fix some compiler warnings

src/CFGraph/private_variables_analysis.cpp

@@ -321,12 +321,6 @@ static set<SAPFOR::BasicBlock*> analyzeLoop(LoopGraph* loop, const set<SAPFOR::B
         }
     }
 
-    if (currentLoop.empty()) // can't find loop IR - loop unreachable!
-    {
-        __spf_print(1, "Unreachable loop on %s:%d\n", current_file->filename(), loop_operator->lineNumber());
-        return currentLoop;
-    }
-
     if (!head_block)
         printInternalError(convertFileName(__FILE__).c_str(), __LINE__);
     

src/Utils/module_utils.cpp

@@ -325,7 +325,7 @@ static void getModuleSymbols(SgStatement* func, set<SgSymbol*>& symbs)
     }
 }
 
-const set<SgSymbol*>& getModuleSymbols(SgStatement *func)
+set<SgSymbol*> getModuleSymbols(SgStatement *func)
 {
     auto it = symbolsForFunc.find(func->symbol()->identifier());
     if (it != symbolsForFunc.end())
@@ -345,7 +345,7 @@ const set<SgSymbol*>& getModuleSymbols(SgStatement *func)
     }
 
     symbolsForFunc[func->symbol()->identifier()] = symbs;
-    return symbolsForFunc[func->symbol()->identifier()];
+    return symbs;
 }
 
 static void findSymbol(SgStatement* func, const string& varName, const string& locName,

src/Utils/module_utils.h

@@ -1,7 +1,7 @@
 #pragma once
 
 std::string correctSymbolModuleName(const std::string& origFull);
-const std::set<SgSymbol*>& getModuleSymbols(SgStatement* func);
+std::set<SgSymbol*> getModuleSymbols(SgStatement* func);
 void getModulesAndFunctions(SgFile* file, std::vector<SgStatement*>& modulesAndFunctions);
 void findModulesInFile(SgFile* file, std::vector<SgStatement*>& modules);
 std::map<std::string, std::set<std::string>> createMapOfModuleUses(SgFile* file);