From: Ben Kohlen <bckohlen@yahoo.com>
To: gcc-help@gcc.gnu.org
Subject: bug?
Date: Fri, 15 Jun 2001 15:57:00 -0000 [thread overview]
Message-ID: <20010615225730.76865.qmail@web11001.mail.yahoo.com> (raw)
I am expecting that when I shift right, I will always
get zeroes in from the left, but when I use data types
less than 32 bits, this is not always the case.
Example:
...
unsigned short s = 0xcc55;
printf("%x\n", (s<<8)>>8);
...
yeilds the output "cc55" where as I was expecting
"55".
I was expecting this to be equivalent to:
...
s = s << 8;
s = s >> 8;
...
in which you do explicit assignment, which does yeild
"55" as the output.
Is this part of C spec, unspecified by C, or actually
a gcc bug?
gcc version 2.95.3 20010315 (release) on an x86 btw.
Please CC responses, as I am not on the list.
Cheers,
Ben
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next reply other threads:[~2001-06-15 15:57 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-15 15:57 Ben Kohlen [this message]
2001-06-15 16:38 ` bug? David Berthelot
2001-06-15 18:59 ` bug? Alexandre Oliva
2001-06-17 2:55 ` bug? Ingo Krabbe
2001-06-18 10:06 ` bug? David Berthelot
2001-06-18 11:46 ` bug? Ingo Krabbe
2001-06-18 23:05 ` bug? Alexandre Oliva
2001-06-18 23:58 ` bug? Ingo Krabbe
2001-06-19 0:31 ` bug? Alexandre Oliva
2001-06-19 5:55 ` bug? Ingo Krabbe
2001-06-20 7:57 ` bug? Alexandre Oliva
2002-02-06 4:34 Bug???? kabir.patel
2003-09-20 7:45 Bug? Brian
2005-08-25 23:33 bug? Alexey Sokolov
2005-08-26 1:06 ` bug? corey taylor
2005-08-26 12:07 ` bug? Eljay Love-Jensen
2007-10-21 14:27 bug? skaller
2007-10-22 11:19 ` bug? John Love-Jensen
2007-10-23 8:04 ` bug? skaller
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