linux-kernel - [PATCH] aic7xxx/aicasm build failure w/gcc-3.4.6

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Message-Id: <20070522115130.9B959DBA1@gherkin.frus.com>
Date:	Tue, 22 May 2007 06:51:30 -0500 (CDT)
From:	rct@...rkin.frus.com (Bob Tracy)
To:	linux-kernel@...r.kernel.org
CC:	linux-scsi@...r.kernel.org
Subject: [PATCH] aic7xxx/aicasm build failure w/gcc-3.4.6

Second try: originally reported this back on April 17th.  2.6.X
kernel builds started failing after I upgraded my compiler from
gcc-3.3.X to gcc-3.4.6:

make -C drivers/scsi/aic7xxx/aicasm
(...)
gcc -I/usr/include -I. aicasm.c aicasm_symbol.c aicasm_gram.c aicasm_macro_gram.c aicasm_scan.c aicasm_macro_scan.c -o aicasm -ldb
aicasm_gram.y:1948: error: conflicting types for 'yyerror'
aicasm_gram.tab.c:3004: error: previous implicit declaration of 'yyerror' was here
aicasm_macro_gram.y:162: error: conflicting types for 'mmerror'
aicasm_macro_gram.tab.c:1196: error: previous implicit declaration of 'mmerror' was here

As a workaround, commenting out or deleting the "void" declarations
for yyerror() and mmerror() in the respective ".y" files fixes the
problem.  A patch to illustrate the offending code is attached, but
there's no "signed-off by" line because I'm certain the final form of
the patch will be different.  The patch applies cleanly to at least
2.6.21 and later kernels.  gcc-3.3 may have been warning about the
type conflicts, but I didn't notice: gcc-3.4 treats the type conflicts
as errors, so I *did* notice :-).

Here's the "gcc -v" output:

Reading specs from /usr/lib/gcc/i486-slackware-linux/3.4.6/specs
Configured with: ../gcc-3.4.6/configure --prefix=/usr --enable-shared --enable-threads=posix --enable-__cxa_atexit --disable-checking --with-gnu-ld --verbose --target=i486-slackware-linux --host=i486-slackware-linux
Thread model: posix
gcc version 3.4.6

-- 
-----------------------------------------------------------------------
Bob Tracy                   WTO + WIPO = DMCA? http://www.anti-dmca.org
rct@...s.com
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