Hi,
Oops - this is created by an optimization that fired back:
]log 38
Log facility 'optimization messages ' is now ON
⍴⍬
0
0 42 42⍴⍬
optimizing A⍴B
⍴⍬
0 42 42
I will look into this. In the meantime you could change line 144 in
PrimitiveFunction.cc from
* if (len_Z <= len_B && B->is_temp())*
to:
* if (0)*
/// Jürgen
On 05/24/2014 09:30 PM, David B. Lamkins wrote:
(I'm adding Jürgen to the Cc: list. I have evidence that this may not be
related to gnu-apl-mode, but rather to gnu-apl itself.)
It appears that reshape is somehow mutating certain empty objects to
which is applied.
0 0⍴⍬
⍴⍬
0 0
0 0⍴''
⍴''
0
The above is from my gnu-apl-mode session. Interestingly, I *do* see the
bug when reshaping zilde, but *not* when reshaping the empty character.
Here's the interesting bit: I *can* reproduce the reshape zilde bug
without gnu-apl-mode. The transcript in GNU APL by itself (started in a
Bash shell as `$ apl`) is identical to the transcript shown above.
Furthermore, here's evidence to suggest that the bug may only be tickled
by a reshape of a constant value. (This is a transcript of a
gnu-apl-mode session after having restarted APL to clear the mutated
zilde.)
b←⍬
⍴b
0
0 0⍴b
⍴b
0
⍴⍬
0
0 0⍴⍬
⍴⍬
0 0
⍴b
0
On Sat, 2014-05-24 at 10:57 -0500, Blake McBride wrote:
More interesting facts in emacs mode:
⍴''
0
1 1⍴' '
⍴''
0
0 0⍴' ' ⍝ reshape of space
⍴''
0
0 0⍴'' ⍝ reshape of quote quote
⍴''
0 0
)CLEAR
CLEAR WS
⍴''
0 0
