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C++ static initialization ordering

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0

$begingroup$

I have inherited legacy code containing static initialization order problems:

// A.hpp
class A
public:
 static A A1;
 A(...);
;

// A.cpp
A A::A1(...);

// B.cpp
#include "A.hpp"
A MY_FAVORITE_A = A::A1;

This fails when MY_FAVORITE_A is initialized before A::A1.

I'm trying to ensure that they are initialized in the proper order without replacing A::A1 with a function. Here's the modified code. Will it work reliably?

// A.h
class A
public:
 static A A1;
 A(...);
private:
 class Initializer 
 public:
 Initializer();
 
;

namespace 
 int a_initializer = A::initialize_statics();


// A.cpp
A MY_FAVORITE_A;

A::initialize_statics()

 static A::Initializer initializer;
 return 0;


A::Initializer::Initializer()

 A::A1 = A(...);

B.cpp is unchanged.

c++ c++14

share

asked 2 mins ago

kevin clinekevin cline

32516

$endgroup$

add a comment | 

0

$begingroup$

I have inherited legacy code containing static initialization order problems:

// A.hpp
class A
public:
 static A A1;
 A(...);
;

// A.cpp
A A::A1(...);

// B.cpp
#include "A.hpp"
A MY_FAVORITE_A = A::A1;

This fails when MY_FAVORITE_A is initialized before A::A1.

I'm trying to ensure that they are initialized in the proper order without replacing A::A1 with a function. Here's the modified code. Will it work reliably?

// A.h
class A
public:
 static A A1;
 A(...);
private:
 class Initializer 
 public:
 Initializer();
 
;

namespace 
 int a_initializer = A::initialize_statics();


// A.cpp
A MY_FAVORITE_A;

A::initialize_statics()

 static A::Initializer initializer;
 return 0;


A::Initializer::Initializer()

 A::A1 = A(...);

B.cpp is unchanged.

c++ c++14

share

asked 2 mins ago

kevin clinekevin cline

32516

$endgroup$

add a comment | 

$begingroup$

I have inherited legacy code containing static initialization order problems:

// A.hpp
class A
public:
 static A A1;
 A(...);
;

// A.cpp
A A::A1(...);

// B.cpp
#include "A.hpp"
A MY_FAVORITE_A = A::A1;

This fails when MY_FAVORITE_A is initialized before A::A1.

I'm trying to ensure that they are initialized in the proper order without replacing A::A1 with a function. Here's the modified code. Will it work reliably?

// A.h
class A
public:
 static A A1;
 A(...);
private:
 class Initializer 
 public:
 Initializer();
 
;

namespace 
 int a_initializer = A::initialize_statics();


// A.cpp
A MY_FAVORITE_A;

A::initialize_statics()

 static A::Initializer initializer;
 return 0;


A::Initializer::Initializer()

 A::A1 = A(...);

B.cpp is unchanged.

c++ c++14

share

asked 2 mins ago

kevin clinekevin cline

32516

$endgroup$

// A.hpp
class A
public:
 static A A1;
 A(...);
;

// A.cpp
A A::A1(...);

// B.cpp
#include "A.hpp"
A MY_FAVORITE_A = A::A1;

// A.h
class A
public:
 static A A1;
 A(...);
private:
 class Initializer 
 public:
 Initializer();
 
;

namespace 
 int a_initializer = A::initialize_statics();


// A.cpp
A MY_FAVORITE_A;

A::initialize_statics()

 static A::Initializer initializer;
 return 0;


A::Initializer::Initializer()

 A::A1 = A(...);

share

asked 2 mins ago

kevin clinekevin cline

32516

share

asked 2 mins ago

kevin clinekevin cline

32516

asked 2 mins ago

kevin clinekevin cline

32516

asked 2 mins ago

kevin clinekevin cline

32516