Any way to output variable names with their size (i.e. int, char and etc.)

Any way to output variable names with their size (i.e. int, char and etc.)

[shall890]

Hello,

I am wanting to extract variable names and their size (int, char and etc.)
from a c file.  Is there any way to extract that type of information?

Thanks,
Stephen



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Re: Any way to output variable names with their size (i.e. int, char and etc.)

[Jonathan Wakely]

On 10 January 2014 14:45, shall890 wrote:
> Hello,
>
> I am wanting to extract variable names and their size (int, char and etc.)

Those are types, not sizes.  A variable's type is a property of the
source code, the size of that type depends on the compiler and target
platform.

> from a c file.  Is there any way to extract that type of information?

You could compile it and look at the debug info. Or write a GCC plugin
to output the info as the file is compiled.  There are probably better
ways too.

Re: Any way to output variable names with their size (i.e. int, char and etc.)

[shall890]

Hello Jonathan,

I don't usually use gcc.  Is there a file that contains the debug info
output in a readable format?

Also, where can Info on writing a GCC plugin?

Thanks,
Stephen



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Re: Any way to output variable names with their size (i.e. int, char and etc.)

[Jonathan Wakely]

On 10 January 2014 15:45, shall890 wrote:
> Hello Jonathan,
>
> I don't usually use gcc.  Is there a file that contains the debug info
> output in a readable format?

It's in the object file produced by the compiler, in a machine-readable format.

> Also, where can Info on writing a GCC plugin?

I found these pages by searching the web:
http://gcc.gnu.org/wiki/plugins
http://lwn.net/Articles/457543/
http://libplugin.sourceforge.net/tutorials/gcc-plugin.html

Using debug info or writing a plugin will take a reasonable amount of
work. If you're looking for something simple and quick then I think
the answer is that GCC won't easily give you the information you're
looking for.

Re: Any way to output variable names with their size (i.e. int, char and etc.)

[shall890]

Thanks.
Stephen



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Re: Any way to output variable names with their size (i.e. int, char and etc.)

[Ángel González]

Why do you want the variable names and their size? I suspect that 
perhaps your goal could be with a slightly different information 
(hopefully easier to get).