Re: C++0x, V7R3, ixlc

Hi Kelly,

On V7R3 release, C++11 feature 'Right angle bracket' is enabled by C++
compiler when option -qlanglvl=extended0x is specfied.

I notice that your example code uses another C++11 feature 'Range-based for
loop' ('for (int i : v)') which is not supported by C++ compiler.

After the for loop is commented, I can get successful compile on my 7.3
system.  I do not know why you failed to compile with
'-qlanglvl=extended0x'.  Do you have PTF SI59548 installed on your system?
If not, please install it or the latest C++ compiler PTF SI63050 and try
compile again.

I am also not sure about why you did not get compiler messages on the
screen with "-qstdlogmsg".  I can get compiler messages with
'-qlanglvl=extended' on my 7.3 system, like below.

> ixlc -oQTEMP/TEST -qlanglvl=extended -qstdlogmsg -qprint test.cpp
  The compilation failed.
  /home/renqian/rightanglebracket/test.cpp Line 000023 SUGGESTION: Try
using "-
  qlanglvl=rightanglebracket". It looks like you are trying to use the
associat
  ed C++0x feature.
  /home/renqian/rightanglebracket/test.cpp Line 000023 The text ">>" is
unexpec
  ted.

The diagnostic messsage is a little misleading.  Option
'-qlanglvl=rightanglebracket' is not supported by the compiler. You can
pass it by using compiler service option
-qcsopt='-qlanglvl=rightanglebracket'.  But this is not a suggested way and
it is not guaranteed that the compiler works properly.  We suggest to use
option '-qlanglvl=extended0x' to enable the supported C++11 features.

Thanks.

Qian Ren (Jarod)




From:	Kelly Beard <[email protected]>
To:	"Bare Metal Programming IBM i (AS/400 and iSeries)"
            <C400-L-Zwy7GipZuJhWk0Htik3J/[email protected]>
Date:	03/24/2017 03:38 AM
Subject:	[C400-L] C++0x, V7R3, ixlc
Sent by:	"C400-L" <c400-l-bounces-Zwy7GipZuJhWk0Htik3J/[email protected]>



Trying out some stuff on V7R3 and ixlc.  Notice that I am coding a double
vector thusly:

vector<vector<int>> v2;

Under an older compiler, you'll get barked at for not spacing ">>" like ">
>".  I compiled with :
ixlc -+ -oBEAK/XXX -qlanglvl=extended0x -qstdlogmsg -qprint yourmom.cpp

I simply get "Compilation failed."  (Shouldn't I be getting compiler
messages to the screen with "-qstdlogmsg"?)

In any case, the helpful joblog says:
SUGGESTION: Try using "-qlanglvl=rightanglebracket". It looks like you are
trying to use the associated C++0x
feature.


So, I try
ixlc -+ -oBEAK/XXX -qlanglvl=extended0x -qstdlogmsg -qprint
-qlanglvl=rightanglebracket yourmom.cpp

then get
INVALID COMPILING OPTIONS:-qlanglvl=rightanglebracket

:-(

#include <iostream>
#include <string>
#include <sstream>
#include <iomanip>
#include <vector>
#include <unistd.h>

using namespace std;


class yourmom {
public :
    operator string() const {
        return "your mom";
    }
};


int main(int argc, char* argv[])
{
    yourmom c;
    int i = 666;
    auto x = i;
    vector<int> v;
    vector<vector<int>> v2;

    v.push_back(111);
    v.push_back(222);
    v.push_back(333);
    v.push_back(444);

    string s = c;
    cout << s << endl;
    cout << "i=" << i << endl;
    cout << "x=" << x << endl;
    cout << "i + x=" << i + x << endl;
    for (int i : v) {
        cout << i << endl;
    }
}


--
Kelly Beard
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