Hello, I didn't want to trouble the good people in c.l.c++, as these
are more of a compiler question than a language one.

Issue 1.

This code:
-------------------------------------
#include <vector>

typedef vector<unsigned char> bytes;
int main()
{
bytes data;
exit(0);
}
-------------------------------------
compiles fine with g++ v2.95.3, but with v3.4.3 (the most recent
version I have to hand) it fails with

xxx.cc:3: error: expected init-declarator before '<' token
xxx.cc:3: error: expected `,' or `;' before '<' token

Can someone please explain what the problem is here?

 ========================================
===
Issue 2.

This code:
-------------------------------------
#include <iostream>
#include <string>
using namespace std;
class Base
{
public:
void f(string&) {cout << "Base::f()\n";}
};

class Derived : public Base
{
public:
using Base::f;   // error here!
void f(char*) {cout << "Derived::f()\n";}
};

int main()
{
string myStr = "abc";
Derived obj;

obj.f(myStr);
}
-------------------------------------
this on is the other way round.  It compiles and runs corectly using g+
+ v3.4.3, but with v2.95.3 I get:

xx.cc:15: cannot adjust access to `void Base::f(string &)' in `class
Derived'
xx.cc:14:   because of local method `void Derived::f(char *)' with
same name

even though the function has a different signature.

I suspect my Issue 2 is an old compiler bug which has since been
fixed, but I don't understand what's happening in Issue 1.

Any advice welcome!

[ Post a follow-up to this message ]

keith@bytebrothers.co.uk wrote:
> Hello, I didn't want to trouble the good people in c.l.c++, as these
> are more of a compiler question than a language one.
>
> Issue 1.
>
> This code:
> -------------------------------------
> #include <vector>
>
> typedef vector<unsigned char> bytes;

typedef std::vector<unsigned char> bytes;

Old gcc was very slack in its use of std::
>
> I suspect my Issue 2 is an old compiler bug which has since been
> fixed, but I don't understand what's happening in Issue 1.
>
> Any advice welcome!
>
Don't use old compilers!

--
Ian Collins.

[ Post a follow-up to this message ]

On 20 Jul, 12:00, Ian Collins <ian-n...@hotmail.com> wrote:
> ke...@bytebrothers.co.uk wrote:
> 
>
> typedef std::vector<unsigned char> bytes;
>
> Old gcc was very slack in its use of std::

Bingo.  Thank you, thank you!

(as you can probably tell, I'm slowly making the 'paradigm shift' to C+
+ after 20 years of C, and stuff like that floors me every time)

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