Patch 8.2.4973
Problem:    Vim9: type error for list unpack mentions argument.
Solution:   Mention variable. (close #10435)
Files:      src/vim9.h, src/vim9execute.c, src/vim9instr.c,
            src/proto/vim9instr.pro, src/vim9compile.c,
            src/testdir/test_vim9_script.vim,
            src/testdir/test_vim9_disassemble.vim


*** ../vim-8.2.4972/src/vim9.h  2022-05-09 20:09:19.294641425 +0100
--- src/vim9.h  2022-05-17 15:59:25.272261459 +0100
***************
*** 296,301 ****
--- 296,302 ----
      type_T    *ct_type;
      int8_T    ct_off;         // offset in stack, -1 is bottom
      int8_T    ct_arg_idx;     // argument index or zero
+     int8_T    ct_is_var;      // when TRUE checking variable instead of arg
  } checktype_T;
  
  // arguments to ISN_STORENR
*** ../vim-8.2.4972/src/vim9execute.c   2022-05-09 20:09:19.294641425 +0100
--- src/vim9execute.c   2022-05-17 16:02:42.820123863 +0100
***************
*** 4652,4665 ****
--- 4652,4668 ----
            case ISN_CHECKTYPE:
                {
                    checktype_T *ct = &iptr->isn_arg.type;
+                   int         save_wt_variable = ectx->ec_where.wt_variable;
  
                    tv = STACK_TV_BOT((int)ct->ct_off);
                    SOURCING_LNUM = iptr->isn_lnum;
                    if (!ectx->ec_where.wt_variable)
                        ectx->ec_where.wt_index = ct->ct_arg_idx;
+                   ectx->ec_where.wt_variable = ct->ct_is_var;
                    if (check_typval_type(ct->ct_type, tv, ectx->ec_where)
                                                                       == FAIL)
                        goto on_error;
+                   ectx->ec_where.wt_variable = save_wt_variable;
                    if (!ectx->ec_where.wt_variable)
                        ectx->ec_where.wt_index = 0;
  
***************
*** 6114,6131 ****
  
            case ISN_CHECKTYPE:
                  {
!                     checktype_T *ct = &iptr->isn_arg.type;
!                     char *tofree;
  
                      if (ct->ct_arg_idx == 0)
                          smsg("%s%4d CHECKTYPE %s stack[%d]", pfx, current,
                                          type_name(ct->ct_type, &tofree),
                                          (int)ct->ct_off);
                      else
!                         smsg("%s%4d CHECKTYPE %s stack[%d] arg %d",
                                          pfx, current,
                                          type_name(ct->ct_type, &tofree),
                                          (int)ct->ct_off,
                                          (int)ct->ct_arg_idx);
                      vim_free(tofree);
                      break;
--- 6117,6135 ----
  
            case ISN_CHECKTYPE:
                  {
!                     checktype_T   *ct = &iptr->isn_arg.type;
!                     char          *tofree;
  
                      if (ct->ct_arg_idx == 0)
                          smsg("%s%4d CHECKTYPE %s stack[%d]", pfx, current,
                                          type_name(ct->ct_type, &tofree),
                                          (int)ct->ct_off);
                      else
!                         smsg("%s%4d CHECKTYPE %s stack[%d] %s %d",
                                          pfx, current,
                                          type_name(ct->ct_type, &tofree),
                                          (int)ct->ct_off,
+                                         ct->ct_is_var ? "var": "arg",
                                          (int)ct->ct_arg_idx);
                      vim_free(tofree);
                      break;
*** ../vim-8.2.4972/src/vim9instr.c     2022-05-10 13:24:17.640706898 +0100
--- src/vim9instr.c     2022-05-17 16:04:03.712146953 +0100
***************
*** 542,547 ****
--- 542,548 ----
        cctx_T      *cctx,
        type_T      *expected,
        int         offset,
+       int         is_var,
        int         argidx)
  {
      isn_T     *isn;
***************
*** 551,556 ****
--- 552,558 ----
        return FAIL;
      isn->isn_arg.type.ct_type = alloc_type(expected);
      isn->isn_arg.type.ct_off = (int8_T)offset;
+     isn->isn_arg.type.ct_is_var = is_var;
      isn->isn_arg.type.ct_arg_idx = (int8_T)argidx;
  
      // type becomes expected
***************
*** 1437,1443 ****
      if (maptype != NULL && maptype[0].type_decl->tt_member != NULL
                                  && maptype[0].type_decl->tt_member != &t_any)
        // Check that map() didn't change the item types.
!       generate_TYPECHECK(cctx, maptype[0].type_decl, -1, 1);
  
      return OK;
  }
--- 1439,1445 ----
      if (maptype != NULL && maptype[0].type_decl->tt_member != NULL
                                  && maptype[0].type_decl->tt_member != &t_any)
        // Check that map() didn't change the item types.
!       generate_TYPECHECK(cctx, maptype[0].type_decl, -1, FALSE, 1);
  
      return OK;
  }
*** ../vim-8.2.4972/src/proto/vim9instr.pro     2022-04-25 12:43:15.179819208 
+0100
--- src/proto/vim9instr.pro     2022-05-17 16:05:55.144160395 +0100
***************
*** 9,17 ****
  int generate_two_op(cctx_T *cctx, char_u *op);
  int check_compare_types(exprtype_T type, typval_T *tv1, typval_T *tv2);
  int generate_COMPARE(cctx_T *cctx, exprtype_T exprtype, int ic);
  int generate_2BOOL(cctx_T *cctx, int invert, int offset);
  int generate_COND2BOOL(cctx_T *cctx);
! int generate_TYPECHECK(cctx_T *cctx, type_T *expected, int offset, int 
argidx);
  int generate_SETTYPE(cctx_T *cctx, type_T *expected);
  int generate_tv_PUSH(cctx_T *cctx, typval_T *tv);
  int generate_PUSHNR(cctx_T *cctx, varnumber_T number);
--- 9,18 ----
  int generate_two_op(cctx_T *cctx, char_u *op);
  int check_compare_types(exprtype_T type, typval_T *tv1, typval_T *tv2);
  int generate_COMPARE(cctx_T *cctx, exprtype_T exprtype, int ic);
+ int generate_CONCAT(cctx_T *cctx, int count);
  int generate_2BOOL(cctx_T *cctx, int invert, int offset);
  int generate_COND2BOOL(cctx_T *cctx);
! int generate_TYPECHECK(cctx_T *cctx, type_T *expected, int offset, int 
is_var, int argidx);
  int generate_SETTYPE(cctx_T *cctx, type_T *expected);
  int generate_tv_PUSH(cctx_T *cctx, typval_T *tv);
  int generate_PUSHNR(cctx_T *cctx, varnumber_T number);
***************
*** 62,68 ****
  int generate_EXECCONCAT(cctx_T *cctx, int count);
  int generate_RANGE(cctx_T *cctx, char_u *range);
  int generate_UNPACK(cctx_T *cctx, int var_count, int semicolon);
- int generate_CONCAT(cctx_T *cctx, int count);
  int generate_cmdmods(cctx_T *cctx, cmdmod_T *cmod);
  int generate_undo_cmdmods(cctx_T *cctx);
  int generate_store_var(cctx_T *cctx, assign_dest_T dest, int opt_flags, int 
vimvaridx, int scriptvar_idx, int scriptvar_sid, type_T *type, char_u *name);
--- 63,68 ----
*** ../vim-8.2.4972/src/vim9compile.c   2022-05-12 11:05:36.184621676 +0100
--- src/vim9compile.c   2022-05-17 16:04:50.712155019 +0100
***************
*** 412,418 ****
      // If the actual type can be the expected type add a runtime check.
      if (!actual_is_const && ret == MAYBE && use_typecheck(actual, expected))
      {
!       generate_TYPECHECK(cctx, expected, offset, where.wt_index);
        return OK;
      }
  
--- 412,419 ----
      // If the actual type can be the expected type add a runtime check.
      if (!actual_is_const && ret == MAYBE && use_typecheck(actual, expected))
      {
!       generate_TYPECHECK(cctx, expected, offset,
!                                           where.wt_variable, where.wt_index);
        return OK;
      }
  
*** ../vim-8.2.4972/src/testdir/test_vim9_script.vim    2022-05-06 
17:53:02.689329537 +0100
--- src/testdir/test_vim9_script.vim    2022-05-17 16:10:02.156132465 +0100
***************
*** 2302,2308 ****
          echo k v
        endfor
    END
!   v9.CheckDefExecAndScriptFailure(lines, ['E1013: Argument 1: type mismatch, 
expected job but got string', 'E1012: Type mismatch; expected job but got 
string'], 2)
  
    lines =<< trim END
        var i = 0
--- 2302,2308 ----
          echo k v
        endfor
    END
!   v9.CheckDefExecAndScriptFailure(lines, ['E1163: Variable 1: type mismatch, 
expected job but got string', 'E1012: Type mismatch; expected job but got 
string'], 2)
  
    lines =<< trim END
        var i = 0
*** ../vim-8.2.4972/src/testdir/test_vim9_disassemble.vim       2022-05-06 
13:14:43.797076608 +0100
--- src/testdir/test_vim9_disassemble.vim       2022-05-17 16:11:43.496104042 
+0100
***************
*** 581,590 ****
          '\d CHECKTYPE list<any> stack\[-1\]\_s*' ..
          '\d CHECKLEN >= 2\_s*' ..
          '\d\+ ITEM 0\_s*' ..
!         '\d\+ CHECKTYPE string stack\[-1\] arg 1\_s*' ..
          '\d\+ STORE $0\_s*' ..
          '\d\+ ITEM 1\_s*' ..
!         '\d\+ CHECKTYPE string stack\[-1\] arg 2\_s*' ..
          '\d\+ STORE $1\_s*' ..
          '\d\+ SLICE 2\_s*' ..
          '\d\+ STORE $2\_s*' ..
--- 581,590 ----
          '\d CHECKTYPE list<any> stack\[-1\]\_s*' ..
          '\d CHECKLEN >= 2\_s*' ..
          '\d\+ ITEM 0\_s*' ..
!         '\d\+ CHECKTYPE string stack\[-1\] var 1\_s*' ..
          '\d\+ STORE $0\_s*' ..
          '\d\+ ITEM 1\_s*' ..
!         '\d\+ CHECKTYPE string stack\[-1\] var 2\_s*' ..
          '\d\+ STORE $1\_s*' ..
          '\d\+ SLICE 2\_s*' ..
          '\d\+ STORE $2\_s*' ..
*** ../vim-8.2.4972/src/version.c       2022-05-17 15:03:29.706610336 +0100
--- src/version.c       2022-05-17 16:12:11.520094799 +0100
***************
*** 748,749 ****
--- 748,751 ----
  {   /* Add new patch number below this line */
+ /**/
+     4973,
  /**/

-- 
If evolution theories are correct, humans will soon grow a third
hand for operating the mouse.

 /// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net   \\\
///                                                                      \\\
\\\        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///

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