Runtime error : concerned line number

[Benjamin Hoffmann]

It would be great to return the line number when a runtime error occurred :

ERROR: Runtime error in TELEPORTATION(73925) - Process 128444 not active

To :

ERROR: Runtime error in TELEPORTATION(73925) Line 648 - Process 128444 not active

[Joseba Echevarria García]

Thanks for reporting.

You can get that info by compiling your DCB with debug information and running it with debugging on. Be sure to run your code from the same directory where your compiled it from so that the interpreter can read the source code when launching the DCB.

Tested by running the following command:

pxtb -g test.prg && pxtp -d test.dcb

On the following code:

import "mod_video"
import "mod_key"
import "mod_text"

Process test()
Begin
    while(!key(_enter))
        FRAME;
    End;

    write(0, 400, 315, 4, "Now press space");
End

Process main()
Private
int pid = 0;
Begin
    set_mode(800, 600);
    write(0, 400, 300, 4, "Press enter");
    pid = test();

    while(! key(_esc))
        if(key(_space))
            pid.x = 50;
        end
        FRAME;
    End;
End

[Edit] You'll get something like the following:

Loading... libgrbase.fakelib
Loading... libvideo.fakelib
Loading... libblit.fakelib
Loading... librender.fakelib
Loading... mod_video.fakelib
Loading... libsdlhandler.fakelib
Loading... libkey.fakelib
Loading... mod_key.fakelib
Loading... libfont.fakelib
Loading... libtext.fakelib
Loading... mod_text.fakelib
Renderer info:
==============
Accelerated rendering: 1
Render to texture:     1
Rendering driver:      opengl
VSYNC:                 0
Max texture size:      8192x8192
Renderer size:         320x240

# Bunch of stuff

>>> Instance:MAIN ProcID:65536 StackUsed:0/4096
test.prg:27         End;
test.prg:22         while(! key(_esc))
test.prg:23         if(key(_space))
test.prg:24         pid.x = 50;
ERROR: Runtime error in MAIN(65536) - Process 65537 not active

And you'll know that your problem is in line 24 of test.prg