s.length() - 1);
 	else