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don't crash if builddir is suffix of sourcedir (or vice-versa)

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Change-Id: I97a6e2ebd51350cbf39c86efa5c26a376c49da95
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
(cherry picked from qtbase/b30273ec4a4ce65794fd402c6e3eb21de7bae1b9)
This commit is contained in:
Oswald Buddenhagen
2013-07-03 16:54:44 +02:00
parent 8b6c53733e
commit fd9ed1b761
1 changed files with 2 additions and 1 deletions
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3
src/shared/proparser/qmakeglobals.cpp
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@@ -237,7 +237,8 @@ void QMakeGlobals::setDirectories(const QString &input_dir, const QString &outpu
int srcLen = srcpath.length();
int dstLen = dstpath.length();
int lastSl = -1;
while (++lastSl, srcpath.at(--srcLen) == dstpath.at(--dstLen))
while (++lastSl, --srcLen, --dstLen,
srcLen && dstLen && srcpath.at(srcLen) == dstpath.at(dstLen))
if (srcpath.at(srcLen) == QLatin1Char('/'))
lastSl = 0;
source_root = srcpath.left(srcLen + lastSl);