diff --git a/src/conv.c b/src/conv.c
index 768319f..c8c8c08 100644
--- a/src/conv.c
+++ b/src/conv.c
@@ -204,5 +204,7 @@ void conv_fft(const conv_object obj,fft_type *inp1,fft_type *inp2,fft_type *oup)
 
 
 void free_conv(conv_object object) {
+	free_real_fft(object->fobj);
+	free_real_fft(object->iobj);
 	free(object);
 }
diff --git a/src/real.c b/src/real.c
index c37dbc7..c990f19 100644
--- a/src/real.c
+++ b/src/real.c
@@ -106,6 +106,7 @@ void fft_c2r_exec(fft_real_object obj,fft_data *inp,fft_type *oup) {
 }
 
 void free_real_fft(fft_real_object object) {
+	free_fft(object->cobj);
 	free(object);
 }
 
diff --git a/src/wavefilt.c b/src/wavefilt.c
index d8fe144..d095bb0 100644
--- a/src/wavefilt.c
+++ b/src/wavefilt.c
@@ -3038,7 +3038,7 @@ int filtlength(const char* name) {
 	}
     else if (len > 2 && strstr(name, "db") != NULL)
     {
-        new_str = malloc(sizeof(char)*(len-2 + 1));
+        new_str = (char*)malloc(sizeof(char)*(len-2 + 1));
         for (i = 2; i < len + 1; i++)
             new_str[i - 2] = name[i];
 
@@ -3158,7 +3158,7 @@ int filtlength(const char* name) {
     }
     else if (len > 4 && strstr(name, "coif") != NULL)
     {
-        new_str = malloc(sizeof(char)*(len - 4 + 1));
+        new_str = (char*)malloc(sizeof(char)*(len - 4 + 1));
         for (i = 4; i < len + 1; i++)
             new_str[i - 4] = name[i];
 
@@ -3174,7 +3174,7 @@ int filtlength(const char* name) {
     }
     else if (len > 3 && strstr(name, "sym") != NULL)
     {
-        new_str = malloc(sizeof(char)*(len - 3 + 1));
+        new_str = (char*)malloc(sizeof(char)*(len - 3 + 1));
         for (i = 3; i < len + 1; i++)
             new_str[i - 3] = name[i];
 
@@ -3206,7 +3206,7 @@ void qmf_wrev(const double *in, int N, double *out)
 {
     int count = 0;
     double *sigOutTemp;
-    sigOutTemp = malloc(N*sizeof(double));
+    sigOutTemp = (double*)malloc(N*sizeof(double));
 
     qmf_even(in, N, sigOutTemp);
     copy_reverse(sigOutTemp, N, out);
@@ -3764,7 +3764,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
 	else if (!strcmp(name,"coif1")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif1, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3781,7 +3781,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
 	}
 	else if (!strcmp(name,"coif2")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif2, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3798,7 +3798,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
 	}
 	else if (!strcmp(name,"coif3")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif3, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3815,7 +3815,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
 	}
 	else if (!strcmp(name,"coif4")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif4, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3832,7 +3832,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
 	}
 	else if (!strcmp(name,"coif5")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif5, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3849,7 +3849,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
 	}
     else if (!strcmp(name, "coif6")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif6, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3866,7 +3866,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif7")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif7, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3883,7 +3883,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif8")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif8, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3900,7 +3900,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif9")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif9, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3917,7 +3917,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif10")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif10, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3934,7 +3934,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif11")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif11, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3951,7 +3951,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif12")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif12, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3968,7 +3968,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif13")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif13, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -3985,7 +3985,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif14")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif14, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -4002,7 +4002,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif15")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif15, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -4019,7 +4019,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif16")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif16, N, coeffTemp);
         for (i = 0; i < N; ++i) {
@@ -4036,7 +4036,7 @@ int filtcoef(const char* name, double *lp1, double *hp1, double *lp2, double *hp
     }
     else if (!strcmp(name, "coif17")){
         double *coeffTemp;
-        coeffTemp = malloc(N*sizeof(double));
+        coeffTemp = (double*)malloc(N*sizeof(double));
 
         copy(coif17, N, coeffTemp);
         for (i = 0; i < N; ++i) {
diff --git a/unitTests/wavelibBoostTests/tst_dwt.cpp b/unitTests/wavelibBoostTests/tst_dwt.cpp
index 7c650b3..b395404 100644
--- a/unitTests/wavelibBoostTests/tst_dwt.cpp
+++ b/unitTests/wavelibBoostTests/tst_dwt.cpp
@@ -5,12 +5,25 @@
 #include "BoostTest.h"
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
-#include <math.h>
+
+#include <sstream>
+#include <string>
+#include <cmath>
+#include <iostream>
 #include "../../src/wavelib.h"
 #include<vector>
 
 
+namespace patch
+{
+    template < typename T > std::string to_string( const T& n )
+    {
+        std::ostringstream stm ;
+        stm << n ;
+        return stm.str() ;
+    }
+}
+
 double absmax(double *array, int N) {
 	double max;
 	int i;
@@ -125,15 +138,15 @@ BOOST_AUTO_TEST_CASE(ReconstructionTest)
 
     for (unsigned int j = 0; j < 36; j++)
     {
-        waveletNames.push_back(std::string("db") + std::to_string(j + 1));
+        waveletNames.push_back(std::string("db") + patch::to_string(j + 1));
     }
     for (unsigned int j = 0; j < 17; j++)
     {
-        waveletNames.push_back(std::string("coif") + std::to_string(j + 1));
+        waveletNames.push_back(std::string("coif") + patch::to_string(j + 1));
     }
     for (unsigned int j = 1; j < 20; j++)
     {
-        waveletNames.push_back(std::string("sym") + std::to_string(j + 1));
+        waveletNames.push_back(std::string("sym") + patch::to_string(j + 1));
     }
     
     waveletNames.push_back("bior1.1");
@@ -206,14 +219,18 @@ BOOST_AUTO_TEST_CASE(ReconstructionTest)
                     wt_free(wt);
                 }
                 wave_free(obj);
+                delete[] name;
             }
         }
     }
-
+    
+	fclose(ifp);
 	free(out);
     free(inp);
 }
 
+
+
 BOOST_AUTO_TEST_CASE(DBCoefTests)
 {
     wave_object obj;
@@ -222,7 +239,7 @@ BOOST_AUTO_TEST_CASE(DBCoefTests)
     waveletNames.resize(38);
     for (unsigned int i = 0; i < waveletNames.size();i++)
     {
-        waveletNames[i] = std::string("db") + std::to_string(i+1);
+        waveletNames[i] = std::string("db") + patch::to_string(i+1);
     }
 
     for (unsigned int j = 0; j < waveletNames.size(); j++)
@@ -237,6 +254,7 @@ BOOST_AUTO_TEST_CASE(DBCoefTests)
         for (int m = 1; m < (obj->lpr_len / 2) - 1;m++)
             BOOST_CHECK_SMALL(sum5(obj->lpr, obj->lpr_len, m), epsilon);
         wave_free(obj);
+        delete[] name;
     }
 }
 
@@ -249,7 +267,7 @@ BOOST_AUTO_TEST_CASE(CoifCoefTests)
     waveletNames.resize(17);
     for (unsigned int i = 0; i < waveletNames.size(); i++)
     {
-        waveletNames[i] = std::string("coif") + std::to_string(i + 1);
+        waveletNames[i] = std::string("coif") + patch::to_string(i + 1);
     }
 
     for (unsigned int j = 0; j < waveletNames.size(); j++)
@@ -264,6 +282,7 @@ BOOST_AUTO_TEST_CASE(CoifCoefTests)
         for (int m = 1; m < (obj->lpr_len / 2) - 1; m++)
             BOOST_CHECK_SMALL(sum5(obj->lpr, obj->lpr_len, m), epsilon);
         wave_free(obj);
+        delete[] name;
     }
 }
 
@@ -274,7 +293,7 @@ BOOST_AUTO_TEST_CASE(SymCoefTests)
     std::vector<std::string > waveletNames;
     for (unsigned int i = 1; i < 20; i++)
     {
-        waveletNames.push_back(std::string("sym") + std::to_string(i + 1));
+        waveletNames.push_back(std::string("sym") + patch::to_string(i + 1));
     }
 
     for (unsigned int j = 0; j < waveletNames.size(); j++)
@@ -289,6 +308,7 @@ BOOST_AUTO_TEST_CASE(SymCoefTests)
         for (int m = 1; m < (obj->lpr_len / 2) - 1; m++)
             BOOST_CHECK_SMALL(sum5(obj->lpr, obj->lpr_len, m), epsilon);
         wave_free(obj);
+        delete[] name;
     }
 }
 
@@ -326,9 +346,10 @@ BOOST_AUTO_TEST_CASE(BiorCoefTests)
         BOOST_CHECK_SMALL(sum3(obj->lpr, obj->lpr_len) - 1. / std::sqrt(2.0), epsilon);
         BOOST_CHECK_SMALL(sum3(obj->lpd, obj->lpd_len) - 1. / std::sqrt(2.0), epsilon);
         wave_free(obj);
+        delete[] name;
     }
 }
-
+*/
 BOOST_AUTO_TEST_CASE(RBiorCoefTests)
 {
     wave_object obj;
@@ -363,6 +384,7 @@ BOOST_AUTO_TEST_CASE(RBiorCoefTests)
         BOOST_CHECK_SMALL(sum3(obj->lpr, obj->lpr_len) - 1. / std::sqrt(2.0), epsilon);
         BOOST_CHECK_SMALL(sum3(obj->lpd, obj->lpd_len) - 1. / std::sqrt(2.0), epsilon);
         wave_free(obj);
+        delete[] name;
     }
 }