Files
Nim/tests/js/tarrayboundscheck.nim
hlaaftana 800ce5b950 Fix negative indexed arrays for JS, refs #13966 (#14152)
* Fix negative arrays for JS, refs #13966

* small extra fix: no need to .slice() cstring in JS
2020-04-29 08:59:08 +02:00

50 lines
906 B
Nim

discard """
output: '''idx out of bounds: -1
month out of bounds: 0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
month out of bounds: 13
idx out of bounds: 14
'''
"""
{.push boundChecks:on.}
# see issue #6532:
# js backend 0.17.3: array bounds check for non zero based arrays is buggy
proc test_arrayboundscheck() =
var months: array[1..12, string] =
["Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
var indices = [0,1,2,3,4,5,6,7,8,9,10,11,12,13]
for i in -1 .. 14:
try:
let idx = indices[i]
try:
echo months[idx]
except:
echo "month out of bounds: ", idx
except:
echo "idx out of bounds: ", i
# #13966
var negativeIndexed: array[-2..2, int] = [0, 1, 2, 3, 4]
negativeIndexed[-1] = 2
negativeIndexed[1] = 2
doAssert negativeIndexed == [0, 2, 2, 2, 4]
test_arrayboundscheck()
{.pop.}