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initializing static members of class
Hello,
is there any compiler option for g++ for initializing static members of the
class.
Due to some unknown reason, static member in one of our c++ application is
not getting initialized properly.
Please help me on this.
Thanks,
Prakash
On 28 Maj, 16:25, "John" <prakash.mi@gmail.com> wrote:
> Hello, > is there any compiler option for g++ for initializing static members of the
> class.
> Due to some unknown reason, static member in one of our c++ application is
> not getting initialized properly.
code, but you have not shown us any code so we can't tell.
--
Erik Wikstrm
John wrote: > Hello, > is there any compiler option for g++ for initializing static members of
> the class.
> Due to some unknown reason, static member in one of our c++ application
> is not getting initialized properly.
sometimes? In that case, I doubt that it has a compiler switch to turn that
off.
"John" <prakash.mi @gmail.com> wrote: > is there any compiler option for g++ for initializing static > members of the class?
not the compiler.
> For some unknown reason, static member in one of our c++
> application is not getting initialized properly.
Probably because the programmer failed to initialize it.
> Please help me on this.
Ok.
Initialize the static members in the source code (not the
header!) for the module.
Example: I have a module called blat1, with header blat1.h
and source blat1.cpp. This module has a class called dumbo
with a static member called asdf. Then, initialize asdf in
blat.cpp, like so:
// in blat1.h:
class dumbo
{
public:
static int asdf;
}
// in blat1.cpp, at global scope:
dumbo::asdf (42);
--
Cheers,
Robbie Hatley
East Tustin, CA, USA
lonewolf aatt well dott com
triple-dubya dott tustinfreezone dott org
On 5 28 , 11 47 , "Robbie Hatley" <bogus.addr@no.spam> wrote:
> "John" <prakash.mi @gmail.com> wrote: > > is there any compiler option for g++ for initializing static > > members of the class? > Not that I know of. Normally, the programmer initializes that,
> not the compiler.
> > For some unknown reason, static member in one of our c++
> > application is not getting initialized properly.
> Probably because the programmer failed to initialize it.
> > Please help me on this.
> Ok.
> Initialize the static members in the source code (not the
> header!) for the module.
> Example: I have a module called blat1, with header blat1.h
> and source blat1.cpp. This module has a class called dumbo
> with a static member called asdf. Then, initialize asdf in
> blat.cpp, like so:
> // in blat1.h:
> class dumbo
> {
> public:
> static int asdf;
> }
> // in blat1.cpp, at global scope:
> dumbo::asdf (42);
int dumbo::asdf=42;
comp.lang.c++ wrote: > On 528, 11?47, "Robbie Hatley" <bogus.addr @no.spam> wrote: >> "John" <prakash.mi @gmail.com> wrote: >>> is there any compiler option for g++ for initializing static >>> members of the class? >> Not that I know of. Normally, the programmer initializes that,
>> not the compiler.
>>> For some unknown reason, static member in one of our c++
>>> application is not getting initialized properly.
>> Probably because the programmer failed to initialize it.
>>> Please help me on this.
>> Ok.
>> Initialize the static members in the source code (not the
>> header!) for the module.
>> Example: I have a module called blat1, with header blat1.h
>> and source blat1.cpp. This module has a class called dumbo
>> with a static member called asdf. Then, initialize asdf in
>> blat.cpp, like so:
>> // in blat1.h:
>> class dumbo
>> {
>> public:
>> static int asdf;
>> }
>> // in blat1.cpp, at global scope:
>> dumbo::asdf (42);
> maybe this works
> int dumbo::asdf=42;
int dumbo::asdf(42);
(that's what Robbie probably meant).
V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask
On May 28, 7:30 pm, Erik Wikstrm <eri@student.chalmers.se> wrote:
> On 28 Maj, 16:25, "John" <prakash.mi @gmail.com> wrote: > > Hello,
> > is there any compiler option for g++ for initializing static members of the
> > class.
> > Due to some unknown reason, static member in one of our c++ application is
> > not getting initialized properly.
> Most probable reason for this is that you do not initialize it in the
> code, but you have not shown us any code so we can't tell.
> --
> Erik Wikstrm
Here is the code:
Application is using below mentioned template class which is declared
as static in RuleEngine.h class file.
static RWTPtrHashDictionary<RWCString, RuleClass
RWDefHArgs(RWCString)>ruleHash;
RWTPtrHashDictionary<RWCString, RuleClass RWDefHArgs(RWCString)>
RuleEngine::ruleHash(RWCString::hash);
Above line definition/initialization for ruleHash is found in
RuleEngine.C at the beginning of the file.
Here is sample piece of code where ruleHash is used. This code is
RuleEngine.C. I am calling insertRule(this) static method from
RuleClass.h class file.
Void RuleEngine::insertRule( RuleClass* newRule )
{
RuleClass* rule = NULL;
if( 0 != ruleHash.entries() )
............
Core dump....
}
Application is using template object ruleHash to call entries()
method.
I am getting core dump at releHash.entries() line. Its not only with
entries method, it crashes for any methods of RWTPtrHashDictionary.
I have also tried with other template class RWTValDlist<RWCString> to
test whether it is problem with deprecated RWTPtrHashDictionary
template.
But I see that application crashes for RWTValDlist template too.
Please help me.
Thanks,
Prakash
On May 28, 9:29 pm, prakash.mi@gmail.com wrote:
> On May 28, 7:30 pm, Erik Wikstrm <eri @student.chalmers.se> wrote: > > On 28 Maj, 16:25, "John" <prakash.mi@gmail.com> wrote:
> > > Hello,
> > > is there any compiler option for g++ for initializing static members of the
> > > class.
> > > Due to some unknown reason, static member in one of our c++ application is
> > > not getting initialized properly.
> > Most probable reason for this is that you do not initialize it in the
> > code, but you have not shown us any code so we can't tell.
> > --
> > Erik Wikstrm
> FYI
> Here is the code:
> Application is using below mentioned template class which is declared
> as static in RuleEngine.h class file.
> static RWTPtrHashDictionary<RWCString, RuleClass
> RWDefHArgs(RWCString)>ruleHash;
> RWTPtrHashDictionary<RWCString, RuleClass RWDefHArgs(RWCString)>
> RuleEngine::ruleHash(RWCString::hash);
> Above line definition/initialization for ruleHash is found in
> RuleEngine.C at the beginning of the file.
> Here is sample piece of code where ruleHash is used. This code is
> RuleEngine.C. I am calling insertRule(this) static method from
> RuleClass.h class file.
> Void RuleEngine::insertRule( RuleClass* newRule )
> {
> RuleClass* rule = NULL;
> if( 0 != ruleHash.entries() )
> ............
> Core dump....
> }
> Application is using template object ruleHash to call entries()
> method.
> I am getting core dump at releHash.entries() line. Its not only with
> entries method, it crashes for any methods of RWTPtrHashDictionary.
> I have also tried with other template class RWTValDlist<RWCString> to
> test whether it is problem with deprecated RWTPtrHashDictionary
> template.
> But I see that application crashes for RWTValDlist template too.
> Please help me.
> Thanks,
> Prakash
RuleEngine::ruleHash(and result is unpredictable)...
Use Singleton pattern to fix that.
Ah, yes... good catch. For some reason I tend to forget
to include the type declarator when defining static class
members. My compiler keeps yelling at me about that. :-)
--
Cheers,
Robbie Hatley
East Tustin, CA, USA
lonewolf aatt well dott com
triple-dubya dott tustinfreezone dott org
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