Date: Mon, 19 Mar 2001 08:03:18 -0800 (PST) From: jimz@panasas.com To: freebsd-gnats-submit@FreeBSD.org Subject: kern/25923: vm_map.h defines a macro called "min_offset" that creates problems with similarly-named variables Message-ID: <200103191603.f2JG3IR48370@freefall.freebsd.org>
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>Number: 25923 >Category: kern >Synopsis: vm_map.h defines a macro called "min_offset" that creates problems with similarly-named variables >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Mar 19 08:10:00 PST 2001 >Closed-Date: >Last-Modified: >Originator: Jim Zelenka >Release: 4.1.1-RELEASE >Organization: Panasas, Inc >Environment: FreeBSD nagano.panasas.com 4.1.1-RELEASE FreeBSD 4.1.1-RELEASE #0: Thu Mar 8 12:49:16 EST 2001 root@nagano.panasas.com:/usr/src/sys/compile/NAGANO-HZ i386 >Description: /usr/src/sys/vm/vm_map.h contains the following line of code: #define min_offset header.start This causes problems for code using a variable named min_offset. At best, it fails to compile. At worst, the code contains a structure named header with a field named start, and this creates a very mysterious memory-corruption bug. >How-To-Repeat: Include vm_map.h in a file using a local variable named min_offset >Fix: "A whole lot of query-replace" :-) >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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