Re: [Bug-apl] Possible Bug

[Juergen Sauermann]

Hi Mike,

thanks for reporting this. I believe I have fixed the segfault, SVN 655.
It should have occured only if you open a non-existing file and then try to read from it.

I believe in your function RDFILE you should check NILL in [3] to see if the file
was successfully opened.

You can also have a look at testcases/AP210.tc for a (working) example of using AP210.

Please also note that there are some limitations in the AP210 of GNU APL.
Currently only the APL2 mode (aka. 'A') is supported (I would say that the 'D' and 'T' modes
make only sense on machines that have 1 byte per character).

I can have a look at supporting the missing modes if you really need them.
For new developments, however, I would recommend the FILE_IO library of
GNU APL which has a much nicer API for handling files than AP210.

I will also look at the other issues that you reported.

/// Jürgen

On 08/11/2015 05:41 PM, Mike Duvos wrote:

      ∇RDFILE[⎕]∇
    ∇
[0]   Z←RDFILE X;NILL
[1]   NILL←210 SVOPAIR 'C5' 'D5'
[2]   C5←'IR,',PATH,X,',D'
[3]   NILL←C5
[4]   C5←⎕←2 0,D5
[5]   NILL←C5
[6]   Z←D5
[7]   C5←⍳0
[8]   NILL←⎕SVR 2 2⍴'C5D5'
    ∇

[In APL2]

     RDFILE 'test'
2 0 16
This is a test.
     
[In GNU APL]
 
      RDFILE 'test'

2 0 16
 INVALID SUBCOMMAND at AP210.cc:334

      RDFILE 'test'
               
VALUE ERROR
SVOPAIR[54]  →(1∧.≠⍙_CV/⍙_DC←⍙_PID ⎕SVO ⍙_SV)/⍙_END
                                                                           ^

It also segfaulted once, but I didn't copy it, and now I can't get it to do it again.