From 9db0ef7df43a067a0063a3652f0acd54e982ba13 Mon Sep 17 00:00:00 2001
From: ajreynol <andrew.j.reynolds@gmail.com>
Date: Wed, 9 Nov 2016 13:01:20 -0600
Subject: [PATCH] Fix tptp parser memory leaks for include.

---
 src/parser/tptp/tptp.cpp | 13 ++++++++++---
 src/parser/tptp/tptp.h   |  3 +++
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/parser/tptp/tptp.cpp b/src/parser/tptp/tptp.cpp
index 193c27e11..ba8eb7012 100644
--- a/src/parser/tptp/tptp.cpp
+++ b/src/parser/tptp/tptp.cpp
@@ -56,6 +56,12 @@ Tptp::Tptp(ExprManager* exprManager, Input* input, bool strictMode, bool parseOn
   d_hasConjecture = false;
 }
 
+Tptp::~Tptp() {
+  for( unsigned i=0; i<d_in_created.size(); i++ ){
+    d_in_created[i]->free(d_in_created[i]);
+  }
+}
+
 void Tptp::addTheory(Theory theory) {
   ExprManager * em = getExprManager();
   switch(theory) {
@@ -93,7 +99,7 @@ void Tptp::addTheory(Theory theory) {
 /* The include are managed in the lexer but called in the parser */
 // Inspired by http://www.antlr3.org/api/C/interop.html
 
-bool newInputStream(std::string fileName, pANTLR3_LEXER lexer) {
+bool newInputStream(std::string fileName, pANTLR3_LEXER lexer, std::vector< pANTLR3_INPUT_STREAM >& inc ) {
   Debug("parser") << "Including " << fileName << std::endl;
   // Create a new input stream and take advantage of built in stream stacking
   // in C target runtime.
@@ -122,6 +128,7 @@ bool newInputStream(std::string fileName, pANTLR3_LEXER lexer) {
   // back to the input stream and trying to get the text for it will abort if you
   // close the input stream too early.
   //
+  inc.push_back( in );
 
   //TODO what said before
   return true;
@@ -170,7 +177,7 @@ void Tptp::includeFile(std::string fileName) {
       currentDirFileName = std::string(inputName, 0, pos + 1);
     }
     currentDirFileName.append(fileName);
-    if(newInputStream(currentDirFileName,lexer)) {
+    if(newInputStream(currentDirFileName,lexer, d_in_created)) {
       return;
     }
   } else {
@@ -183,7 +190,7 @@ void Tptp::includeFile(std::string fileName) {
   };
 
   std::string tptpDirFileName = d_tptpDir + fileName;
-  if(! newInputStream(tptpDirFileName,lexer)) {
+  if(! newInputStream(tptpDirFileName,lexer, d_in_created)) {
     parseError("Couldn't open included file: " + fileName
                + " at " + currentDirFileName + " or " + tptpDirFileName);
   }
diff --git a/src/parser/tptp/tptp.h b/src/parser/tptp/tptp.h
index 06b7fac3c..2a2a5095f 100644
--- a/src/parser/tptp/tptp.h
+++ b/src/parser/tptp/tptp.h
@@ -47,6 +47,8 @@ class Tptp : public Parser {
   // The set of expression that already have a bridge
   std::hash_set<Expr, ExprHashFunction> d_r_converted;
   std::hash_map<std::string, Expr, StringHashFunction> d_distinct_objects;
+  
+  std::vector< pANTLR3_INPUT_STREAM > d_in_created;
 
   // TPTP directory where to find includes;
   // empty if none could be determined
@@ -143,6 +145,7 @@ protected:
   Tptp(ExprManager* exprManager, Input* input, bool strictMode = false, bool parseOnly = false);
 
 public:
+  ~Tptp();
   /**
    * Add theory symbols to the parser state.
    *
-- 
2.30.2