From: Andrew Reynolds <andrew.j.reynolds@gmail.com>
Date: Thu, 30 Jul 2020 14:54:57 +0000 (-0500)
Subject: Fix null case for sygus printing (#4793)
X-Git-Tag: cvc5-1.0.0~3069
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=95ca28b7e8466e956898da377e253fc32c58e52d;p=cvc5.git

Fix null case for sygus printing (#4793)

Avoids crashing on some of our debug traces.
---

diff --git a/src/theory/quantifiers/sygus/term_database_sygus.cpp b/src/theory/quantifiers/sygus/term_database_sygus.cpp
index ff1b172e9..ac10522a2 100644
--- a/src/theory/quantifiers/sygus/term_database_sygus.cpp
+++ b/src/theory/quantifiers/sygus/term_database_sygus.cpp
@@ -731,6 +731,11 @@ void TermDbSygus::toStreamSygus(const char* c, Node n)
 
 void TermDbSygus::toStreamSygus(std::ostream& out, Node n)
 {
+  if (n.isNull())
+  {
+    out << n;
+    return;
+  }
   // use external conversion
   out << datatypes::utils::sygusToBuiltin(n, true);
 }