Replace owning raw pointers with unique_ptr

Implement @tautschnig's fixes

Fix residual memory leak from narrow_argv

Author: reuk

src/analyses/ai.h

@@ -12,12 +12,14 @@ Author: Daniel Kroening, [email protected]
 #ifndef CPROVER_ANALYSES_AI_H
 #define CPROVER_ANALYSES_AI_H
 
-#include <map>
 #include <iosfwd>
+#include <map>
+#include <memory>
 
 #include <util/json.h>
 #include <util/xml.h>
 #include <util/expr.h>
+#include <util/make_unique.h>
 
 #include <goto-programs/goto_model.h>
 
@@ -334,7 +336,7 @@ class ai_baset
     const namespacet &ns)=0;
   virtual statet &get_state(locationt l)=0;
   virtual const statet &find_state(locationt l) const=0;
-  virtual statet* make_temporary_state(const statet &s)=0;
+  virtual std::unique_ptr<statet> make_temporary_state(const statet &s)=0;
 };
 
 // domainT is expected to be derived from ai_domain_baseT
@@ -400,9 +402,9 @@ class ait:public ai_baset
       static_cast<const domainT &>(src), from, to);
   }
 
-  statet *make_temporary_state(const statet &s) override
+  std::unique_ptr<statet> make_temporary_state(const statet &s) override
   {
-    return new domainT(static_cast<const domainT &>(s));
+    return util_make_unique<domainT>(static_cast<const domainT &>(s));
   }
 
   void fixedpoint(

src/analyses/goto_rw.cpp

@@ -10,8 +10,9 @@ Date: April 2010
 
 #include "goto_rw.h"
 
-#include <limits>
 #include <algorithm>
+#include <limits>
+#include <memory>
 
 #include <util/std_code.h>
 #include <util/std_expr.h>
@@ -20,6 +21,7 @@ Date: April 2010
 #include <util/endianness_map.h>
 #include <util/arith_tools.h>
 #include <util/simplify_expr.h>
+#include <util/make_unique.h>
 
 #include <goto-programs/goto_functions.h>
 
@@ -49,12 +51,12 @@ rw_range_sett::~rw_range_sett()
   for(rw_range_sett::objectst::iterator it=r_range_set.begin();
       it!=r_range_set.end();
       ++it)
-    delete it->second;
+    it->second=nullptr;
 
   for(rw_range_sett::objectst::iterator it=w_range_set.begin();
       it!=w_range_set.end();
       ++it)
-    delete it->second;
+    it->second=nullptr;
 }
 
 void rw_range_sett::output(std::ostream &out) const
@@ -461,16 +463,18 @@ void rw_range_sett::add(
   const range_spect &range_start,
   const range_spect &range_end)
 {
-  objectst::iterator entry=(mode==get_modet::LHS_W ? w_range_set : r_range_set).
-    insert(
-      std::pair<const irep_idt&, range_domain_baset*>(
-        identifier, nullptr)).first;
+  objectst::iterator entry=
+    (mode==get_modet::LHS_W?w_range_set:r_range_set)
+       .insert(
+         std::pair<const irep_idt &, std::unique_ptr<range_domain_baset>>(
+           identifier, nullptr))
+       .first;
 
   if(entry->second==nullptr)
-    entry->second=new range_domaint();
+    entry->second=util_make_unique<range_domaint>();
 
-  static_cast<range_domaint*>(entry->second)->push_back(
-    std::make_pair(range_start, range_end));
+  static_cast<range_domaint&>(*entry->second).push_back(
+    {range_start, range_end});
 }
 
 void rw_range_sett::get_objects_rec(
@@ -662,17 +666,18 @@ void rw_guarded_range_set_value_sett::add(
   const range_spect &range_start,
   const range_spect &range_end)
 {
-  objectst::iterator entry=(mode==get_modet::LHS_W ? w_range_set : r_range_set).
-    insert(
-      std::pair<const irep_idt&, range_domain_baset*>(
-        identifier, nullptr)).first;
+  objectst::iterator entry=
+    (mode==get_modet::LHS_W?w_range_set:r_range_set)
+      .insert(
+        std::pair<const irep_idt &, std::unique_ptr<range_domain_baset>>(
+          identifier, nullptr))
+      .first;
 
   if(entry->second==nullptr)
-    entry->second=new guarded_range_domaint();
+    entry->second=util_make_unique<guarded_range_domaint>();
 
-  static_cast<guarded_range_domaint*>(entry->second)->insert(
-    std::make_pair(range_start,
-                   std::make_pair(range_end, guard.as_expr())));
+  static_cast<guarded_range_domaint&>(*entry->second).insert(
+    {range_start, {range_end, guard.as_expr()}});
 }
 
 void goto_rw(goto_programt::const_targett target,

src/analyses/goto_rw.h

@@ -15,6 +15,7 @@ Date: April 2010
 #include <map>
 #include <ostream>
 #include <limits>
+#include <memory> // unique_ptr
 
 #include <util/guard.h>
 
@@ -83,10 +84,10 @@ class rw_range_sett
 {
 public:
   #ifdef USE_DSTRING
-  typedef std::map<irep_idt, range_domain_baset*> objectst;
+  typedef std::map<irep_idt, std::unique_ptr<range_domain_baset>> objectst;
   #else
-  typedef std::unordered_map<irep_idt, range_domain_baset*, string_hash>
-    objectst;
+  typedef std::unordered_map<
+    irep_idt, std::unique_ptr<range_domain_baset>, string_hash> objectst;
   #endif
 
   virtual ~rw_range_sett();
@@ -108,8 +109,8 @@ class rw_range_sett
 
   const range_domaint &get_ranges(objectst::const_iterator it) const
   {
-    PRECONDITION(dynamic_cast<range_domaint*>(it->second)!=nullptr);
-    return *static_cast<range_domaint*>(it->second);
+    PRECONDITION(dynamic_cast<range_domaint*>(it->second.get())!=nullptr);
+    return static_cast<const range_domaint &>(*it->second);
   }
 
   enum class get_modet { LHS_W, READ };
@@ -277,8 +278,9 @@ class rw_guarded_range_set_value_sett:public rw_range_set_value_sett
 
   const guarded_range_domaint &get_ranges(objectst::const_iterator it) const
   {
-    PRECONDITION(dynamic_cast<guarded_range_domaint*>(it->second)!=nullptr);
-    return *static_cast<guarded_range_domaint*>(it->second);
+    PRECONDITION(
+      dynamic_cast<guarded_range_domaint*>(it->second.get())!=nullptr);
+    return static_cast<const guarded_range_domaint &>(*it->second);
   }
 
   virtual void get_objects_rec(

src/analyses/local_may_alias.h

@@ -12,10 +12,11 @@ Author: Daniel Kroening, [email protected]
 #ifndef CPROVER_ANALYSES_LOCAL_MAY_ALIAS_H
 #define CPROVER_ANALYSES_LOCAL_MAY_ALIAS_H
 
-#include <stack>
 #include <memory>
+#include <stack>
 
 #include <util/union_find.h>
+#include <util/make_unique.h>
 
 #include "locals.h"
 #include "dirty.h"
@@ -117,8 +118,7 @@ class local_may_alias_factoryt
     goto_functionst::function_mapt::const_iterator f_it2=
       goto_functions->function_map.find(fkt);
     assert(f_it2!=goto_functions->function_map.end());
-    return *(fkt_map[fkt]=std::unique_ptr<local_may_aliast>(
-              new local_may_aliast(f_it2->second)));
+    return *(fkt_map[fkt]=util_make_unique<local_may_aliast>(f_it2->second));
   }
 
   local_may_aliast &operator()(goto_programt::const_targett t)

src/analyses/reaching_definitions.cpp

@@ -15,14 +15,26 @@ Date: February 2013
 
 #include "reaching_definitions.h"
 
+#include <memory>
+
 #include <util/pointer_offset_size.h>
 #include <util/prefix.h>
+#include <util/make_unique.h>
 
 #include <pointer-analysis/value_set_analysis_fi.h>
 
 #include "is_threaded.h"
 #include "dirty.h"
 
+reaching_definitions_analysist::reaching_definitions_analysist(
+  const namespacet &_ns):
+    concurrency_aware_ait<rd_range_domaint>(),
+    ns(_ns)
+{
+}
+
+reaching_definitions_analysist::~reaching_definitions_analysist()=default;
+
 void rd_range_domaint::populate_cache(const irep_idt &identifier) const
 {
   assert(bv_container);
@@ -717,26 +729,16 @@ const rd_range_domaint::ranges_at_loct &rd_range_domaint::get(
     return entry->second;
 }
 
-reaching_definitions_analysist::~reaching_definitions_analysist()
-{
-  if(is_dirty)
-    delete is_dirty;
-  if(is_threaded)
-    delete is_threaded;
-  if(value_sets)
-    delete value_sets;
-}
-
 void reaching_definitions_analysist::initialize(
   const goto_functionst &goto_functions)
 {
-  value_set_analysis_fit *value_sets_=new value_set_analysis_fit(ns);
+  auto value_sets_=util_make_unique<value_set_analysis_fit>(ns);
   (*value_sets_)(goto_functions);
-  value_sets=value_sets_;
+  value_sets=std::move(value_sets_);
 
-  is_threaded=new is_threadedt(goto_functions);
+  is_threaded=util_make_unique<is_threadedt>(goto_functions);
 
-  is_dirty=new dirtyt(goto_functions);
+  is_dirty=util_make_unique<dirtyt>(goto_functions);
 
   concurrency_aware_ait<rd_range_domaint>::initialize(goto_functions);
 }

src/analyses/reaching_definitions.h

@@ -241,14 +241,7 @@ class reaching_definitions_analysist:
 {
 public:
   // constructor
-  explicit reaching_definitions_analysist(const namespacet &_ns):
-    concurrency_aware_ait<rd_range_domaint>(),
-    ns(_ns),
-    value_sets(nullptr),
-    is_threaded(nullptr),
-    is_dirty(nullptr)
-  {
-  }
+  explicit reaching_definitions_analysist(const namespacet &_ns);
 
   virtual ~reaching_definitions_analysist();
 
@@ -290,9 +283,9 @@ class reaching_definitions_analysist:
 
 protected:
   const namespacet &ns;
-  value_setst * value_sets;
-  is_threadedt * is_threaded;
-  dirtyt * is_dirty;
+  std::unique_ptr<value_setst> value_sets;
+  std::unique_ptr<is_threadedt> is_threaded;
+  std::unique_ptr<dirtyt> is_dirty;
 };
 
 #endif // CPROVER_ANALYSES_REACHING_DEFINITIONS_H

src/analyses/static_analysis.h

@@ -16,10 +16,13 @@ Author: Daniel Kroening, [email protected]
 #error Deprecated, use ai.h instead
 #endif
 
-#include <map>
 #include <iosfwd>
+#include <map>
+#include <memory>
 #include <unordered_set>
 
+#include <util/make_unique.h>
+
 #include <goto-programs/goto_functions.h>
 
 // don't use me -- I am just a base class
@@ -252,7 +255,7 @@ class static_analysis_baset
   virtual void generate_state(locationt l)=0;
   virtual statet &get_state(locationt l)=0;
   virtual const statet &get_state(locationt l) const=0;
-  virtual statet* make_temporary_state(statet &s)=0;
+  virtual std::unique_ptr<statet> make_temporary_state(statet &s)=0;
 
   typedef domain_baset::expr_sett expr_sett;
 
@@ -331,9 +334,9 @@ class static_analysist:public static_analysis_baset
     return static_cast<T &>(a).merge(static_cast<const T &>(b), to);
   }
 
-  virtual statet *make_temporary_state(statet &s)
+  virtual std::unique_ptr<statet> make_temporary_state(statet &s)
   {
-    return new T(static_cast<T &>(s));
+    return util_make_unique<T>(static_cast<T &>(s));
   }
 
   virtual void generate_state(locationt l)

src/ansi-c/ansi_c_language.cpp

@@ -139,9 +139,9 @@ void ansi_c_languaget::show_parse(std::ostream &out)
   parse_tree.output(out);
 }
 
-languaget *new_ansi_c_language()
+std::unique_ptr<languaget> new_ansi_c_language()
 {
-  return new ansi_c_languaget;
+  return util_make_unique<ansi_c_languaget>();
 }
 
 bool ansi_c_languaget::from_expr(

src/ansi-c/ansi_c_language.h

@@ -10,7 +10,12 @@ Author: Daniel Kroening, [email protected]
 #ifndef CPROVER_ANSI_C_ANSI_C_LANGUAGE_H
 #define CPROVER_ANSI_C_ANSI_C_LANGUAGE_H
 
+/*! \defgroup gr_ansi_c ANSI-C front-end */
+
+#include <memory>
+
 #include <util/language.h>
+#include <util/make_unique.h>
 
 #include "ansi_c_parse_tree.h"
 
@@ -59,8 +64,8 @@ class ansi_c_languaget:public languaget
     exprt &expr,
     const namespacet &ns) override;
 
-  languaget *new_language() override
-  { return new ansi_c_languaget; }
+  std::unique_ptr<languaget> new_language() override
+  { return util_make_unique<ansi_c_languaget>(); }
 
   std::string id() const override { return "C"; }
   std::string description() const override { return "ANSI-C 99"; }
@@ -73,6 +78,6 @@ class ansi_c_languaget:public languaget
   std::string parse_path;
 };
 
-languaget *new_ansi_c_language();
+std::unique_ptr<languaget> new_ansi_c_language();
 
 #endif // CPROVER_ANSI_C_ANSI_C_LANGUAGE_H

src/cbmc/bmc.cpp

@@ -314,11 +314,11 @@ safety_checkert::resultt bmct::run(
   std::unique_ptr<memory_model_baset> memory_model;
 
   if(mm.empty() || mm=="sc")
-    memory_model=std::unique_ptr<memory_model_baset>(new memory_model_sct(ns));
+    memory_model=util_make_unique<memory_model_sct>(ns);
   else if(mm=="tso")
-    memory_model=std::unique_ptr<memory_model_baset>(new memory_model_tsot(ns));
+    memory_model=util_make_unique<memory_model_tsot>(ns);
   else if(mm=="pso")
-    memory_model=std::unique_ptr<memory_model_baset>(new memory_model_psot(ns));
+    memory_model=util_make_unique<memory_model_psot>(ns);
   else
   {
     error() << "Invalid memory model " << mm

src/cbmc/cbmc_main.cpp

@@ -34,7 +34,9 @@ extern unsigned long long irep_cmp_ne_cnt;
 #ifdef _MSC_VER
 int wmain(int argc, const wchar_t **argv_wide)
 {
-  const char **argv=narrow_argv(argc, argv_wide);
+  auto vec=narrow_argv(argc, argv_wide);
+  auto narrow=to_c_str_array(std::begin(vec), std::end(vec));
+  auto argv=narrow.data();
 #else
 int main(int argc, const char **argv)
 {