Date: Fri, 20 Jun 1997 15:28:30 +0900 (JST) From: shigio@wafu.netgate.net To: FreeBSD-gnats-submit@FreeBSD.ORG Cc: shigio@wafu.netgate.net Subject: misc/3912: ctags(1) cannot trace some macro correctly. Message-ID: <199706192232.WAA11140@wafu.netgate.net> Resent-Message-ID: <199706200630.XAA14906@hub.freebsd.org>
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>Number: 3912 >Category: misc >Synopsis: ctags(1) cannot trace some macro correctly. >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-bugs >State: open >Class: change-request >Submitter-Id: current-users >Arrival-Date: Thu Jun 19 23:30:00 PDT 1997 >Last-Modified: >Originator: Shigio Yamaguchi >Organization: Freelance programmer >Release: FreeBSD 2.2.1-RELEASE i386 >Environment: All environment >Description: Ctags(1) cannot trace some macro correctly. But ctags isn't bad. Trouble maker are some macro definitions. For example, SYSINIT is used in /usr/src/sys/kern/init_main.c like this. [/usr/src/sys/kern/init_main.c] SYSINIT(placeholder, SI_SUB_DUMMY,SI_ORDER_ANY, NULL, NULL) SYSINIT doesn't end with ';', because the definition already has it. [/usr/src/sys/sys/kern.h] #define SYSINIT(uniquifier, subsystem, order, func, ident) \ static struct sysinit uniquifier ## _sys_init = { \ subsystem, \ order, \ func, \ ident, \ SI_TYPE_DEFAULT \ }; \ DATA_SET(sysinit_set,uniquifier ## _sys_init); ^ | END WITH ';' But ctags(1) cannot treat this pattern. For example, in these code [/usr/src/sys/kern/init_main.c] SYSINIT(placeholder, SI_SUB_DUMMY,SI_ORDER_ANY, NULL, NULL) ... (a) ..... void main(framep) ... (b) void *framep; { ..... } ... (c) Ctags(1) assumes SYSINIT start at (a) and end at (c). As the result that main() functin is skipped. I think the definition of SYSINIT should not end with ';' and the referenced point should end with ';'. In the same source file(/usr/src/sys/sys/kern.h), MAKE_SET's code is good. [/usr/src/sys/sys/kern.h] #define MAKE_SET(set, sym, type) \ static void const * const __set_##set##_sym_##sym = &sym; \ asm(".stabs \"_" #set "\", " #type ", 0, 0, _" #sym) In this macro, the first statement ends with ';' and the second (=last) statement doesn't end with ';'. It should be so. >How-To-Repeat: Nothing >Fix: Change all macros which seems like function as follows. o Definition doesn't end with ';'. o Reference end with ';'. >Audit-Trail: >Unformatted:
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