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RE: c++/6568: g++3 (3.0.2) misinterpreting single byte hex constants



Subject: Re: c++/6568: g++3 (3.0.2) misinterpreting single byte hex

************************************
localhost:[17] /home/ceccareb/work % uname -a
Linux localhost.localdomain 2.4.7-10 #1 Thu Sep 6 17:27:27 EDT 2001 i686
unknown

localhost:[18] /home/ceccareb/work %  g++3 -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.0.2/specs
Configured with:
../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info
 --enable-shared --enable-threads=posix --disable-checking --host=i386-redha
t-linux
Thread model: posix
gcc version 3.0.2 20010905 (Red Hat Linux 7.1 3.0.1-3)
localhost:[42] /usr/src %


localhost:[19] /home/ceccareb/work % cat test.cc
# include <stdio.h>


int main(int argc, char *argv[])
{

   int      i;
   char     n;

   i = 0;
   n = (-1);


   printf("sizeof(i) = %d\n", sizeof i);
   printf("sizeof(n) = %d\n", sizeof n);

   if (n == 0xFF)
      printf("Yes.  n = 0x%x\n", n);
   else
      printf("No.  n = 0x%x\n", n);

   return 0;

}



localhost:[20] /home/ceccareb/work % g++3 test.cc
test.cc: In function `int main(int, char**)':
test.cc:17: warning: comparison is always false due to limited range of data
   type


localhost:[21] /home/ceccareb/work % a.out
sizeof(i) = 4
sizeof(n) = 1
No.  n = 0xffffffff

localhost:[22] /home/ceccareb/work %

**************************************


-----Original Message-----
From: neil@gcc.gnu.org [mailto:neil@gcc.gnu.org]
Sent: Monday, May 06, 2002 4:26 AM
To: brian@talusmusic.com; gcc-bugs@gcc.gnu.org; gcc-prs@gcc.gnu.org;
nobody@gcc.gnu.org
Subject: Re: c++/6568: g++3 (3.0.2) misinterpreting single byte hex
constants


Synopsis: g++3 (3.0.2) misinterpreting single byte hex constants

State-Changed-From-To: open->feedback
State-Changed-By: neil
State-Changed-When: Mon May  6 01:26:16 2002
State-Changed-Why:
    Missing testcase.  Please reply to this e-mail with the
    5-line test case in the body of your e-mail; without changing the
subject line or the cc: list.  That will ensure it goes into our bug system.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&p
r=6568


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