Fix #713

viperproject · Feb 23, 2024 · ced4241 · ced4241
1 parent 8c65681
commit ced4241
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/src/main/scala/viper/gobra/translator/encodings/closures/ClosureSpecsEncoder.scala b/src/main/scala/viper/gobra/translator/encodings/closures/ClosureSpecsEncoder.scala
@@ -208,7 +208,8 @@ protected class ClosureSpecsEncoder {
     val result = in.Parameter.Out(Names.closureArg, genericFuncType)(info)
     val satisfiesSpec = in.ExprAssertion(in.ClosureImplements(result, in.ClosureSpec(func, Map.empty)(info))(info))(info)
     val (args, captAssertions) = capturedArgsAndAssertions(ctx)(result, captured(ctx)(func), info)
-    val getter = in.PureFunction(proxy, args, Vector(result), Vector.empty, Vector(satisfiesSpec) ++ captAssertions, Vector.empty, None, false)(memberOrLit(ctx)(func).info)
+    val notNil = in.ExprAssertion(in.UneqCmp(result, in.NilLit(genericFuncType)(info))(info))(info)
+    val getter = in.PureFunction(proxy, args, Vector(result), Vector.empty, Vector(satisfiesSpec) ++ captAssertions :+ notNil, Vector.empty, None, false)(memberOrLit(ctx)(func).info)
     ctx.defaultEncoding.pureFunction(getter)(ctx)
   }
 

diff --git a/src/test/resources/regressions/issues/000713.gobra b/src/test/resources/regressions/issues/000713.gobra
@@ -0,0 +1,9 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/publicdomain/zero/1.0/
+
+package issue000713
+
+func foo() {
+    f := func g() {}
+    assert f != nil
+}