Compiler error C2252/C2258 in VC6++ - and fix

[hanberg]

As You might know by now v0.262 can't compile under vc6.

The compiler reports 292 errors refering to error C2252 and C2258

--------------------Configuration: client - Win32 Debug--------------------
Compiling...
Util.cpp
g:\projects\dcplusplus-0.262-src-mod\client\util.h(52) : error C2258: illegal pure syntax, must be '= 0'
g:\projects\dcplusplus-0.262-src-mod\client\util.h(57) : see reference to class template instantiation 'PointerHash<T>' being compiled
g:\projects\dcplusplus-0.262-src-mod\client\util.h(52) : error C2252: 'bucket_size' : pure specifier can only be specified for functions
g:\projects\dcplusplus-0.262-src-mod\client\util.h(57) : see reference to class template instantiation 'PointerHash<T>' being compiled
g:\projects\dcplusplus-0.262-src-mod\client\util.h(53) : error C2258: illegal pure syntax, must be '= 0'
g:\projects\dcplusplus-0.262-src-mod\client\util.h(57) : see reference to class template instantiation 'PointerHash<T>' being compiled
g:\projects\dcplusplus-0.262-src-mod\client\util.h(53) : error C2252: 'min_buckets' : pure specifier can only be specified for functions
g:\projects\dcplusplus-0.262-src-mod\client\util.h(57) : see reference to class template instantiation 'PointerHash<T>' being compiled
Error executing cl.exe.

Util.obj - 4 error(s), 0 warning(s)

The problem code is

Code: Select all

static const size_t bucket_size = 4;
static const size_t min_buckets = 8;

It's a bug in VC6++.

The compiler does not support in-place initialization of static const integral member data as specified in the C++ standard (section 9.2) quoted in the following:

4 - A member-declarator can contain a constant-initializer only if it declares a static member of integral or enumeration type.

At least the folowing code will let You build the exe file

Code: Select all

#if _MSC_VER == 1200
   enum {bucket_size = 4};
   enum {min_buckets = 8};
#else
   static const size_t bucket_size = 4;
   static const size_t min_buckets = 8;
#endif // _MSC_VER == 1200

Hope it helps someone than me ...

[GICodeWarior]

Thank you!

Now I can compile...

~GICodeWarrior