Date: Tue, 14 Dec 1999 14:53:19 -0800 (PST) From: housel@acm.org To: FreeBSD-gnats-submit@freebsd.org Subject: i386/15488: Incorrect FPE_*_TRAP macros in machine/trap.h Message-ID: <199912142253.OAA85416@cx281057-a.irvn1.occa.home.com>
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>Number: 15488 >Category: i386 >Synopsis: Incorrect FPE_*_TRAP macros in machine/trap.h >Confidential: no >Severity: non-critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Dec 14 15:00:00 PST 1999 >Closed-Date: >Last-Modified: >Originator: Peter S. Housel >Release: FreeBSD 4.0-CURRENT i386 >Organization: None >Environment: * from: @(#)trap.h 5.4 (Berkeley) 5/9/91 * $FreeBSD: src/sys/i386/include/trap.h,v 1.10 1999/08/28 00:44:27 peter Exp $ >Description: The following sets of trap codes do not appear to be consistent. Using the FPE_*_TRAP constants in a trap handler gives incorrect results. #define FPE_INTDIV 1 /* integer divide by zero */ #define FPE_INTOVF 2 /* integer overflow */ #define FPE_FLTDIV 3 /* floating point divide by zero */ #define FPE_FLTOVF 4 /* floating point overflow */ #define FPE_FLTUND 5 /* floating point underflow */ #define FPE_FLTRES 6 /* floating point inexact result */ #define FPE_FLTINV 7 /* invalid floating point operation */ #define FPE_FLTSUB 8 /* subscript out of range */ #define FPE_INTOVF_TRAP 0x1 /* integer overflow */ #define FPE_INTDIV_TRAP 0x2 /* integer divide by zero */ #define FPE_FLTDIV_TRAP 0x3 /* floating/decimal divide by zero */ #define FPE_FLTOVF_TRAP 0x4 /* floating overflow */ #define FPE_FLTUND_TRAP 0x5 /* floating underflow */ #define FPE_FPU_NP_TRAP 0x6 /* floating point unit not present */ #define FPE_SUBRNG_TRAP 0x7 /* subrange out of bounds */ >How-To-Repeat: Write a trap handler for integer overflow or integer divide by zero. >Fix: Base "depreciated" macros on the updated ones? >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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