lean4-htt/tests/elab_fail/doLetLoop.lean
Sebastian Graf 40e8f4c5fb
chore: turn on new do elaborator in Core (#12656)
This PR turns on the new `do` elaborator in Init, Lean, Std, Lake and
the testsuite.

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-09 12:38:33 +00:00

5 lines
190 B
Text

set_option backward.do.legacy false
/-! This test case used to trigger an infinite loop in the old `do` elaborator. -/
set_option showPartialSyntaxErrors true
def f : IO Unit := do
if let