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Localization: make cache thread safe and robust against use-after-free

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The old trGettext() was not thread-safe and the returned C-strings
could be freed in the case of empty translations strings. Therefore:

1) Introduce a mutex protecting access to the cache.

2) Never change existing entries, even if the translation string is empty.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2018-06-17 23:28:44 +02:00 • committed by Tomaz Canabrava
parent 879cb73b8b
commit db0dd54c37
2 changed files with 9 additions and 4 deletions
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desktop-widgets/mainwindow.cpp
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@ -14,6 +14,7 @@
#include <QToolBar>
#include <QStatusBar>
#include "core/gettextfromc.h"
#include "core/version.h"
#include "core/subsurface-string.h"
#include "desktop-widgets/divelistview.h"