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avoid crash when optimizer has multiple replacements of the same node

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This commit is contained in:
Irmen de Jong 2020-10-11 00:37:35 +02:00
parent 6f5b645995
commit 72b6dc3de7
1 changed files with 2 additions and 1 deletions
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3
compiler/src/prog8/ast/statements/AstStatements.kt
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@ -235,7 +235,8 @@ open class VarDecl(val type: VarDeclType,
}
override fun replaceChildNode(node: Node, replacement: Node) {
require(replacement is Expression && node===value)
// TODO the check that node===value is too strict sometimes, but leaving it out allows for bugs to creep through ... :( Perhaps check when adding the replace if there is already a replace on the same node?
require(replacement is Expression)
value = replacement
replacement.parent = this
}