Using compiled compiler at github/crystal/.build/crystal
Crystal interpreter 1.13.0-dev [e279b3c7f] (2024-07-01).
EXPERIMENTAL SOFTWARE: if you find a bug, please consider opening an issue in
https://github.com/crystal-lang/crystal/issues/new/
icr:1> x = ""
=> ""
icr:2> y : String? = nil
=> nil
icr:3> y = x
BUG: missing local var migration from Nil to (String | Nil) (Exception)
from github/crystal/src/compiler/crystal/interpreter/interpreter.cr:503:11 in 'migrate_local_vars'
from github/crystal/src/compiler/crystal/interpreter/interpreter.cr:182:7 in 'interpret'
from github/crystal/src/compiler/crystal/interpreter/repl.cr:92:5 in 'interpret'
from github/crystal/src/compiler/crystal/interpreter/repl.cr:53:13 in 'parse_and_interpret'
from github/crystal/src/compiler/crystal/interpreter/repl.cr:25:18 in 'run'
from github/crystal/src/compiler/crystal/command/repl.cr:39:7 in 'repl'
from github/crystal/src/compiler/crystal/command.cr:104:7 in 'run'
from github/crystal/src/compiler/crystal/command.cr:55:5 in 'run'
from github/crystal/src/compiler/crystal/command.cr:54:3 in 'run'
from github/crystal/src/compiler/crystal.cr:11:1 in '__crystal_main'
from github/crystal/src/crystal/main.cr:118:5 in 'main_user_code'
from github/crystal/src/crystal/main.cr:104:7 in 'main'
from github/crystal/src/crystal/main.cr:130:3 in 'main'
from /usr/lib/libc.so.6 in '??'
from /usr/lib/libc.so.6 in '__libc_start_main'
from /home/phil/github/crystal/.build/crystal in '_start'
from ???
Can be reproduced on master (tested with e279b3c7f90a43ff654694d9f7726a244aeda988)
The following REPL session triggers an unhandled case in the interpreter: https://github.com/crystal-lang/crystal/blob/5b500882bb51cff0f38a51735bf008923cde2219/src/compiler/crystal/interpreter/interpreter.cr#L503
Can be reproduced on master (tested with e279b3c7f90a43ff654694d9f7726a244aeda988)