[Bug-apl] Segmentation fault

[Blake McBride]

I hit some bad keys on the keyboard while attempting to get rid of a SI and ended up with a segmentation fault.  Here is what happened:

Note:  WS test was not saved with a SI.  It has a ⎕LX that causes a function named auto to execute.  auto, in turn, attempted to call a function named start that does not exist.  So, the initial error (VALUE ERROR) is expected.  While attempting to pop the SI I hit some other keys accidentally and got the segmentation fault.

      )load test

SAVED 2014-4-27  1:46:48 (GMT-5)

VALUE ERROR

auto[11]  start

          ^

      asdg��→

Bad UTF8 string: 0x61 0x73 0x64 0x67 0x86 0x92 0xE2 0x86 0x92 at UCS_string.cc:65

----------------------------------------

-- Stack trace at UCS_string.cc:66

----------------------------------------

0x7f25b214bde5 __libc_start_main

0x434f8d  main

0x52682d   Workspace::immediate_execution(bool)

0x462bbd    Command::process_line()

0x475793     Input::get_line()

0x50b4d5      UCS_string::UCS_string(UTF8_string const&)

========================================

==============================================================================

Assertion failed: 0 && "Error in UCS_string::UCS_string()"

in Function:      UCS_string

in file:          UCS_string.cc:67

Call stack:

----------------------------------------

-- Stack trace at UCS_string.cc:67

----------------------------------------

0x7f25b214bde5 __libc_start_main

0x434f8d  main

0x52682d   Workspace::immediate_execution(bool)

0x462bbd    Command::process_line()

0x475793     Input::get_line()

0x50b4ee      UCS_string::UCS_string(UTF8_string const&)

0x44345f       do_Assert(char const*, char const*, char const*, int)

========================================

SI stack:

Depth:    1

Exec:     0xc558c8

Pmode:    ∇ auto[11]

PC:       58 ENDL

Stat:     start

err_code: 0x30001

thrown:   at Symbol.cc:679

e_msg_1:  'VALUE ERROR'

e_msg_2:  'auto[11]  start'

e_msg_3:  '          ^'

Depth:    0

Exec:     0xc38d40

Pmode:    ◊  auto

PC:       1 ENDL

Stat:     auto

err_code: 0x0

thrown:   at StateIndicator.cc:40

e_msg_1:  'No Error'

e_msg_2:  ''

e_msg_3:  ''

==============================================================================

====================================================

SEGMENTATION FAULT

----------------------------------------

-- Stack trace at main.cc:121

----------------------------------------

0x7f25b214bde5 __libc_start_main

0x434f8d  main

0x52682d   Workspace::immediate_execution(bool)

0x462bbd    Command::process_line()

0x475793     Input::get_line()

0x50b4ee      UCS_string::UCS_string(UTF8_string const&)

0x443407       do_Assert(char const*, char const*, char const*, int)

0x4ff0be        TestFiles::assert_error()

0x7f25b39a5bb0         

0x47973a          

========================================

====================================================

Segmentation fault