This is after the earlier update to pthread_run.c and once again, this 
happens only for i386;  amd64 builds successfully.

#   compile  libpthread/pthread_sig.o
/usr/obj/tools.x86_64.i386/bin/i386--netbsdelf-gcc -O2 -Wall 
-Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith 
-Wno-sign-compare -Wno-traditional -Wreturn-type -Wswitch -Wshadow 
-Wcast-qual -Wwrite-strings -Wextra -Wno-unused-parameter -std=gnu99 
-Werror   -Wno-cast-qual -I/usr/src/lib/libpthread/arch/i386 
-I/usr/src/lib/libpthread -I/usr/obj/lib/libpthread -D_LIBC 
-D__LIBPTHREAD_SOURCE__ -DPTHREAD_SA -DPTHREAD_MLOCK_KLUDGE -I/usr/src/sys 
-I/usr/src/lib/libpthread/../libc -nostdinc -isystem 
/usr/obj/destdir.i386/usr/include -c /usr/src/lib/libpthread/pthread_sig.c
-o pthread_sig.o
cc1: warnings being treated as errors
/usr/src/lib/libpthread/pthread_sig.c: In function 'pthread__deliver_signal':
/usr/src/lib/libpthread/pthread_sig.c:943: warning: variable 'olduc' 
might be clobbered by 'longjmp' or 'vfork'


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