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From: "gcc-bugzilla at ryuar dot in" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/96606] New: Shift operator not working correctly
Date: Thu, 13 Aug 2020 20:44:42 +0000	[thread overview]
Message-ID: <bug-96606-4@http.gcc.gnu.org/bugzilla/> (raw)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96606

            Bug ID: 96606
           Summary: Shift operator not working correctly
           Product: gcc
           Version: 10.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gcc-bugzilla at ryuar dot in
  Target Milestone: ---

Created attachment 49058
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49058&action=edit
source code.

Hello.

The shift operator doesn't work correctly in some situations.

Please check the attached file.

after compiling with `gcc KISA_SEED_ECB.c`, The output below is shown.

9292920F 73870FC4 05D1ED04 182F3919
A = 9292920F >> 8 = C4929292
B = 73870FC4 >> 8 = 0F73870F



I think the correct operation result is
9292920F 73870FC4 05D1ED04 182F3919
A = 9292920F >> 8 = 00929292
B = 73870FC4 >> 8 = 0073870F


There seems to be a problem between line 353 and line 453.

Please let me know if you think I'm mistaken.

             reply	other threads:[~2020-08-13 20:44 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-13 20:44 gcc-bugzilla at ryuar dot in [this message]
2020-08-13 20:46 ` [Bug c/96606] " gcc-bugzilla at ryuar dot in
2020-08-14  5:29 ` gcc-bugzilla at ryuar dot in
2020-08-17 16:49 ` pinskia at gcc dot gnu.org

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