forked from lix-project/lix
Rebecca Turner
7434caca05
This fixes a segfault on infinite function call recursion (rather than
infinite thunk recursion) by tracking the function call depth in
`EvalState`.
Additionally, to avoid printing extremely long stack traces, stack
frames are now deduplicated, with a `(19997 duplicate traces omitted)`
message. This should only really be triggered in infinite recursion
scenarios.
Before:
$ nix-instantiate --eval --expr '(x: x x) (x: x x)'
Segmentation fault: 11
After:
$ nix-instantiate --eval --expr '(x: x x) (x: x x)'
error: stack overflow
at «string»:1:14:
1| (x: x x) (x: x x)
| ^
$ nix-instantiate --eval --expr '(x: x x) (x: x x)' --show-trace
error:
… from call site
at «string»:1:1:
1| (x: x x) (x: x x)
| ^
… while calling anonymous lambda
at «string»:1:2:
1| (x: x x) (x: x x)
| ^
… from call site
at «string»:1:5:
1| (x: x x) (x: x x)
| ^
… while calling anonymous lambda
at «string»:1:11:
1| (x: x x) (x: x x)
| ^
… from call site
at «string»:1:14:
1| (x: x x) (x: x x)
| ^
(19997 duplicate traces omitted)
error: stack overflow
at «string»:1:14:
1| (x: x x) (x: x x)
| ^
|
||
|---|---|---|
| .. | ||
| allowed-uris-can-now-match-whole-schemes.md | ||
| cgroup-stats.md | ||
| config | ||
| eval-system.md | ||
| hash-format-nix32.md | ||
| ifd-eval-store.md | ||
| mounted-ssh-store.md | ||
| nix-config-show.md | ||
| nix-env-json-drv-path.md | ||
| nix-hash-convert.md | ||
| nix-profile-names.md | ||
| source-positions-in-errors.md | ||
| stack-overflow-segfaults.md | ||