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From: mmarks@internetmachines.com To: gcc-gnats@gcc.gnu.org Subject: c/10226: unsigned short promotion with bitwise inversion Date: Wed, 26 Mar 2003 18:16:00 -0000 [thread overview] Message-ID: <20030326175602.3260.qmail@sources.redhat.com> (raw) >Number: 10226 >Category: c >Synopsis: unsigned short promotion with bitwise inversion >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Wed Mar 26 18:06:00 UTC 2003 >Closed-Date: >Last-Modified: >Originator: mmarks@internetmachines.com >Release: unknown-1.0 >Organization: >Environment: gcc 3.2.1 and 3.2.2 >Description: When two unsigned shorts (16 bit) variables are compared with one being inverted the comparison will fail. The following code should pass, while it does generate a warning it should instead just work. unsigned short A = 0xDEAD; unsigned short B; B = ~A; if ( B == ~A) { printf("Pass\n"); } else { printf("Fail\n"); } It compares 0xFFFFDEAD == 0x0000DEAD which fails >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
next reply other threads:[~2003-03-26 18:06 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-03-26 18:16 mmarks [this message] 2003-03-26 18:26 Falk Hueffner 2003-03-26 19:56 Michael Marks 2003-03-26 20:36 Glen Nakamura 2003-03-26 21:16 ebotcazou 2003-03-26 21:16 Michael Marks 2003-03-26 21:56 Glen Nakamura 2003-03-26 21:56 Falk Hueffner 2003-03-26 22:06 Michael Marks 2003-03-26 22:26 Glen Nakamura 2003-03-26 22:26 Falk Hueffner 2003-03-26 22:36 Glen Nakamura 2003-03-26 23:06 Falk Hueffner 2003-03-27 0:16 Michael Marks
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