[Bug-apl] Segfault with 8⎕CR

[Kacper Gutowski]

I think this was working before.

      X←0⍴⊂''
      8⎕CR X


====================================================
SEGMENTATION FAULT

----------------------------------------
-- Stack trace at main.cc:85
----------------------------------------
0x7f5bfa2f25f0 __libc_start_main
0x444ae5  main
0x58047d   Workspace::immediate_execution(bool)
0x48a852    Command::process_line()
0x48a91a     Command::do_APL_expression(UCS_string&)
0x4954c5      Executable::execute_body() const
0x5298b0       StateIndicator::run()
0x4cc8c8        Prefix::reduce_statements()
0x4c6d25         Prefix::reduce_A_F_B_()
0x50123b          Quad_CR::eval_AB(Value_P, Value_P)
0x500b24           Quad_CR::do_CR(long, Value const*, PrintContext)
0x4ea7db            PrintBuffer::PrintBuffer(Value const&,
PrintContext const&, std::ostream*)
0x4cf197
PointerCell::character_representation(PrintContext const&) const
0x57c1ef              Value::prototype(char const*) const
0x478f30               Cell::init_type(Cell const&, Value&, char const*)
0x7f5bfb57fd40
0x449d37
========================================
====================================================


-k