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From: "wolter.hellmundvega at tevva dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/38341] Wrong warning comparison of promoted ~unsigned with unsigned
Date: Thu, 29 Jun 2023 14:52:13 +0000	[thread overview]
Message-ID: <bug-38341-4-nsFy680Cte@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-38341-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38341

wolter.hellmundvega at tevva dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |wolter.hellmundvega at tevva dot c
                   |                            |om

--- Comment #14 from wolter.hellmundvega at tevva dot com ---
I'm not sure this is fixed, please correct me if wrong, but

    #include <stdio.h>
    #include <stdint.h>

    int main(void)
    {
        const uint8_t u = 0U;
        const uint8_t y = (uint8_t) ~u;

        return ((uint8_t) u != (uint8_t) ~y);
    }

gives warning

    test.c: In function ‘main’:
    test.c:9:25: warning: comparison of promoted bitwise complement of an
unsigned value with unsigned [-Wsign-compare]
        9 |     return ((uint8_t) u != (uint8_t) ~y);
          |                         ^~

Does this not mean that this issue is still present?

  parent reply	other threads:[~2023-06-29 14:52 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bug-38341-4@http.gcc.gnu.org/bugzilla/>
2014-01-29 16:01 ` gjl at gcc dot gnu.org
2023-05-20  4:26 ` pinskia at gcc dot gnu.org
2023-06-29 14:52 ` wolter.hellmundvega at tevva dot com [this message]
2008-12-01  8:36 [Bug c/38341] New: " fredrik dot hederstierna at securitas-direct dot com
2008-12-01 10:02 ` [Bug c/38341] " rguenth at gcc dot gnu dot org
2008-12-01 12:41 ` fredrik dot hederstierna at securitas-direct dot com
2008-12-01 12:50 ` rguenth at gcc dot gnu dot org
2008-12-01 12:56 ` fredrik dot hederstierna at securitas-direct dot com
2008-12-01 13:36 ` fredrik dot hederstierna at securitas-direct dot com
2008-12-02 12:15 ` rguenth at gcc dot gnu dot org
2009-02-23 23:53 ` john dot carter at tait dot co dot nz
2009-02-24  0:40 ` michael dot malone at tait dot co dot nz
2009-02-24  0:43 ` michael dot malone at tait dot co dot nz

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