gcc warning will be initialized after

Question

I am getting a lot of these warnings from 3rd party code that I cannot modify  Is there a way to disable this warning or at least disable it for certain areas  like  pragma push pop in VC      Example   list h 1122  warning   list lt LogOutput   allocator lt LogOutput  gt   gt   node alloc   will be initialized after  list h 1117  warning     allocator lt LogOutput  gt  list lt LogOutput   allocator lt LogOutput  gt   gt   alloc

User · Accepted Answer

Make sure the members appear in the initializer list in the same order as they appear in the class

Class C {
   int a;
   int b;
   C():b(1),a(2){} //warning, should be C():a(2),b(1)
}

or you can turn -Wno-reorder

User · Answer

You can disable it with -Wno-reorder

User · Answer

If you re seeing errors from library headers and you re using GCC  then you can disable warnings by including the headers using -isystem instead of -I   Similar features exist in clang   If you re using CMake  you can specify SYSTEM for include directories

User · Answer

For those using QT having this error  add this to  pro file  QMAKE CXXFLAGS WARN ON    -Wno-reorder

User · Answer

use -Wno-reorder  man gcc is your friend

User · Answer

The order of initialization doesn   t matter  All fields are initialized in the order of their definition in their class struct  But if the order in initialization list is different gcc g   generate this warning  Only change the initialization order to avoid this  warning  But you can t define field using in initialization before its construct  It will be a runtime error  So you change the order of definition  Be careful and keep attention

User · Answer

Class C      int a     int b     C   b 1  a 2      warning  should be C   a 2  b 1      the order is important because if a is initialized before b   and a is depend on b  undefined behavior will appear

[g++] gcc warning" 'will be initialized after'

Examples related to g++

Examples related to suppress-warnings