#0  copy_word_list (list=0x8800013f78a8) at ../bash/copy_cmd.c:75
	new_list = (WORD_LIST *) 0x0
#1  0x000000000043e073 in copy_command (command=<value optimized out>)
    at ../bash/copy_cmd.c:87
	new_command = (COMMAND *) 0x148c088
#2  0x000000000043de08 in copy_command (command=0x1468648)
    at ../bash/copy_cmd.c:439
	new_command = (COMMAND *) 0x1479788
#3  0x000000000043de08 in copy_command (command=0x14685c8)
    at ../bash/copy_cmd.c:439
	new_command = (COMMAND *) 0x1470588
#4  0x000000000043dec8 in copy_command (command=<value optimized out>)
    at ../bash/copy_cmd.c:276
	new_command = (COMMAND *) 0x14a5b48
#5  0x000000000043de1d in copy_command (command=0x148e588)
    at ../bash/copy_cmd.c:440
	new_command = (COMMAND *) 0x148e588
#6  0x000000000043dedd in copy_command (command=<value optimized out>)
    at ../bash/copy_cmd.c:277
	new_command = (COMMAND *) 0x1126808
#7  0x000000000043de1d in copy_command (command=0x148d748)
    at ../bash/copy_cmd.c:440
	new_command = (COMMAND *) 0x148d748
#8  0x000000000043de08 in copy_command (command=0x143e948)
    at ../bash/copy_cmd.c:439
	new_command = (COMMAND *) 0x148ba08
#9  0x000000000043dd3f in copy_command (command=0x14a4748)
    at ../bash/copy_cmd.c:211
	new_command = (COMMAND *) 0x14a4748
#10 0x0000000000435b53 in execute_function (var=0x143e888, words=0x1441468, 
    flags=0, fds_to_close=<value optimized out>, async=<value optimized out>, 
    subshell=<value optimized out>) at ../bash/execute_cmd.c:4036
	return_val = <value optimized out>
	result = <value optimized out>
	tc = (COMMAND *) 0x0
	save_current = <value optimized out>
	debug_trap = <value optimized out>
	error_trap = <value optimized out>
	return_trap = <value optimized out>
	funcname_v = (SHELL_VAR *) 0x1120d08
	nfv = <value optimized out>
	bash_source_v = <value optimized out>
	bash_lineno_v = <value optimized out>
	funcname_a = (ARRAY *) 0x1120dc8
	bash_source_a = (ARRAY *) 0x1120a48
	bash_lineno_a = (ARRAY *) 0x1120b48
	shell_fn = <value optimized out>
	sfile = <value optimized out>
	t = <value optimized out>
#11 0x00000000004361f5 in execute_subshell_builtin_or_function (
    words=0x8800013f78a8, redirects=0x800, builtin=0, var=0x0, 
    pipe_in=-16843009, pipe_out=1999383583, async=21238888, fds_to_close=0x0, 
    flags=4634899) at ../bash/execute_cmd.c:4248
	result = 0
	r = <value optimized out>
	funcvalue = <value optimized out>
	jobs_hack = <value optimized out>
#12 0x0000000000000000 in ?? ()
No symbol table info available.