How to fix warning: extended initializer lists?

Question

There are similar questions here and elsewhere but none that fix this issue.

gcc 4.6.3 on Ubuntu 12.04.5 produces the following warning

extended initializer lists only available with -std=c++0x or -std=gnu++0x [enabled by default]

for the following code

// Mutex.h
class CMutex
{
    ...
private:
    pthread_mutex_t m_plock;
};

// Mutex.cpp
CMutex::CMutex()
{
    m_plock = PTHREAD_MUTEX_INITIALIZER;
}

How is this warning best resolved?

By adding `-std=c++0x` option as the message suggests? – MikeCAT Jun 09 '16 at 13:37 — MikeCAT, Jun 09 '16 at 13:37

score 2 · Accepted Answer · answered Jun 09 '16 at 13:39

GCC just wants you to know that you're using C++11 features (in case you didn't intend to), even if it allows them by default. To disable the warning just add the switch that it is suggesting, i.e. -std=c++0x to let it know this is indeed your intention.

How to fix warning: extended initializer lists?

1 Answers1