patch 8.2.2188: Vim9: crash when calling global function from :def function Commit: https://github.com/vim/vim/commit/cd45ed03bfdd7fac53d562ad402df74bd26e7754 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Dec 22 17:35:54 2020 +0100 patch 8.2.2188: Vim9: crash when calling global function from :def function Problem: Vim9: crash when calling global function from :def function. Solution: Set the outer context. Define the partial for the context on the original function. Use a refcount to keep track of which ufunc is using a dfunc. (closes #7525)

--- a/src/vim9.h
+++ b/src/vim9.h
@@ -341,8 +341,10 @@ struct isn_S {
  */
 struct dfunc_S {
     ufunc_T	*df_ufunc;	    // struct containing most stuff
+    int		df_refcount;	    // how many ufunc_T point to this dfunc_T
     int		df_idx;		    // index in def_functions
     int		df_deleted;	    // if TRUE function was deleted
+    char_u	*df_name;	    // name used for error messages
 
     garray_T	df_def_args_isn;    // default argument instructions
     isn_T	*df_instr;	    // function body to be executed