Re: [Bug-apl] A few problems

[vvs]

On Sat, Feb 2, 2019 at 9:08 PM Dr. Jürgen Sauermann
<address@hidden> wrote:
> thanks for reporting this. Could you please give an example for the gcc 
> warnings> I am using
> g++  4 .8.4 and I am not getting the warnings.

Of course. Here:

g++ -DHAVE_CONFIG_H -I. -I..    -Wall -I sql -Wold-style-cast -Werror
-I/usr/include   -rdynamic -g -O2 -MT apl-main.o -MD -MP -MF
.deps/apl-main.Tpo -c -o apl-main.o `test -f 'main.cc' || echo
'./'`main.cc
In file included from UTF8_string.hh:28,
                 from LibPaths.hh:24,
                 from Command.hh:27,
                 from main.cc:34:
Simple_string.hh: In instantiation of ‘void Simple_string<T,
has_destructor>::pop() [with T = Shape; bool has_destructor = false]’:
Quad_CR.hh:139:27:   required from here
Simple_string.hh:170:20: error: ‘void* memset(void*, int, size_t)’
clearing an object of non-trivial type ‘class Shape’; use assignment
or value-initialization instead [-Werror=class-memaccess]
              memset(items + items_valid, 0, sizeof(T));
              ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from PrintBuffer.hh:28,
                 from Cell.hh:30,
                 from CharCell.hh:24,
                 from Value.hh:24,
                 from Command.hh:28,
                 from main.cc:34:
Shape.hh:31:7: note: ‘class Shape’ declared here
 class Shape
       ^~~~~
In file included from UTF8_string.hh:28,
                 from LibPaths.hh:24,
                 from Command.hh:27,
                 from main.cc:34:
Simple_string.hh: In instantiation of ‘void Simple_string<T,
has_destructor>::pop() [with T = SvoPid; bool has_destructor =
false]’:
Simple_string.hh:178:70:   required from ‘void Simple_string<T,
has_destructor>::shrink(ShapeItem) [with T = SvoPid; bool
has_destructor = false; ShapeItem = long long int]’
ProcessorID.hh:100:26:   required from here
Simple_string.hh:170:20: error: ‘void* memset(void*, int, size_t)’
clearing an object of type ‘struct SvoPid’ with no trivial
copy-assignment; use assignment or value-initialization instead
[-Werror=class-memaccess]
              memset(items + items_valid, 0, sizeof(T));
              ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from Svar_DB.hh:30,
                 from Symbol.hh:30,
                 from UserFunction.hh:29,
                 from Macro.hh:24,
                 from main.cc:38:
ProcessorID.hh:65:8: note: ‘struct SvoPid’ declared here
 struct SvoPid
        ^~~~~~
In file included from UTF8_string.hh:28,
                 from LibPaths.hh:24,
                 from Command.hh:27,
                 from main.cc:34:
Simple_string.hh: In instantiation of ‘void Simple_string<T,
has_destructor>::pop() [with T = ProcAuth; bool has_destructor =
false]’:
Simple_string.hh:178:70:   required from ‘void Simple_string<T,
has_destructor>::shrink(ShapeItem) [with T = ProcAuth; bool
has_destructor = false; ShapeItem = long long int]’
ProcessorID.hh:101:28:   required from here
Simple_string.hh:170:20: error: ‘void* memset(void*, int, size_t)’
clearing an object of type ‘struct ProcAuth’ with no trivial
copy-assignment; use assignment or value-initialization instead
[-Werror=class-memaccess]
              memset(items + items_valid, 0, sizeof(T));
              ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from Svar_DB.hh:30,
                 from Symbol.hh:30,
                 from UserFunction.hh:29,
                 from Macro.hh:24,
                 from main.cc:38:
ProcessorID.hh:76:8: note: ‘struct ProcAuth’ declared here
 struct ProcAuth
        ^~~~~~~~
cc1plus: all warnings being treated as errors