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Don't crash if GC_{un,}ref is called on nil (#9445)

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Fixes #9442
This commit is contained in:
LemonBoy 2018-10-22 17:09:15 +02:00 • committed by Andreas Rumpf
commit b613092de8
2 changed files with 13 additions and 2 deletions
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11
tests/magics/tmagics.nim
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@ -43,3 +43,14 @@ block t8693:
doAssert bar(Foo, Foo)
doAssert bar(any, Foo)
doAssert bar(Foo, any) == false
block t9442:
var v1: ref char
var v2: string
var v3: seq[char]
GC_ref(v1)
GC_unref(v1)
GC_ref(v2)
GC_unref(v2)
GC_ref(v3)
GC_unref(v3)