Re: Question about "#pragma pack(n)"

[feng qiu]

In c-pragma.c file, #pragma pack(n) set the value of 
"maximum_field_alignment".
And in opts.c file,-fpack-struct set "flag_pack_struct = 1" .
But I don't known the relation between them. 

It seems that they relate to the four ariables――
DECL_ALIGN,DECL_PACKED,TYPE_PACKED,and TYPE_ALIGN in stor-layout.c file,but 
what is the difference in them?Should I modify this file?

Thanks in advance,
Feng Qiu
From: James E Wilson <[EMAIL PROTECTED]>
To: feng qiu <[EMAIL PROTECTED]>
CC: gcc@gcc.gnu.org
Subject: Re: Question about "#pragma pack(n)"
Date: Tue, 05 Apr 2005 18:37:53 -0700
feng qiu wrote:
> I want to modify the gcc source code,what should I do?
Look at the c-pragma.c file, search for pack.  Also see -fpack-struct in
common.opt and fpack_struct in opts.c.  Then expand your search from 
there.
--
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com
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