Files
Nim/tests/vm/twrong_concat.nim
Andreas Rumpf 86e79f5cec fixes #3804
2016-04-04 01:41:14 +02:00

29 lines
566 B
Nim

discard """
output: '''success'''
"""
# bug #3804
#import sequtils
type AnObj = ref object
field: string
#proc aBug(objs: seq[AnObj]) {.compileTime.} =
# discard objs.mapIt(it.field & " bug")
proc sameBug(objs: seq[AnObj]) {.compileTime.} =
var strSeq = newSeq[string](objs.len)
strSeq[0] = objs[0].field & " bug"
static:
var objs: seq[AnObj] = @[]
objs.add(AnObj(field: "hello"))
sameBug(objs)
# sameBug(objs)
echo objs[0].field
assert(objs[0].field == "hello") # fails, because (objs[0].field == "hello bug") - mutated!
echo "success"