On Fri, Jul 04, 2014 at 08:09:21PM +0200, Hans Petter Selasky wrote: > Hi, > > Can you try to reproduce this: > > Checkout 9-stable's src/sbin/sysctl only. > > cd /usr/9-stable/src/sbin/sysctl > > env CC=clang make clean all > ./sysctl -n hw.ncpu > > Then: > > env CC=gcc make clean all > ./sysctl -n hw.ncpu > > > clang --version > FreeBSD clang version 3.2 (tags/RELEASE_32/final 170710) 20121221 > Target: x86_64-unknown-freebsd9.1 > Thread model: posix > > gcc --version > gcc (GCC) 4.2.1 20070831 patched [FreeBSD] > Copyright (C) 2007 Free Software Foundation, Inc. > .... Hmm... I should have mentioned this part earlier (sorry!): I've been using clang as the system compiler since about ... autumn 2012 (long ago enough that I forgot that it might be "odd" for stable/9). > When compiling the code with clang, no output is happening. When > compiling with gcc, the FreeBSD 9-stable sysctl operates correctly. How > do we proceed? > > Can more people check this and reproduce? Well, here's what I see: g1-252(9.3-P)[22] svn co file:///svn/freebsd/src/base/stable/9/sbin/sysctl A sysctl/sysctl.c A sysctl/sysctl.8 A sysctl/Makefile U sysctl Checked out revision 268249. g1-252(9.3-P)[23] cd sysctl/ g1-252(9.3-P)[24] env CC=clang make clean all rm -f sysctl sysctl.o sysctl.8.gz sysctl.8.cat.gz Warning: Object directory not changed from original /tmp/hps/sysctl clang -O2 -pipe -std=gnu99 -Qunused-arguments -fstack-protector -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -c sysctl.c clang -O2 -pipe -std=gnu99 -Qunused-arguments -fstack-protector -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -o sysctl sysctl.o gzip -cn sysctl.8 > sysctl.8.gz g1-252(9.3-P)[25] ./sysctl -n hw.ncpu g1-252(9.3-P)[26] env CC=gcc make clean all rm -f sysctl sysctl.o sysctl.8.gz sysctl.8.cat.gz Warning: Object directory not changed from original /tmp/hps/sysctl clang -O2 -pipe -std=gnu99 -Qunused-arguments -fstack-protector -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -c sysctl.c clang -O2 -pipe -std=gnu99 -Qunused-arguments -fstack-protector -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -o sysctl sysctl.o gzip -cn sysctl.8 > sysctl.8.gz g1-252(9.3-P)[27] ./sysctl -n hw.ncpu g1-252(9.3-P)[28] > When compiling the -10 and -11 version of sysctl with clang and gcc, > everything is fine! That's moderately seriously kinky.... And not in a Good Way. :-/ > Thank you! At least I have some evidence that I might not be merely hallucinating.... Peace, david -- David H. Wolfskill david_at_catwhisker.org Taliban: Evil cowards with guns afraid of truth from a 14-year old girl. See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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