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Date: Sat, 10 Apr 2004 19:39:00 -0000
From: "monge at sns dot it" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Message-ID: <20040410182243.14911.monge@sns.it>
Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug c/14911] New: static const symbols lost when referred in asm
X-Bugzilla-Reason: CC
X-SW-Source: 2004-04/txt/msg00899.txt.bz2
List-Id: <gcc-bugs.sourceware.org>

could not compile MPlayer with 3.4 prerelease :-( 
 
gcc -v : 
 Reading specs from /usr/lib/gcc/i686-pc-linux-gnu/3.4.0/specs 
Configured with: ../configure --prefix=/usr --program-suffix=-3.4 --with-gnu-as 
--with-gnu-ld --with-cpu=i686 --enable-__cxa_atexit --enable-languages=c,c++ 
Thread model: posix 
gcc version 3.4.0 20040407 (prerelease) 
 
the follwing code: 
 
//------------BEGIN--------------- 
static const int hello = 56; 
int main() 
{ 
	asm( 
	"mov hello, %eax\n" 
	); 
	return 0; 
} 
//------------END----------------- 
 
compiles with  
 
gcc code.c 
 
but fails with 
 
gcc -O2 code.c 
/tmp/ccgUsUmb.o(.text+0xd): In function `main': 
: undefined reference to `hello' 
collect2: ld returned 1 exit status 
 
gcc 3.2.3 always works. 
 
Thanx

-- 
           Summary: static const symbols lost when referred in asm
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: monge at sns dot it
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14911