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close #10815 #15696

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close #10815 #15696

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30 changes: 30 additions & 0 deletions tests/vm/tvmmisc.nim
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Original file line number Diff line number Diff line change
Expand Up @@ -231,6 +231,35 @@ block:
doAssert e == @[]
doAssert f == @[]

block: # bug #10815
block:
# this used to crash
type
Opcode = enum
iChar, iSet
Inst = object
case code: Opcode
of iChar:
c: char
of iSet:
cs: set[char]

Patt = seq[Inst]
proc `$`(p: Patt): string =
discard
proc P(): Patt =
result.add Inst(code: iSet)
const a = P()
doAssert $a == ""

block:
# probably used to crash
type CharSet {.union.} = object
cs: set[char]
vs: array[4, uint64]
const a = Charset(cs: {'a'..'z'})
doAssert a.repr.len > 0

import tables

block: # bug #8007
Expand Down Expand Up @@ -281,3 +310,4 @@ block: # bug #8007
# OK with seq & object variants
const d = @[Cost(kind: Fixed, cost: 999), Cost(kind: Dynamic, handler: foo)]
doAssert $d == "@[(kind: Fixed, cost: 999), (kind: Dynamic, handler: ...)]"