I think emiT [1] comes quite close!

A time paradox from [2]:

  create x = 10;
  time point;
  print x; //prints 10 in first timeline, and 20 in the next

  create traveler = 20;
  traveler warps point{
      x = traveler;
      traveler kills traveler;
  };

[1] https://esolangs.org/wiki/EmiT, https://github.com/nimrag-b/emiT-C

[2] https://www.reddit.com/r/ProgrammingLanguages/comments/1golf...