Re: [Orclib-devel] trouble building the C++ example code

[Christoph D. <du...@me...>]

I gave it a try on a new SLES12 installation.

The code now does compile with g++ (4.8.3) without warning.

clang 3.5.1 is not quite happy, however:
1) before class Element (ocilib.hpp, line 4610) a forward declaration of 
class Iterator is needed;
     otherwise the friend declaration a few lines below fails
         class Iterator;   (add around line 4602)



2) /tmp/ocilib/include/ocilib_impl.hpp:2649:46: error: no member named 
'GetContent' in 'Lob<TLobObjectType, TLobOracleType>'
         return Lob<TLobObjectType, TLobOracleType>::GetContent();

There is no GetContent in Lob, however... there is a conversion 
operator, though:
         operator TLobObjectType() const;
I am not sure, whether the GetContent is missing, the conversion 
operator should be renamed to GetContent...



3) warnings... please check, if this is a problem
soft@sles12test:/labor/source/pakete/qt5> clang++ -c  -Wall -I 
/tmp/ocilib/include  -o /tmp/ocilibtest.o /tmp/ocilibtest.cpp
In file included from /tmp/ocilibtest.cpp:36:
In file included from /tmp/ocilib/include/ocilib.hpp:8185:
/tmp/ocilib/include/ocilib_impl.hpp:2277:38: warning: variable 'minutes' 
is uninitialized when used here [-Wuninitialized]
         SetDateTime(year, month, day, hour, minutes, seconds, 
milliseconds);
                                             ^~~~~~~
/tmp/ocilib/include/ocilib_impl.hpp:2274:47: note: initialize the 
variable 'minutes' to silence this warning
         int tmpYear, tmpMonth, tempDay, hour, minutes, seconds, 
milliseconds;
                                                      ^
                                                       = 0
/tmp/ocilib/include/ocilib_impl.hpp:2277:47: warning: variable 'seconds' 
is uninitialized when used here [-Wuninitialized]
         SetDateTime(year, month, day, hour, minutes, seconds, 
milliseconds);
                                                      ^~~~~~~
/tmp/ocilib/include/ocilib_impl.hpp:2274:56: note: initialize the 
variable 'seconds' to silence this warning
         int tmpYear, tmpMonth, tempDay, hour, minutes, seconds, 
milliseconds;
                                                               ^
                                                                = 0
/tmp/ocilib/include/ocilib_impl.hpp:2277:56: warning: variable 
'milliseconds' is uninitialized when used here [-Wuninitialized]
         SetDateTime(year, month, day, hour, minutes, seconds, 
milliseconds);
^~~~~~~~~~~~
/tmp/ocilib/include/ocilib_impl.hpp:2274:70: note: initialize the 
variable 'milliseconds' to silence this warning
         int tmpYear, tmpMonth, tempDay, hour, minutes, seconds, 
milliseconds;
^
= 0

It would be great if you could make the small fixes as to support clang 
as well.
(And maybe add a note that the C++ interface requires a somewhat newish 
compiler.)


Best regards

--
Christoph Duelli
Dipl.-Inf.
Software-Entwickler
Tel.: +49 8238/9611-38
Fax:  +49 8238/9611-99
mailto: chr...@me...




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