lix/tests/functional/lang/eval-okay-substring-context.nix
eldritch horrors 2c85fcce87 Merge pull request #9747 from awakesecurity/mz/fix-quadratic-splitString
Fix performance of builtins.substring for empty substrings

(cherry picked from commit b2deff1947)
Change-Id: I4ddfc8d26a4781c9520fff9807849a073ee7bed8
2024-03-04 08:06:36 +01:00

12 lines
270 B
Nix

with builtins;
let
s = "${builtins.derivation { name = "test"; builder = "/bin/sh"; system = "x86_64-linux"; }}";
in
if getContext s == getContext "${substring 0 0 s + unsafeDiscardStringContext s}"
then "okay"
else throw "empty substring should preserve context"