The interpreter crashed: range start index 1 out of range for slice of length 0

[Rembane]

I'm creating an issue to track this issue. Please let me know if you need anything more from me.

RUST_BACKTRACE=full uiua watch --no-format
Watching for changes... (end with ctrl+C, use `uiua help` to see options)
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Advice: Split this line into multiple lines (heuristic: 65/53)
  at main.ua:12:1
12 | ⍉≡(∘▽+1)¤⊙(⍉≡(∘▽+1)¤)⬚0+⊙(:⬚0+:)⊙⊙∩(⍥(⊂0):[])∩(°⊚⊚=0/+)⊃⍉(⊙°⊟:△.).=@#⊜∘≠@\n. Input
     ──────────────────────────────────────────────────────────────────────────────────
The application panicked (crashed).
Message:  range start index 1 out of range for slice of length 0
Location: /home/hace/.cargo/registry/src/index.crates.io-6f17d22bba15001f/uiua-0.6.1/src/value.rs:217

Run with COLORBT_SHOW_HIDDEN=1 environment variable to disable frame filtering.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ BACKTRACE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
                              ⋮ 7 frames hidden ⋮
 8: core::slice::index::slice_start_index_len_fail_rt::ha112e85e859dc7f7
    at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/slice/index.rs:52
 9: core::slice::index::slice_start_index_len_fail::h5dd4fb20f57b6c6a
    at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/slice/index.rs:40
10: uiua::value::Value::prototype_row::ha09277a649c43429
    at <unknown source file>
11: uiua::algorithm::zip::rows2::h19398557849636a6
    at <unknown source file>
12: uiua::primitive::<impl uiua::primitive::defs::Primitive>::run::h19c5d3772a4bcd9d
    at <unknown source file>
13: uiua::run::Uiua::exec::h2a38ba065c7a2eec
    at <unknown source file>
14: uiua::run::Uiua::call_with_span::hcdc2715d3f293105
    at <unknown source file>
15: uiua::algorithm::zip::rows2::h19398557849636a6
    at <unknown source file>
16: uiua::primitive::<impl uiua::primitive::defs::Primitive>::run::h19c5d3772a4bcd9d
    at <unknown source file>
17: uiua::run::Uiua::exec::h2a38ba065c7a2eec
    at <unknown source file>
18: uiua::compile::<impl uiua::run::Uiua>::items::h85e3ba74bd1b7fe4
    at <unknown source file>
19: uiua::run::Uiua::load_impl::hf44775d9b94de7d1
    at <unknown source file>
20: uiua::run::Uiua::load_file::h8d2e38571da37be5
    at <unknown source file>
21: uiua::main::h7d0bab28d08621dc
    at <unknown source file>
22: std::sys_common::backtrace::__rust_begin_short_backtrace::h648c364573c71dd8
    at <unknown source file>
23: main
    at <unknown source file>
24: __libc_start_main
    at <unknown source file>
25: _start
    at <unknown source file>
Error: The interpreter has crashed!
  Hooray! You found a bug!
  Please report this at http://github.com/uiua-lang/uiua/issues/new

  code:
  main.ua:15:4
  Input ← $ ...#......
          $ .......#..
          $ #.........
          $ ..........
          $ ......#...
          $ .#........
          $ .........#
          $ ..........
          $ .......#..
          $ #...#.....

  ⍉≡(∘▽+1)¤⊙(⍉≡(∘▽+1)¤)⬚0+⊙(:⬚0+:)⊙⊙∩(⍥(⊂0):[])∩(°⊚⊚=0/+)⊃⍉(⊙°⊟:△.).=@#⊜∘≠@\n. Input
  ⇡⧻.
  # ≡(□≡(⊂?)⊙(¤⊚))
  ≡(□≡(⊂)⊚:)
  at main.ua:15:4
15 | ≡(□≡(⊂)⊚:)
        ─

[ikepaul]

I got the same bug when doing rows(join).
Edit:
Did some testing:
≡(+) [1 2 3] ¤ 1 # Works
≡(+) ¤ 1 [1 2 3] # Works
≡(+) [] [] # Works
≡(+) [] [] # Works
≡(+) [1 2 3] [] # Error, as it should
≡(+) [] [1 2 3] # Error, as it should
≡(+) [] ¤ 1 # Crashes
≡(+) ¤ 1 [] # Crashes
≡(+) [] [1] # Crashes
≡(+) [1] [] # Crashes

So theres an error when fixing a value and trying to iterate over another array, if that other array is empty.

[kaikalii]

This was fixed recently.
You can get the version with the fix with

uiua update --main

[Rembane]

Awesome! Thank you!