Migrating from C++03 to C++11

Asked Jan 15 '13 at 16:46

Active Dec 06 '15 at 10:49

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Possible Duplicate:
What breaking changes are introduced in C++11?

I've read many things about C++11 or C++0x and currently, I have 2 average size projects under development.

One of them uses Qt framework and another uses Poco. In both of them we're using GCC with default mode (C++03).

I think both of Qt and Poco have written in C++03 specifications, but I wonder if is it OK to enable --std=c++0x in our projects and use new features without any special incompatibilities?

Does someone have any experiment to use large C++03-libraries (specially Qt and Poco) within C++11 projects and face to some issues, if yes, which issues?

Note: This is not a duplicated question. I'm specially speaking about two famous frameworks Qt and Poco. Someone may say "In my experience, Don't use X class of Qt with this Y new feature of C++11...."

edited May 23 '17 at 11:59

Community

asked Jan 15 '13 at 16:46

masoud

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You might want to read [this](http://stackoverflow.com/questions/6399615/what-breaking-changes-are-introduced-in-c11) – Rapptz Jan 15 '13 at 16:50
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https://blog.qt.digia.com/blog/2011/05/26/cpp0x-in-qt/ – Andrew Tomazos Jan 15 '13 at 17:05
What compiler version are you using? the `-std=c++0x` seems to indicate an old version, in which case it might be painful to find issues that have been corrected/changed or fight partial support for the features – David Rodríguez - dribeas Jan 15 '13 at 17:12
@DavidRodríguez-dribeas: gcc 4.6.2 – masoud Jan 15 '13 at 17:22
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GCC 4.6 is getting pretty old, and moreover it has performance regressions. http://stackoverflow.com/questions/13238183/c-vector-array-operator-high-computational-cost/13238513#13238513 You should update irrespective. – OmnipotentEntity Jan 15 '13 at 17:56
@OmnipotentEntity: Useful, I will upgrade my GCC – masoud Jan 15 '13 at 17:58

Migrating from C++03 to C++11

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