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Re: SQL filesortcc question

Cross-posted to 2 groups.

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On 07/15/2015 04:40 PM, The Doctor wrote:
> All right to essentials on this one.
> 
> Using g++ 3.2.3 , Gmake 4.01 and Cmake 2.6.4
> 
> I get
> 
> 
> Script started on Wed Jul 15 06:45:13 2015
> doctor.nl2k.ab.ca//usr/source/mysql-5.6.25$ gmake
> [  0%] Built target INFO_BIN
> ...
> Scanning dependencies of target sql
> [ 47%] Building CXX object sql/CMakeFiles/sql.dir/sql_yacc.cc.o
> [ 47%] Building CXX object sql/CMakeFiles/sql.dir/abstract_query_plan.cc.o
> [ 47%] Building CXX object sql/CMakeFiles/sql.dir/datadict.cc.o
> [ 47%] Building CXX object sql/CMakeFiles/sql.dir/debug_sync.cc.o
> [ 47%] Building CXX object sql/CMakeFiles/sql.dir/derror.cc.o
> [ 47%] Building CXX object sql/CMakeFiles/sql.dir/des_key_file.cc.o
> [ 47%] Building CXX object sql/CMakeFiles/sql.dir/discover.cc.o
> [ 48%] Building CXX object sql/CMakeFiles/sql.dir/field.cc.o
> /usr/source/mysql-5.6.25/sql/field.cc: In member function `virtual void 
>    Field_string::make_sort_key(uchar*, unsigned int)':
> /usr/source/mysql-5.6.25/sql/field.cc:6886: warning: unused variable `uint tmp'
> [ 48%] Building CXX object sql/CMakeFiles/sql.dir/field_conv.cc.o
> [ 48%] Building CXX object sql/CMakeFiles/sql.dir/filesort.cc.o
> [ 48%] Building CXX object sql/CMakeFiles/sql.dir/filesort_utils.cc.o
> /usr/source/mysql-5.6.25/sql/filesort_utils.cc: In function `size_t 
>    <unnamed>::try_reserve(std::pair<type*, ptrdiff_t>*, int)':
> /usr/source/mysql-5.6.25/sql/filesort_utils.cc:178: parse error before `>' 
>    token

You're getting a parse error inside a C++ template function. More
specifically, it's a parse error inside the template portion of the C++
syntax for calling a templated function. Why did you think cross-posting
to comp.lang.c would be any help? I know a fair amount of C++, more than
the average person on comp.lang.c - but I can't figure out what's
causing the parse error - so you need a better C++ expert than me. It
might be an interaction between the code you've actually given us, and
the user-defined header files that you didn't give us - so I'd recommend
posting the contents of those files as well. But post it only to
comp.lang.C++

> /usr/source/mysql-5.6.25/sql/filesort_utils.cc: In member function `void 
>    Filesort_buffer::sort_buffer(const Sort_param*, unsigned int)':
> /usr/source/mysql-5.6.25/sql/filesort_utils.cc:202: `return_temporary_buffer' 
>    undeclared in namespace `std'

My copy of the C++2011 standard says that std::get_temporary_buffer<>()
and std::return_temporary_buffer<>() are both declared in <memory>,
which is not one of the headers you #included directly. Is it #included
indirectly through one of the other headers? If not, that would explain
the above error message. If that's the problem, your use of
get_temporary_buffer would probably also have generated such an error
message, if it hadn't been for the parse failure.

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SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-15 20:40 +0000
  Re: SQL filesortcc question Paavo Helde <myfirstname@osa.pri.ee> - 2015-07-15 16:08 -0500
  Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-15 17:15 -0400
    Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-15 23:22 +0000
  Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-16 09:55 +1200
    Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-15 23:23 +0000
      Re: SQL filesortcc question Bo Persson <bop@gmb.dk> - 2015-07-16 10:58 +0200
        Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-16 20:15 +0000
          Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-17 09:24 +1200
            Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-16 23:54 +0000

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