Corrected problem with uninitialized value_t's.

Makefile.am

@@ -22,15 +22,15 @@ endif
 AM_YFLAGS = -d
 AM_LFLAGS = -o $(LEX_OUTPUT_ROOT).c
 
-WARNFLAGS  = -Wall -Wextra -Wfloat-equal -Wno-endif-labels
-WARNFLAGS += -Wcast-qual -Wcast-align -Wwrite-strings -Wconversion
-WARNFLAGS += -Wconversion -Wshorten-64-to-32 -Wsign-compare
-WARNFLAGS += -Wmissing-field-initializers -pedantic-errors
-WARNFLAGS += -Weffc++ -Wstrict-null-sentinel -Wold-style-cast
-WARNFLAGS += -Woverloaded-virtual -Wsign-promo
+WARNFLAGS  = -Wall #-pedantic-errors
+#WARNFLAGS += -Wextra -Wfloat-equal -Wno-endif-labels -Wcast-qual
+#WARNFLAGS += -Wcast-align -Wwrite-strings -Wconversion -Wconversion
+#WARNFLAGS += -Wshorten-64-to-32 -Wsign-compare -Weffc++ -Wsign-promo
+#WARNFLAGS += -Wmissing-field-initializers -Wstrict-null-sentinel
+#WARNFLAGS += -Wold-style-cast -Woverloaded-virtual 
 
 libledger_la_CPPFLAGS = -I$(top_builddir)/gdtoa -I$(srcdir)/gdtoa \
-			-I$(srcdir)/src #$(WARNFLAGS)
+			-I$(srcdir)/src $(WARNFLAGS)
 libledger_la_LDFLAGS  = -release $(PACKAGE_VERSION)
 
 libledger_la_SOURCES = \

src/builder.h

@@ -37,6 +37,8 @@ protected:
   position_t current_position;
 
 public:
+  virtual ~builder_t() {}
+
   virtual void     set_start_position(std::istream& in) {}
   virtual void     set_position(const position_t& position) {}
   virtual position_t& position() { return current_position; }
@@ -134,11 +136,11 @@ public:
 
   virtual node_t * end_node(const string& name,
 			    const optional<position_t>& end_pos = none) {
-    current = &*current->parent();
+    return current = &*current->parent();
   }
   virtual node_t * end_node(const node_t::nameid_t name_id,
 			    const optional<position_t>& end_pos = none) {
-    current = &*current->parent();
+    return current = &*current->parent();
   }
 };
 
@@ -236,10 +238,12 @@ public:
   virtual node_t * end_node(const string& name,
 			    const optional<position_t>& end_pos = none) {
     outs << "</" << name << '>';
+    return NULL;
   }
   virtual node_t * end_node(const node_t::nameid_t name_id,
 			    const optional<position_t>& end_pos = none) {
     end_node("hello", end_pos);
+    return NULL;
   }
 };
 

src/main.cc

@@ -216,8 +216,6 @@ static int read_and_report(ledger::report_t * report, int argc, char * argv[],
       throw_(std::logic_error, "Failed to fork child process");
     }
     else if (status == 0) {	// child
-      const char *arg0;
-
       // Duplicate pipe's reading end into stdin
       status = dup2(pfd[0], STDIN_FILENO);
       if (status == -1)

src/node.h

@@ -232,6 +232,7 @@ public:
 
   virtual value_t to_value() const {
     throw_(std::logic_error, "Cannot convert parent node to a value");
+    return NULL_VALUE;
   }
 
   void print(std::ostream& out) const;

src/option.cc

@@ -84,7 +84,8 @@ namespace {
 #endif
       scoped_ptr<xml::xpath_t::scope_t> args;
       if (arg) {
-	args.reset(new xml::xpath_t::scope_t(scope, xml::xpath_t::scope_t::ARGUMENT));
+	args.reset(new xml::xpath_t::scope_t
+		   (scope, xml::xpath_t::scope_t::ARGUMENT));
 	args->args.push_back(value_t(arg, true));
       }
       opt(args.get());
@@ -102,15 +103,12 @@ namespace {
   }
 }
 
-bool process_option(const string& name, xml::xpath_t::scope_t * scope,
+void process_option(const string& name, xml::xpath_t::scope_t * scope,
 		    const char * arg)
 {
   op_bool_tuple opt(find_option(scope, name));
-  if (opt.get<0>()) {
+  if (opt.get<0>())
     process_option(opt.get<0>()->as_function(), scope, arg);
-    return true;
-  }
-  return false;
 }
 
 void process_environment(const char ** envp, const string& tag,
@@ -137,8 +135,7 @@ void process_environment(const char ** envp, const string& tag,
 #if 0
 	try {
 #endif
-	  if (! process_option(string(buf), scope, q + 1))
-	    ; //throw_(option_error, "unknown option");
+	  process_option(string(buf), scope, q + 1);
 #if 0
 	}
 	catch (error * err) {

src/option.h

@@ -36,7 +36,7 @@
 
 namespace ledger {
 
-bool process_option(const string& name, xml::xpath_t::scope_t * scope,
+void process_option(const string& name, xml::xpath_t::scope_t * scope,
 		    const char * arg = NULL);
 
 void process_environment(const char ** envp, const string& tag,

src/report.cc

@@ -79,6 +79,8 @@ value_t report_t::ftime(xml::xpath_t::scope_t * locals)
     date_format = moment_t::output_format;
 
   return value_t(date.as_string(date_format), true);
+#else
+  return NULL_VALUE;
 #endif
 }
 

src/report.h

@@ -94,28 +94,35 @@ class report_t : public xml::xpath_t::scope_t
   }
   value_t option_eval(xml::xpath_t::scope_t * locals) {
     eval(locals->args[0].as_string());
+    return NULL_VALUE;
   }
 
   value_t option_amount(xml::xpath_t::scope_t * locals) {
     eval(string("t=") + locals->args[0].as_string());
+    return NULL_VALUE;
   }
   value_t option_total(xml::xpath_t::scope_t * locals) {
     eval(string("T()=") + locals->args[0].as_string());
+    return NULL_VALUE;
   }
 
   value_t option_format(xml::xpath_t::scope_t * locals) {
     format_string = locals->args[0].as_string();
+    return NULL_VALUE;
   }
 
   value_t option_raw(xml::xpath_t::scope_t * locals) {
     raw_mode = true;
+    return NULL_VALUE;
   }
 
   value_t option_foo(xml::xpath_t::scope_t * locals) {
     std::cout << "This is foo" << std::endl;
+    return NULL_VALUE;
   }
   value_t option_bar(xml::xpath_t::scope_t * locals) {
     std::cout << "This is bar: " << locals->args[0] << std::endl;
+    return NULL_VALUE;
   }
 
   //
@@ -125,35 +132,44 @@ class report_t : public xml::xpath_t::scope_t
 #if 0
   value_t option_select(xml::xpath_t::scope_t * locals) {
     transforms.push_back(new select_transform(locals->args[0].as_string()));
+    return NULL_VALUE;
   }
   value_t option_limit(xml::xpath_t::scope_t * locals) {
     string expr = (string("//xact[") +
 			locals->args[0].as_string() + "]");
     transforms.push_back(new select_transform(expr));
+    return NULL_VALUE;
   }
 
   value_t option_remove(xml::xpath_t::scope_t * locals) {
     transforms.push_back(new remove_transform(locals->args[0].as_string()));
+    return NULL_VALUE;
   }
 
   value_t option_accounts(xml::xpath_t::scope_t * locals) {
     transforms.push_back(new accounts_transform);
+    return NULL_VALUE;
   }
   value_t option_compact(xml::xpath_t::scope_t * locals) {
     transforms.push_back(new compact_transform);
+    return NULL_VALUE;
   }
   value_t option_clean(xml::xpath_t::scope_t * locals) {
     transforms.push_back(new clean_transform);
+    return NULL_VALUE;
   }
   value_t option_entries(xml::xpath_t::scope_t * locals) {
     transforms.push_back(new entries_transform);
+    return NULL_VALUE;
   }
 
   value_t option_split(xml::xpath_t::scope_t * locals) {
     transforms.push_back(new split_transform);
+    return NULL_VALUE;
   }
   value_t option_merge(xml::xpath_t::scope_t * locals) {
     transforms.push_back(new merge_transform);
+    return NULL_VALUE;
   }
 #endif
 

src/session.h

@@ -188,15 +188,22 @@ class session_t : public xml::xpath_t::scope_t
   // Debug options
   //
 
-  value_t option_trace_(xml::xpath_t::scope_t * locals) {}
-  value_t option_debug_(xml::xpath_t::scope_t * locals) {}
+  value_t option_trace_(xml::xpath_t::scope_t * locals) {
+    return NULL_VALUE;
+  }
+  value_t option_debug_(xml::xpath_t::scope_t * locals) {
+    return NULL_VALUE;
+  }
 
-  value_t option_verify(xml::xpath_t::scope_t *) {}
+  value_t option_verify(xml::xpath_t::scope_t *) {
+    return NULL_VALUE;
+  }
   value_t option_verbose(xml::xpath_t::scope_t *) {
 #if defined(LOGGING_ON)
     if (_log_level < LOG_INFO)
       _log_level = LOG_INFO;
 #endif
+    return NULL_VALUE;
   }
 
   //
@@ -206,15 +213,18 @@ class session_t : public xml::xpath_t::scope_t
   value_t option_file_(xml::xpath_t::scope_t * locals) {
     assert(locals->args.size() == 1);
     data_file = locals->args[0].as_string();
+    return NULL_VALUE;
   }
 
 #if 0
 #if defined(USE_BOOST_PYTHON)
   value_t option_import_(xml::xpath_t::scope_t * locals) {
     python_import(optarg);
+    return NULL_VALUE;
   }
   value_t option_import_stdin(xml::xpath_t::scope_t * locals) {
     python_eval(std::cin, PY_EVAL_MULTI);
+    return NULL_VALUE;
   }
 #endif
 #endif

src/value.h

@@ -561,6 +561,8 @@ std::ostream& operator<<(std::ostream& out, const value_t& val);
 
 DECLARE_EXCEPTION(value_error);
 
+#define NULL_VALUE (value_t())
+
 } // namespace ledger
 
 #endif // _VALUE_H

src/xpath.cc

@@ -1723,7 +1723,6 @@ bool xpath_t::op_t::print(std::ostream&	  out,
 			  unsigned long * start_pos,
 			  unsigned long * end_pos) const
 {
-  int arg_index = 0;
   bool found = false;
 
   if (start_pos && this == op_to_find) {
@@ -1737,6 +1736,9 @@ bool xpath_t::op_t::print(std::ostream&	  out,
   case VALUE: {
     const value_t& value(as_value());
     switch (value.type()) {
+    case value_t::VOID:
+      out << "<VOID>";
+      break;
     case value_t::BOOLEAN:
       if (value)
 	out << "1";
@@ -2235,6 +2237,10 @@ void xpath_t::path_t::walk_elements(node_t&			  start,
 	check_element(*node, element, scope, index++, size, func);
       break;
     }
+
+    default:
+      assert(false);
+      break;
     }
   }
   else if (start.is_parent_node()) {