I have some test code which demonstrates the problem. I know I could
solve this by just returning a pointer, but I better use a reference.
In real code, what I actually want to return is a reference to an array
of function pointers. But the code below is good enough to show the
problem.
Thanks.
#define MAX_DEC 11
static char (&MyFunc())[MAX_DEC]
{
static char init[] = "Hihowareya ";
return init;
}
class A
{
private :
char (&Ptr)[MAX_DEC];
public:
A() : Ptr(::MyFunc())
{
}
};
int main()
{
A a;
}
The error I get is "'A::Ptr' : initialization of reference member
requires a temporary variable" 5 5832 am******@gmail. com wrote: I have some test code which demonstrates the problem. I know I could solve this by just returning a pointer, but I better use a reference.
In real code, what I actually want to return is a reference to an array of function pointers. But the code below is good enough to show the problem.
Thanks.
#define MAX_DEC 11
static char (&MyFunc())[MAX_DEC] { static char init[] = "Hihowareya "; return init; }
class A { private : char (&Ptr)[MAX_DEC]; public: A() : Ptr(::MyFunc()) { }
};
int main() { A a; }
The error I get is "'A::Ptr' : initialization of reference member requires a temporary variable"
Yes, Visual C++ is buggy. The code is fine. I suggest you report this as
the ugly bug it is. Ask in 'microsoft.publ ic.vc.language' how to do that.
V
--
Please remove capital As from my address when replying by mail
* am******@gmail. com: I have some test code which demonstrates the problem. I know I could solve this by just returning a pointer, but I better use a reference.
In real code, what I actually want to return is a reference to an array of function pointers. But the code below is good enough to show the problem.
Thanks.
#define MAX_DEC 11
static char (&MyFunc())[MAX_DEC] { static char init[] = "Hihowareya "; return init; }
class A { private : char (&Ptr)[MAX_DEC]; public: A() : Ptr(::MyFunc()) { }
};
int main() { A a; }
The error I get is "'A::Ptr' : initialization of reference member requires a temporary variable"
Technically this is a compiler error; the code should compile, and does
compile with g++ and Comeau online.
However, I'd count this compiler error as a blessing... Don't /do/ this
kind of thing!
At the very least, put your array inside a struct (that will probably
make it compile, and also get rid of the lack of a type name). And you
shouldn't really have reference members, they're mostly Evil. But most
of all, unless you're interfacing to C code, an array of function
pointers says you're missing a class with virtual functions, which
should be used instead -- this is C++, and the replacement of arrays
of function pointers, with classes, is the main ++ in C++.
--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?
Victor Bazarov wrote: am******@gmail. com wrote: I have some test code which demonstrates the problem. I know I could solve this by just returning a pointer, but I better use a reference.
In real code, what I actually want to return is a reference to an array of function pointers. But the code below is good enough to show the problem.
Thanks.
#define MAX_DEC 11
static char (&MyFunc())[MAX_DEC] { static char init[] = "Hihowareya "; return init; }
class A { private : char (&Ptr)[MAX_DEC]; public: A() : Ptr(::MyFunc()) { }
};
int main() { A a; }
The error I get is "'A::Ptr' : initialization of reference member requires a temporary variable" Yes, Visual C++ is buggy. The code is fine. I suggest you report this as the ugly bug it is. Ask in 'microsoft.publ ic.vc.language' how to do that.
Ok thanks. Interestingly enough I see this problem on all of them,
VC6.0, VS.NET 2003 and VS.NET 2005. V -- Please remove capital As from my address when replying by mail
Alf P. Steinbach wrote: * am******@gmail. com: I have some test code which demonstrates the problem. I know I could solve this by just returning a pointer, but I better use a reference.
In real code, what I actually want to return is a reference to an array of function pointers. But the code below is good enough to show the problem.
Thanks.
#define MAX_DEC 11
static char (&MyFunc())[MAX_DEC] { static char init[] = "Hihowareya "; return init; }
class A { private : char (&Ptr)[MAX_DEC]; public: A() : Ptr(::MyFunc()) { }
};
int main() { A a; }
The error I get is "'A::Ptr' : initialization of reference member requires a temporary variable" Technically this is a compiler error; the code should compile, and does compile with g++ and Comeau online.
However, I'd count this compiler error as a blessing... Don't /do/ this kind of thing!
At the very least, put your array inside a struct (that will probably make it compile, and also get rid of the lack of a type name). And you shouldn't really have reference members, they're mostly Evil. But most of all, unless you're interfacing to C code, an array of function pointers says you're missing a class with virtual functions, which should be used instead -- this is C++, and the replacement of arrays of function pointers, with classes, is the main ++ in C++.
Actually they are pointers to static CreateInstance Functions of
different classes (denoting different h/w types supported) that are
supported.
and the class where this is implemented does the abstraction. -- A: Because it messes up the order in which people normally read text. Q: Why is it such a bad thing? A: Top-posting. Q: What is the most annoying thing on usenet and in e-mail?
* am******@gmail. com: * Alf P. Steinbach: At the very least, put your array inside a struct (that will probably make it compile, and also get rid of the lack of a type name). And you shouldn't really have reference members, they're mostly Evil. But most of all, unless you're interfacing to C code, an array of function pointers says you're missing a class with virtual functions, which should be used instead -- this is C++, and the replacement of arrays of function pointers, with classes, is the main ++ in C++.
Actually they are pointers to static CreateInstance Functions of different classes (denoting different h/w types supported) that are supported.
and the class where this is implemented does the abstraction.
In that case going the object route only buys you a lot of flexibility,
which you might not need, at the cost of at least one indirection.
--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail? This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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http://lab.msdn.microsoft.com/productfeedback/viewfeedback.aspx?feedbackid=5fee280d-085e-4fe2-af35-254fbbe96ee9
-----------------------------------------------------------------------------
This is a consortium of ideas from another thread on topic
-----------------------------------------------------------------------------
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