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patch 8.2.2381: Vim9: divide by zero does not abort expression execution

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Problem:    Vim9: divide by zero does not abort expression execution.
Solution:   Use a "failed" flag. (issue #7704)
This commit is contained in:
Bram Moolenaar
2021-01-21 12:34:14 +01:00
parent a0f7f73ebb
commit c5f59fab23
7 changed files with 77 additions and 16 deletions
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13
src/vim9compile.c
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@@ -4291,9 +4291,10 @@ compile_expr6(char_u **arg, cctx_T *cctx, ppconst_T *ppconst)
&& ppconst->pp_tv[ppconst_used].v_type == VAR_NUMBER
&& ppconst->pp_tv[ppconst_used + 1].v_type == VAR_NUMBER)
{
typval_T *tv1 = &ppconst->pp_tv[ppconst_used];
typval_T *tv2 = &ppconst->pp_tv[ppconst_used + 1];
varnumber_T res = 0;
typval_T *tv1 = &ppconst->pp_tv[ppconst_used];
typval_T *tv2 = &ppconst->pp_tv[ppconst_used + 1];
varnumber_T res = 0;
int failed = FALSE;
// both are numbers: compute the result
switch (*op)
@@ -4301,12 +4302,14 @@ compile_expr6(char_u **arg, cctx_T *cctx, ppconst_T *ppconst)
case '*': res = tv1->vval.v_number * tv2->vval.v_number;
break;
case '/': res = num_divide(tv1->vval.v_number,
tv2->vval.v_number);
tv2->vval.v_number, &failed);
break;
case '%': res = num_modulus(tv1->vval.v_number,
tv2->vval.v_number);
tv2->vval.v_number, &failed);
break;
}
if (failed)
return FAIL;
tv1->vval.v_number = res;
--ppconst->pp_used;
}