crash (segmentation fault) on circular references

[npitre]

The following is sure to crash the program here:

# This data file was generated by the Spreadsheet Calculator.  That is SC-IM, the improved one!
# You almost certainly shouldn't edit it.

let A0 = 1
let A1 = 2
let A2 = @sum(A0:A1)
let A4 = 4
let A5 = 2
let A6 = @sum(A0:A5)-A2
# the next command fails to detect the cycle
let A8 = @sum(A0:A8)-A7
# this should crash the program
recalc
# if it didn't crash above, the following will do
let A8 =

[andmarti1424]

Thank you for sharing this. Will test this and try to get it fixed.

[andmarti1424]

@npitre Please check out my latest commit. Hopefully, and if god exists, this should be fixed.

[npitre]

Not quite.

Here I get:

$ ./sc-im --nocurses crash.sc
Circular reference in eval (cell A8)
Segmentation fault (core dumped)

And the stack backtrace is almost infinite. Something is recursing indefinitely.

[andmarti1424]

Please @npitre try again. Thanks!

[npitre]

Yep, my test case appears not to crash anymore.

[andmarti1424]

God exists then