nix/tests/lang/eval-okay-replacestrings.nix at 5df25a35b75225ff19798b74e1a2d12e02abb798 - nixos/nix - osbm's self hosted git service

nixos/nix

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Tuomas Tynkkynen 77a2cd2f5e

libexpr: Fix prim_replaceStrings() to work on an empty source string

Otherwise, running e.g.

nix-instantiate --eval -E --strict 'builtins.replaceStrings [""] ["X"] "abc"'

would just hang in an infinite loop.

Found by afl-fuzz.

First attempt of this was reverted in e2d71bd186 because it caused
another infinite loop, which is fixed now and a test added.

(cherry picked from commit 77e9e1ed91)

2018-04-11 11:47:41 +02:00

11 lines

344 B

Nix

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 with builtins;
 [ (replaceStrings ["o"] ["a"] "foobar")
   (replaceStrings ["o"] [""] "foobar")
   (replaceStrings ["oo"] ["u"] "foobar")
   (replaceStrings ["oo" "a"] ["a" "oo"] "foobar")
   (replaceStrings ["oo" "oo"] ["u" "i"] "foobar")
   (replaceStrings [""] ["X"] "abc")
   (replaceStrings [""] ["X"] "")
   (replaceStrings ["-"] ["_"] "a-b")
 ]