stap: staptree.h:1328: virtual update_visitor::~update_visitor(): Assertion `values.empty()' failed.

gdb-out.txt

Core was generated by `stap -p4 -DSTP_OVERLOAD_THRESHOLD=5000000000 -DMAXACTION=200000000 -DMAXSTRINGL'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51	}
(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007f485b450d31 in __GI_abort () at abort.c:79
#2  0x00007f485b44805a in __assert_fail_base (fmt=0x7f485b598580 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7a4d10 "values.empty()", file=file@entry=0x7a4d05 "staptree.h", line=line@entry=1328,
    function=function@entry=0x7a5920 <update_visitor::~update_visitor()::__PRETTY_FUNCTION__> "virtual update_visitor::~update_visitor()") at assert.c:92
#3  0x00007f485b4480d2 in __GI___assert_fail (assertion=0x7a4d10 "values.empty()", file=0x7a4d05 "staptree.h", line=1328, function=0x7a5920 <update_visitor::~update_visitor()::__PRETTY_FUNCTION__> "virtual update_visitor::~update_visitor()") at assert.c:101
#4  0x00000000004b7742 in update_visitor::~update_visitor (this=0x7ffccd71bb20, __in_chrg=<optimized out>) at staptree.h:1328
#5  0x0000000000523f79 in void_statement_reducer::~void_statement_reducer (this=0x7ffccd71bb20, __in_chrg=<optimized out>) at elaborate.cxx:3971
#6  0x00000000004e9412 in semantic_pass_opt5 (s=..., relaxed_p=@0x7ffccd71bc17: false) at elaborate.cxx:4404
#7  0x00000000004efcca in semantic_pass_optimize1 (s=...) at elaborate.cxx:5691
#8  0x00000000004df0e0 in semantic_pass (s=...) at elaborate.cxx:2536
#9  0x0000000000414c22 in passes_0_4 (s=...) at main.cxx:948
#10 0x0000000000417673 in main (argc=22, argv=0x7ffccd71d498) at main.cxx:1415