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59a566db13
builtins.deepSeq on deeply nested structures (e.g., a linked list with 100,000 elements) caused an uncontrolled OS-level stack overflow with no Nix stack trace. Fix by adding call depth tracking to forceValueDeep, integrating with Nix's existing max-call-depth mechanism. Now produces a controlled "stack overflow; max-call-depth exceeded" error with a proper stack trace. Closes: https://github.com/NixOS/nix/issues/7816
10 lines
367 B
Nix
10 lines
367 B
Nix
# Test that deepSeq on a deeply nested structure produces a controlled
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# stack overflow error rather than a segfault.
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let
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long = builtins.genList (x: x) 100000;
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reverseLinkedList = builtins.foldl' (tail: head: { inherit head tail; }) null long;
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in
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builtins.deepSeq reverseLinkedList (
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throw "unexpected success; expected a controlled stack overflow instead"
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)
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