Hi Mike,
first of all the statement is correct:
* (a b c) ← 5
a
5
b
5
c
5
*
Could you please check if the error also occurs in a freshly started
interpreter (as to
rule out that something might have been wrong with one of the variables
*a*, *b*, or *c*?
If would also help if you could run:
*make apl.lines*
in the *src* directory and then start the interpreter in the *src*
directory. Thst should make
the stack trace show source file line numbers. Note that make apl.lines
will take a while.
Unfortunately there are multiple calls of *get_sym_ptr()* in function
*reduce_V_RPAR_ASS_B()*
and line numbers could tell us which of them failed.
Thanks,
Jürgen
On 3/27/24 18:48, M.Hall wrote:
I saw a multiple assignment statement in the book "Learning APL with
APLX", and tried it, not knowing if GNU-APL accepted it or not. I
expected maybe a syntax error, but instead it crashes with a
backtrace. I know 'a←b←c←5' works, but I was just playing around with
a statement I hadn't seen before.
(a b c) ← 5
==============================================================================
Assertion failed: get_ValueType() == TV_SYM
in Function: get_sym_ptr
in file: ./Token.hh:240
C/C++ call stack:
----------------------------------------
-- Stack trace at Assert.cc:75
----------------------------------------
0x10a8ed87e main
0x10aab66c5 Workspace::immediate_execution(bool)
0x10a9422cf Command::process_line()
0x10a956bd7 Command::finish_context()
0x10a96b675 Executable::execute_body() const
0x10aa400f5 StateIndicator::run()
0x10a9b4f7f Prefix::reduce_statements()
0x10a9b4966 Prefix::reduce_V_RPAR_ASS_B()
0x10a9012d6 do_Assert(char const*, char const*, char
const*, int)
========================================
========================================
SI stack:
Depth: 0
Exec: 0x7fad16423400
Safe exec: 0
Pmode: ◊ (a b c) ← 5
PC: 5 (9) '(... a)←
Stat: (a b c) ← 5
err_code: 0x0
==============================================================================
$ apl --cfg
BUILDTAG:
---------
Project: GNU APL
Version / SVN: 1.8 / SVN: 1767M
Build Date: 2024-03-18 02:40:56 UTC
Build OS: Darwin 19.6.0 x86_64
config.status: default ./configure options
Archive SVN: 1747
--
Mike Hall
