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Date: Mon, 03 Feb 2003 12:36:00 -0000
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From: Marius Bernklev <gcc-bugs@gcc.gnu.org>
Subject: Re: c/9540: C99 initializers generate lots of code
Reply-To: Marius Bernklev <gcc-bugs@gcc.gnu.org>
X-SW-Source: 2003-02/txt/msg00095.txt.bz2
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The following reply was made to PR c/9540; it has been noted by GNATS.

From: Marius Bernklev <gcc-bugs@gcc.gnu.org>
To: bangerth@dealii.org
Cc: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org,
   gcc-gnats@gcc.gnu.org
Subject: Re: c/9540: C99 initializers generate lots of code
Date: Mon, 03 Feb 2003 13:34:19 +0100

 bangerth@dealii.org writes:
 
 > Synopsis: C99 initializers generate lots of code
 >
 > State-Changed-From-To: open->feedback
 > State-Changed-By: bangerth
 > State-Changed-When: Sun Feb  2 22:15:57 2003
 > State-Changed-Why:
 >     Can you send a self-contained code example that shows this?
 >     
 >     Thanks
 >      Wolfgang
 >
 > http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9540
 >
 
 Certainly. :)
 
 
 Here goes:
 
 
 // Start of vector.c
 #include <stdlib.h>  // well, I need size_t
 
 // imaginary garbage collector allocator
 extern void *gc_malloc(size_t);
 
 struct string {
   size_t size;
   size_t length;
   char *restrict string;
   int hash;
 };
 
 struct string *new_vector1( const size_t length ) {
   struct string *const restrict result = gc_malloc( sizeof *result );
 
   *result = (struct string) { .size = sizeof *result,
                               .length = length,
                               .string = gc_malloc( length ),
                               .hash = -1 };
 
   return result;
 }
 
 struct string *new_vector2( const size_t length ) {
   struct string *const restrict result = gc_malloc( sizeof *result );
 
   result->size = sizeof *result;
   result->length = length;
   result->string = gc_malloc( length );
   result->hash = -1;
   
   return result;
 }
 ---------------------------
 
 with gcc 3.2.1 on x86, with the command line
 
 gcc -std=c99 -S vector.c,
 
 the code generated for new_vector1 is somewhat larger than for
 new_vector2.
 
 
 
 Marius
 -- 
 <URL: http://home.ifi.uio.no/~mariube/ >
 
 Life sucks.  Death swallows.