[ 0:01] compiling /home/xrockai/src/divine/nightly/test/libcxx/div-extra/atomic-2.cpp
[ 0:01] compiling /dios/lib/config/seqklee.bc
[ 0:01] setting up pass: functionmeta, options = 
[ 0:02] setting up pass: fuse-ctors, options = 
[ 0:02] KLEE: output directory is "/var/obj/divine-nightly/semidbg/test/__test_work_dir.7/_klee_out"
[ 0:04] KLEE: Using Z3 solver backend
[ 0:04] WARNING: this target does not support the llvm.stacksave intrinsic.
[ 0:04] warning: Linking two modules of different target triples: klee_div_zero_check.bc' is 'x86_64-unknown-linux-gnu' whereas 'klee.bc' is 'x86_64-unknown-none-elf'
[ 0:04] 
[ 0:04] KLEE: WARNING: undefined reference to function: __dios_tainted_init
[ 0:07] KLEE: WARNING: undefined reference to function: klee_free
[ 0:07] KLEE: WARNING: undefined reference to function: klee_malloc
[ 0:07] about to __boot:0
[ 0:07] KLEE: WARNING ONCE: Alignment of memory from call "klee_malloc" is not modelled. Using alignment of 8.
[ 0:07] about to run the scheduler:0
[ 0:07] KLEE: WARNING ONCE: calling external: __dios_tainted_init() at /dios/libc/sys/start.cpp:49 5
[ 0:07] KLEE: ERROR: /dios/libc/sys/start.cpp:87: failed external call: __dios_tainted_init
[ 0:07] KLEE: NOTE: now ignoring this error at this location
[ 0:07] KLEE: ERROR: EXITING ON ERROR:
[ 0:08] Error: failed external call: __dios_tainted_init
[ 0:08] File: /dios/libc/sys/start.cpp
[ 0:08] Line: 87
[ 0:08] assembly.ll line: 34959
[ 0:08] Stack: 
[ 0:08] 	#000034959 in __dios_start (l=0, argc=1, argv=94692094459912, envp=94692094478344) at /dios/libc/sys/start.cpp:87
[ 0:08] 	#100010968 in _ZN6__dios10sched_nullINS_5ClockINS_10NondetKleeINS_4BaseEEEEEE13run_schedulerINS_7ContextEEEvv () at /dios/sys/sched_null.hpp:163
[ 0:08] 	#200043207 in klee_boot (argc=1, argv=94692081453120) at /dios/arch/klee/boot.c:41
[ 0:08] 
[ 0:08] 
[ 0:08]      1	/* TAGS: min c++ */
[ 0:08]      2	#include <atomic>
[ 0:08]      3	#include <cassert>
[ 0:08]      4	
[ 0:08]      5	int main() {
[ 0:08]      6	    std::atomic< int > a = ATOMIC_VAR_INIT( 0 );
[ 0:08]      7	    assert( a == 0 );
[ 0:08]      8	    a = 42;
[ 0:08]      9	    assert( a == 42 );
[ 0:08]     10	    assert( a.exchange( 16 ) == 42 );
[ 0:08]     11	    assert( a == 16 );
[ 0:08]     12	    int compare = 8;
[ 0:08]     13	    assert( !a.compare_exchange_strong( compare, 0 ) );
[ 0:08]     14	    assert( a.compare_exchange_strong( compare, 0 ) );
[ 0:08]     15	    assert( a == 0 );
[ 0:08]     16	}
[ 0:08] # no errors were expected but one was found anyway