Index: head/lib/libproc/tests/Makefile
===================================================================
--- head/lib/libproc/tests/Makefile	(revision 336590)
+++ head/lib/libproc/tests/Makefile	(revision 336591)
@@ -1,16 +1,17 @@
 # $FreeBSD$
 
 ATF_TESTS_C+=	proc_test
 
 PROGS=		target_prog
 SRCS_target_prog=	target_prog.c
 BINDIR_target_prog=	${TESTSDIR}
 
 WARNS?=		6
 LIBADD=	elf proc rtld_db util
 
 # Ensure that symbols aren't stripped from the test program, as they're needed
 # for testing symbol lookup.
 STRIP=
+CFLAGS.target_prog.c+= -O0
 
 .include <bsd.test.mk>