Classic/Legacy CodeWarriorのトピックCodeWarrior for StarCore V3.0 - array initialization

CodeWarrior for StarCore V3.0 - array initialization

jogging — Tue, 10 Apr 2007 13:36:41 GMT

Hi,everyone
recently, I find CW for starcore 3.0 does not support initialization of arrays with variables, which requires
constant. Other compiles such as Visual C++ from Microsoft supports this function. I don't know how the
C standard specify this, but this function is not very difficulty to implement. If this function is supported
in the next release, it can avoid changing codes when we port codes from one compiler to another. Any comments?

Best Regards
Jogging Song

Message Edited by CrasyCat on 2007-04-10 11:04 AM

Re: CodeWarrior for StarCore V3.0 - array initialization

CrasyCat — Tue, 10 Apr 2007 16:05:45 GMT

Hello

Can you please be more specific.

What is not working?

Can you provide a code snippet?

CrasyCat

Re: CodeWarrior for StarCore V3.0 - array initialization

jogging — Tue, 10 Apr 2007 17:00:47 GMT

Hi, CrasyCat
   Following is an example,
   int a, b;
   int arr[] =
   {
      a, b
   };
The example is just an example.

CW tells me: illegal constant expression. C compiles doesn't support to initialize arrays using variables,
it requires programmer to use constant to initialize arrays.

By the way,
I can't find materails about SC3400's instruction set on the websites. Now I need to write assemble code for MSC8144,so instruction set is necessary. Is it available now?

Thanks
Best Regards
Jogging Song

Re: CodeWarrior for StarCore V3.0 - array initialization

CompilerGuru — Wed, 11 Apr 2007 05:32:32 GMT

That code snippet is not legal in ANSI C 89.
It is legal in C++, and when using C++ the starcore compiler does accept it, so the point is not if it is difficult to implement (I would actually say so, but its done already), but what the language supports. That other compilers do support this as C language extension does not change the language :smileywink:.
If you want to use C, I would suggest that you adapt your source code. I'm sure MSVC will still compile it. Using C++ just for global initialization seems a bit too much for me.

Daniel

PS: I did not check C99, not sure what is supported in this C dialect.

PPS: Does a/b really has to be a variable? I wonder what the real code is using the global initialization for.
(Not tested
  enum {a=0, b=0};
   int arr[] =
   {
      a, b
   };