Build log different to build messages

[smallB]

If I set in compiler options compiler logging to full command line and try to compile this (erroneous program):

Code Select Expand

#include <iostream>
#include <typeinfo>
#include "Demangle.h"
using namespace std;
template<class... Types>
struct X
{

};

template<class A,class B,class... Types>
struct X<A,B,Types...>
{
    typedef A type;
    typedef X<B,Types...> next;
    A head;

};

//template<class A,class... Types>
//struct X<A,Types...>
//{
//    typedef A type;
//    typedef X<Types...> next;
//    A head;
//
//};

template<class B>
struct X<B>
{
    B head;
    typedef B type;
    typedef B next;
};

template<int index, class Sequence>
struct get
{
        typedef typename get<index - 1,typename Sequence::next>::type type;
};

template<class Sequence>
struct get<0,Sequence>
{
    typedef typename Sequence::type type;
};


int main()
{
    typedef X<int,double,char> x;
    //cout << demangle(x.get_head());
     cout << demangle(typename get<3,x>::type());
    return 0;
}

, from build messages (inside cb):

Code Select Expand

d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp|40|  recursively instantiated from 'get<2, X<double, char> >'|
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:40|71|instantiated from 'get<3, X<int, double, char> >'|
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:54|40|instantiated from here|
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp|46|error: 'char' is not a class, struct, or union type|
||=== Build finished: 2 errors, 0 warnings (0 minutes, 0 seconds) ===|
but from log file:

Code Select Expand

Build started on: 26-10-2011 at 10:24.35
Build ended on: 26-10-2011 at 10:24.36

-------------- Build: Debug in Meta_Sequence ---------------
g++ -Wall -fexceptions -g -Wshadow -Winit-self -Wredundant-decls -Wcast-align -Wundef -Wfloat-equal -Winline -Wunreachable-code -Wmissing-declarations -Wmissing-include-dirs -Wswitch-enum -Wswitch-default -Weffc++ -Wmain -pedantic-errors -pedantic -std=c++0x -Wfatal-errors -Wextra -Wall -g -ID:\Libraries\boost_1_47_0\boost_1_47_0 -ID:\Libraries\Art_lib -Id:\Excersizes\metaprogramming_excersizes\Meta_Sequence -Id:\Excersizes\metaprogramming_excersizes\Meta_Sequence -c d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp -o obj\Debug\main.o
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp: In instantiation of 'get<0, char>':
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:40:71: recursively instantiated from 'get<2, X >'
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:40:71: instantiated from 'get<3, X >'
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:54:40: instantiated from here
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:46:37: error: 'char' is not a class, struct, or union type
compilation terminated due to -Wfatal-errors.
Process terminated with status 1 (0 minutes, 0 seconds)
2 errors, 0 warnings (0 minutes, 0 seconds)
things look even worse when I try to open this file internally via cb(in cb's html viewer).

[zabzonk]

And your problem is ... what?

[smallB]

Hi Neil, my problem is that in build log specializations of 'get' meta function are not listed with their correct types. I think that log should be as detailed as possible, and this isn't.

[MortenMacFly]

Hi Neil, my problem is that in build log specializations of 'get' meta function are not listed with their correct types. I think that log should be as detailed as possible, and this isn't.

The build log shows everything the compiler tells you. If that is not enough, complain to the GCC guys.

[smallB]

Hi Morten,
But in cb I'm getting correct types displayed: get<1,X<int,double>>, this isn't the case in log file: get<1,X>. So who is responsible for that cb or gcc?

[Jenna]

Hi Neil, my problem is that in build log specializations of 'get' meta function are not listed with their correct types. I think that log should be as detailed as possible, and this isn't.

The build log shows everything the compiler tells you. If that is not enough, complain to the GCC guys.

I can confirm this issue.
The HTML buildlog is not shown correctly in a browser, because if a "<" is followed by a character it will be treated as HTML-tag, even if it is not correct and is therefore not shown.
In his case, it's the "<double, char>" and the "<int, double, char>" part.

I just committed a fix for it.

[smallB]

Thanks jens, for a moment I thought I'm going crazy and only I can see that something isn't right.