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patch 8.2.2378: Vim9: no error message for dividing by zero

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Problem:    Vim9: no error message for dividing by zero.
Solution:   Give an error message. (issue #7704)
This commit is contained in:
Bram Moolenaar 2021-01-20 21:23:14 +01:00
parent a28639e711
commit 99880f96cf
5 changed files with 20 additions and 6 deletions
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2
src/errors.h
View File

@ -343,3 +343,5 @@ EXTERN char e_mismatched_enddef[]
INIT(= N_("E1152: Mismatched enddef"));
EXTERN char e_invalid_operation_for_bool[]
INIT(= N_("E1153: Invalid operation for bool"));
EXTERN char e_divide_by_zero[]
INIT(= N_("E1154: Divide by zero"));

7
src/eval.c
View File

@ -63,8 +63,10 @@ num_divide(varnumber_T n1, varnumber_T n2)
{
varnumber_T result;
if (n2 == 0) // give an error message?
if (n2 == 0)
{
if (in_vim9script())
emsg(_(e_divide_by_zero));
if (n1 == 0)
result = VARNUM_MIN; // similar to NaN
else if (n1 < 0)
@ -84,7 +86,8 @@ num_divide(varnumber_T n1, varnumber_T n2)
varnumber_T
num_modulus(varnumber_T n1, varnumber_T n2)
{
// Give an error when n2 is 0?
if (n2 == 0 && in_vim9script())
emsg(_(e_divide_by_zero));
return (n2 == 0) ? 0 : (n1 % n2);
}

5
src/testdir/test_vim9_expr.vim
View File

@ -1376,7 +1376,6 @@ def Test_expr6()
assert_equal(1, g:anint / 6)
assert_equal(2, g:anint
/ g:thefour)
assert_true(1 / 0 > 99999)
assert_equal(5, 11 % 6)
assert_equal(4, g:anint % 6)
@ -1384,7 +1383,6 @@ def Test_expr6()
g:anint)
assert_equal(2, g:anint
% g:thefour)
assert_equal(0, 1 % 0)
assert_equal(4, 6 * 4 / 6)
@ -1405,6 +1403,9 @@ def Test_expr6()
CheckDefFailure(["var x = 6 * xxx"], 'E1001:', 1)
CheckDefFailure(["var d = 6 * "], 'E1097:', 3)
CheckDefExecAndScriptFailure(['echo 1 / 0'], 'E1154', 1)
CheckDefExecAndScriptFailure(['echo 1 % 0'], 'E1154', 1)
enddef
def Test_expr6_vim9script()

2
src/version.c
View File

@ -750,6 +750,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
2378,
/**/
2377,
/**/

10
src/vim9execute.c
View File

@ -2954,10 +2954,16 @@ call_def_function(
switch (iptr->isn_arg.op.op_type)
{
case EXPR_MULT: n1 = n1 * n2; break;
case EXPR_DIV: n1 = num_divide(n1, n2); break;
case EXPR_DIV: n1 = num_divide(n1, n2);
if (n2 == 0)
goto on_error;
break;
case EXPR_SUB: n1 = n1 - n2; break;
case EXPR_ADD: n1 = n1 + n2; break;
default: n1 = num_modulus(n1, n2); break;
default: n1 = num_modulus(n1, n2);
if (n2 == 0)
goto on_error;
break;
}
clear_tv(tv1);
clear_tv(tv2);