2024-03-04 06:35:20 +00:00
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---
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synopsis: Some stack overflow segfaults are fixed
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issues: 9616
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prs: 9617
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2024-05-15 02:14:58 +00:00
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cls: 205
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category: Improvements
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credits: [9999years, horrors]
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2024-03-04 06:35:20 +00:00
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---
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The number of nested function calls has been restricted, to detect and report
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infinite function call recursions. The default maximum call depth is 10,000 and
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can be set with [the `max-call-depth`
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option](@docroot@/command-ref/conf-file.md#conf-max-call-depth).
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This fixes segfaults or the following unhelpful error message in many cases:
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error: stack overflow (possible infinite recursion)
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Before:
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```
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$ nix-instantiate --eval --expr '(x: x x) (x: x x)'
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Segmentation fault: 11
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```
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After:
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```
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$ nix-instantiate --eval --expr '(x: x x) (x: x x)'
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error: stack overflow
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at «string»:1:14:
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1| (x: x x) (x: x x)
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| ^
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```
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