From 3255e4335f25f35318a41f174ec15a28b0f0520d Mon Sep 17 00:00:00 2001
From: Abdalrhman Mohamed <32971963+abdoo8080@users.noreply.github.com>
Date: Tue, 8 Dec 2020 14:10:10 -0600
Subject: Fix a bug with synth-fun printer (#5512)

This PR fixes #5448. SynthFunCommand::toStream used to call d_grammar->resolve even when d_grammar is a nullptr. This PR fixes the issue and modifies the signature of Printer::toStreamCmdSynthFun to make it clear that grammar is an optional argument.
---
 src/smt/command.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/smt')

diff --git a/src/smt/command.cpp b/src/smt/command.cpp
index cfd25fa3b..2a316409e 100644
--- a/src/smt/command.cpp
+++ b/src/smt/command.cpp
@@ -689,7 +689,8 @@ void SynthFunCommand::toStream(std::ostream& out,
       nodeVars,
       d_sort.getTypeNode(),
       d_isInv,
-      d_grammar->resolve().getTypeNode());
+      d_grammar == nullptr ? TypeNode::null()
+                           : d_grammar->resolve().getTypeNode());
 }
 
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