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fixes #11205

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This commit is contained in:
Araq 2019-05-28 21:30:41 +02:00
commit 8bb1a6b041
4 changed files with 120 additions and 1 deletions
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5
lib/system/chcks.nim
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@ -114,3 +114,8 @@ when not defined(nimV2):
if x == nil: return false
x = x.base
return true
when defined(nimV2):
proc nimFieldDiscriminantCheckV2(oldDiscVal, newDiscVal: uint8) {.compilerProc.} =
if oldDiscVal != newDiscVal:
sysFatal(FieldError, "assignment to discriminant changes object branch")