world breakage in pam_echo
--iIq+KTIB+xWY0FJy Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, my world is broken with the following error message for some days now: =3D=3D=3D lib/libpam/modules/pam_echo cc -O2 -pipe -march=3Dpentium2 -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-prototy= pes -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 Stop in /usr/src/lib/libpam/modules/pam_echo. *** Error code 1 Stop in /usr/src/lib/libpam/modules. *** Error code 1 Stop in /usr/src/lib/libpam. *** Error code 1 Stop in /usr/src. *** Error code 1 Stop in /usr/src. *** Error code 1 Stop in /usr/src. *** Error code 1 Stop in /usr/src. Does anyone have some insight into this? - Christian --=20 Christian Brueffer [EMAIL PROTECTED] [EMAIL PROTECTED] GPG Key: http://people.freebsd.org/~brueffer/brueffer.key.asc GPG Fingerprint: A5C8 2099 19FF AACA F41B B29B 6C76 178C A0ED 982D --iIq+KTIB+xWY0FJy Content-Type: application/pgp-signature Content-Disposition: inline -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.1 (FreeBSD) iD8DBQE/FWYzbHYXjKDtmC0RAmikAKCcf+97hb8MYVmFkcB98FFaBgZ2zQCg59oY zt3LZ+pRTuf0O8ndWBklElI= =cQku -END PGP SIGNATURE- --iIq+KTIB+xWY0FJy--
Re: world breakage in pam_echo
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! ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: world breakage in pam_echo
Wesley Morgan [EMAIL PROTECTED] writes: 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. [snip] It's my impression that these warnings mean the C code in question is undefined or implementation-defined according to the C standard, and the generated assembler may have unexpected behavior. I get this impression from reading the description of -fstrict-aliasing (enabled at -O2, -O3, -Os) at: http://gcc.gnu.org/onlinedocs/gcc-3.3/gcc/Optimize-Options.html#Optimize%20Options (The relevant warning flag is -Wstrict-aliasing, see http://gcc.gnu.org/onlinedocs/gcc-3.3/gcc/Warning-Options.html#Warning%20Options ) ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: world breakage in pam_echo
On Wed, 16 Jul 2003, Christian Brueffer wrote: my world is broken with the following error message for some days now: === 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 1. Optimization levels above -O are not supported. 2. -Werror is NOT recommended post-gcc 3.3 upgrade unless you are fixing warnings. gcc3.3 is much more warn-happy. I'm not sure how you got -Werror in there since it was removed prior to the gcc3.3 import. -- Doug White| FreeBSD: The Power to Serve [EMAIL PROTECTED] | www.FreeBSD.org ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to [EMAIL PROTECTED]
