Date: Wed, 16 Jul 2003 12:08:52 -0400 (EDT) From: Wesley Morgan <morganw@chemikals.org> To: Christian Brueffer <chris@unixpages.org> Cc: current@freebsd.org Subject: Re: world breakage in pam_echo Message-ID: <20030716120739.R92331@volatile.chemikals.org> In-Reply-To: <20030716145027.GU1226@unixpages.org> References: <20030716145027.GU1226@unixpages.org>
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On Wed, 16 Jul 2003, Christian Brueffer wrote: > ===> lib/libpam/modules/pam_echo > cc -O2 -pipe -march=pentium2 -I/usr/src/lib/libpam/modules/pam_echo/../../../../contrib/openpam/include -I/usr/src/lib/libpam/modules/pam_echo/../../libpam -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wcast-align -Wno-uninitialized -c /usr/src/lib/libpam/modules/pam_echo/pam_echo.c > /usr/src/lib/libpam/modules/pam_echo/pam_echo.c: In function `_pam_echo': > /usr/src/lib/libpam/modules/pam_echo/pam_echo.c:92: warning: dereferencing type-punned pointer will break strict-aliasing rules > *** Error code 1 I was just about to report this myself. The breakage only occurs with optimization levels of -O2 (and maybe higher). Officially -O2 is not supported for world, but in my experience there are real problems with code (warnings in this case) that do not show up until the optimizer takes a closer look at them. -- Hi! I'm a .signature virus! Copy me into your ~/.signature to help me spread!
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