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

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15803 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Abdelrazak Younes 2006-11-08 11:32:33 +00:00
parent 12df886453
commit 60cf37471d
1 changed files with 3 additions and 0 deletions
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3
src/frontends/qt4/GuiFontMetrics.C
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@ -148,6 +148,9 @@ int GuiFontMetrics::width(QString const & ucs2) const
int GuiFontMetrics::signedWidth(docstring const & s) const int GuiFontMetrics::signedWidth(docstring const & s) const
{ {
if (s.empty())
return 0;
if (s[0] == '-') if (s[0] == '-')
return -width(&(s[1]), s.length() - 1); return -width(&(s[1]), s.length() - 1);
else else