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* [Bug c++/31656] New: Left shift error
@ 2007-04-22 11:15 myprasanna at gmail dot com
2007-04-22 11:19 ` [Bug c++/31656] " pinskia at gcc dot gnu dot org
0 siblings, 1 reply; 2+ messages in thread
From: myprasanna at gmail dot com @ 2007-04-22 11:15 UTC (permalink / raw)
To: gcc-bugs
Left shift of width 32, 33, 64, 65 etc produces inconsistencies.
const int j = 33;
printf("%d\n", 1 << j);
Output:
0
int j = 33;
printf("%d\n", 1 << j);
Output:
2
Same with C. Runtime shift instruction emmitted incorrectly.
--
Summary: Left shift error
Product: gcc
Version: 4.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: myprasanna at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31656
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/31656] Left shift error
2007-04-22 11:15 [Bug c++/31656] New: Left shift error myprasanna at gmail dot com
@ 2007-04-22 11:19 ` pinskia at gcc dot gnu dot org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-04-22 11:19 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2007-04-22 12:19 -------
No, this code is undefined by both the C and C++ standards.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31656
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2007-04-22 11:15 [Bug c++/31656] New: Left shift error myprasanna at gmail dot com
2007-04-22 11:19 ` [Bug c++/31656] " pinskia at gcc dot gnu dot org
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