Hello, perhaps it’s another dfun bug.
)clear
CLEAR WS
∇z←x f y
[1] x{⍺ g ⍵}y
[2] →0
[3] ∇
items_allocated = 16
items[7] = 'yUSER-F2 λ1'xENDLVALUE3«0»→ENDL
idx = 7
==============================================================================
Assertion failed: 0 && "Bad index"
in Function: operator[]
in file: Simple_string.hh:150
Call stack:
----------------------------------------
-- Stack trace at Simple_string.hh:150
----------------------------------------
========================================
SI stack:
==============================================================================
*** immediate_execution() caught other exception ***
