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patch 8.2.4487: Vim9: cannot compare with v:null

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Problem:    Vim9: cannot compare with v:null.
Solution:   Allow comparing anything with v:null. (closes #9866)
This commit is contained in:
Bram Moolenaar
2022-03-01 19:23:24 +00:00
parent f01af9c4e6
commit 7a22224875
9 changed files with 188 additions and 19 deletions
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21
src/vim9execute.c
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@@ -3880,6 +3880,25 @@ exec_instructions(ectx_T *ectx)
}
break;
case ISN_COMPARENULL:
{
typval_T *tv1 = STACK_TV_BOT(-2);
typval_T *tv2 = STACK_TV_BOT(-1);
int res;
res = typval_compare_null(tv1, tv2);
if (res == MAYBE)
goto on_error;
if (iptr->isn_arg.op.op_type == EXPR_NEQUAL)
res = !res;
clear_tv(tv1);
clear_tv(tv2);
--ectx->ec_stack.ga_len;
tv1->v_type = VAR_BOOL;
tv1->vval.v_number = res ? VVAL_TRUE : VVAL_FALSE;
}
break;
// Operation with two number arguments
case ISN_OPNR:
case ISN_COMPARENR:
@@ -5901,6 +5920,7 @@ list_instructions(char *pfx, isn_T *instr, int instr_count, ufunc_T *ufunc)
case ISN_COMPAREBOOL:
case ISN_COMPARESPECIAL:
case ISN_COMPARENULL:
case ISN_COMPARENR:
case ISN_COMPAREFLOAT:
case ISN_COMPARESTRING:
@@ -5936,6 +5956,7 @@ list_instructions(char *pfx, isn_T *instr, int instr_count, ufunc_T *ufunc)
case ISN_COMPAREBOOL: type = "COMPAREBOOL"; break;
case ISN_COMPARESPECIAL:
type = "COMPARESPECIAL"; break;
case ISN_COMPARENULL: type = "COMPARENULL"; break;
case ISN_COMPARENR: type = "COMPARENR"; break;
case ISN_COMPAREFLOAT: type = "COMPAREFLOAT"; break;
case ISN_COMPARESTRING: