On Tue, 28 Jun 2011, Benjamin Kaduk wrote:
On Mon, 27 Jun 2011, Eric McCorkle wrote:
make.conf:
CPUTYPE?=core2
.if !defined(CC) || ${CC} == "cc"
CC=clang
CFLAGS=-Qunused-arguments
.endif
.if !defined(CXX) || ${CXX} == "c++"
CXX=clang++
.endif
NO_WERROR=
WERROR=
NO_FSCHG=
PERL_VERSION=5.12.3
Just noticed, the CFLAGS would disable optimization, which would explain
why no one else seems to see this. Still, I think the underlying issue
warrants investigation.
I seem to recall that our gcc-4.2 with -O0 is known to be buggy -- certainly
I just tripped over a panic in a third-party kernel module build using
bsd.kmod.mk with -O0 that was fixed by compiling the object in question with
-O.
It is not terribly easy to search for, but my archives find at least
http://lists.freebsd.org/pipermail/freebsd-current/2007-August/076028.html
I would try with -O1 and confirm that your issues go away, and not spend time
on the core issue if it proves to be a gcc bug.
Unfortunately, we are stuck with an old gcc in base ... though I have yet to
see if clang -O0 has issues with my module.
Wow, I juxtaposed the two compilers due to working on too little sleep.
Please disregard, and sorry for the noise.
-Ben
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