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-rw-r--r--Source/VCExpr/VCExprASTVisitors.cs6
1 files changed, 5 insertions, 1 deletions
diff --git a/Source/VCExpr/VCExprASTVisitors.cs b/Source/VCExpr/VCExprASTVisitors.cs
index 1675a3a7..e87b04ce 100644
--- a/Source/VCExpr/VCExprASTVisitors.cs
+++ b/Source/VCExpr/VCExprASTVisitors.cs
@@ -257,7 +257,11 @@ Contract.Requires(node != null);
Result res = StandardResult(node, arg);
- if (node.TypeParamArity == 0) {
+ if (node.TypeParamArity == 0 &&
+ (node.Op == VCExpressionGenerator.AndOp ||
+ node.Op == VCExpressionGenerator.OrOp ||
+ node.Op == VCExpressionGenerator.ImpliesOp))
+ {
Contract.Assert(node.Op != null);
VCExprOp op = node.Op;