[PyQt] A gobal variable problem in sip

[D.Y Feng]

I meet a problem in my code:

hello.h:

#include<QtCore>
>
> class Hello : public QObject{
>     Q_OBJECT
> public:
>     Hello(QObject *parent = 0);
>     static int test(){
>         static int i=0;
>         qDebug()<<i++;
>         return 0;
>     }
> };
>

hello.cpp:

> #include "hello.h"
>
> const int i=Hello::test();
>
> Hello::Hello (QObject *parent)
> {
> }
>

hello.sip

%Module hello
>
> %Import QtCore/QtCoremod.sip
>
>
> class Hello : public QObject {
>
> %TypeHeaderCode
> #include "hello.h"
> %End
>
> public:
>      Hello(QObject *parent = 0);
>      static int test();
> };
>

I use the* const int i=Hello::test();* to invoke test() before
*main*function.It's uesful in factory
pattern when you want to auto  register driver.

the python test code

> import hello
> hello.Hello.test1()
>

It seems *static int i*  in *test() *changed after *import hello*

Breakpoint 1, Hello::test1 () at hello.h:8
> 8           static int test1(){
> (gdb) p i
> $1 = 0
> (gdb) p &i
> $2 = (const int *) 0x7ffff60300d0
> (gdb) c
> Continuing.
> 0
>
> Breakpoint 1, Hello::test1 () at main.h:8
> 8           static int test1(){
> (gdb) p &i
> $3 = (const int *) 0x7ffff60300d0
> (gdb) n
> 10              qDebug()<<i++;
> (gdb) p &i
> $4 = (int *) 0x7ffff62355c0       <---What happen here?
>


Thx for reading.

-- 


DY.Feng(叶毅锋)
yyfeng88625 at twitter
Department of Applied Mathematics
Guangzhou University,China
dyfeng at stu.gzhu.edu.cn
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