When input to ⎕ is empty (just hit enter upon the prompt), it results
in assertion failure:
⎕
⎕:
items_allocated = 16
items[0] =
idx = 0
==============================================================================
Assertion failed: 0 && "Bad index"
in Function: operator[]
in file: Simple_string.hh:146
Call stack:
----------------------------------------
-- Stack trace at Simple_string.hh:146
----------------------------------------
0x7f6758ee9b45 __libc_start_main
0x43c7c5 main
0x55bc95 Workspace::immediate_execution(bool)
0x483165 Command::process_line()
0x47ca45 Command::do_APL_expression(UCS_string&)
0x48d795 Executable::execute_body() const
0x50c4d0 StateIndicator::run()
0x4b9901 Prefix::reduce_statements()
0x524bcc Quad_Quad::resolve(Token&, bool)
0x4cd614 Bif_F1_EXECUTE::execute_statement(UCS_string&)
0x4bc476
0x44b740 do_Assert(char const*, char const*, char const*, int)
========================================
SI stack:
Depth: 0
Exec: 0x110c1c0
Safe ex: no
Pmode: ◊ ⎕
PC: 1 ENDL
Stat: ⎕
err_code: 0x0
thrown: at StateIndicator.cc:41
e_msg_1: 'No Error'
e_msg_2: ''
e_msg_3: ''
==============================================================================
-k
