test-linkedlist fails

[jrp2014]

I've set up your mcc compiler to work with llvm 12 (cabal.project file:

packages: ./llvm-hs-pretty
          ./llvm-hs/llvm-hs-pure
          ./llvm-hs/llvm-hs
          ./mcc

)

using the llvm-12 branches of llvm-hs-pretty and llvm-hs and relaxing the bounds in the mcc.cabal file. (Running on MacOS.)

All the cabal test tests pass, apart from test-linkedlist, which produces

cabal run mcc --  tests/pass/test-linkedlist.mc -c -o linkedlist
Up to date

mcc on  llvm-12 [!?] 
❯ ./linkedlist
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
-1991765899
zsh: segmentation fault  ./linkedlist

Fortunately, just initializing l and l2 solves the problem.

──────────────────────────────────────────────────────────────────────────────────────────────────────────────
modified: tests/pass/test-linkedlist.mc
──────────────────────────────────────────────────────────────────────────────────────────────────────────────
@ tests/pass/test-linkedlist.mc:36 @ int main() {
  int i;
  struct List *l;
  struct List *l2;
 
  l = NULL;
  l2 = NULL;
 
  for (i = 0; i < 20; i = i + 1) {
    l = cons(i, l);
  }

Thanks for the great tutorial. I'll have a deeper look.