Convert public char* to const char* for C++ compatibility.

test/functional/src/test_autofilter09.c

@@ -106,7 +106,7 @@ int main() {
 
     worksheet_autofilter(worksheet, 0, 0, 50, 3);
 
-    char* list[] = {"East", "North", "South", NULL};
+    const char* list[] = {"East", "North", "South", NULL};
 
     worksheet_filter_list(worksheet, 0, list);
 

test/functional/src/test_autofilter10.c

@@ -107,7 +107,7 @@ int main() {
 
     worksheet_autofilter(worksheet, 0, 0, 50, 3);
 
-    char* list[] = {"East", "North", "South", "Blanks", NULL};
+    const char* list[] = {"East", "North", "South", "Blanks", NULL};
 
     worksheet_filter_list(worksheet, 0, list);
 

test/functional/src/test_autofilter11.c

@@ -108,7 +108,7 @@ int main() {
     worksheet_autofilter(worksheet, 0, 0, 50, 3);
 
 
-    char* list[] = {"3000", "5000", "8000", NULL};
+    const char* list[] = {"3000", "5000", "8000", NULL};
 
     worksheet_filter_list(worksheet, 2, list);
 

test/functional/src/test_data_validation01.c

@@ -13,7 +13,7 @@ int main() {
 
     lxw_workbook  *workbook  = workbook_new("test_data_validation01.xlsx");
     lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
-    char *list[] = {"Foo", "Bar", "Baz", NULL};
+    const char* list[] = {"Foo", "Bar", "Baz", NULL};
 
     lxw_data_validation *data_validation = calloc(1, sizeof(lxw_data_validation));
     data_validation->validate = LXW_VALIDATION_TYPE_LIST;

test/functional/src/test_data_validation02.c

@@ -13,7 +13,7 @@ int main() {
 
     lxw_workbook  *workbook  = workbook_new("test_data_validation02.xlsx");
     lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
-    char *list[] = {"Foo", "Bar", "Baz", NULL};
+    const char* list[] = {"Foo", "Bar", "Baz", NULL};
 
     lxw_data_validation *data_validation = calloc(1, sizeof(lxw_data_validation));
     data_validation->validate = LXW_VALIDATION_TYPE_LIST;

test/functional/src/test_data_validation03.c

@@ -13,8 +13,8 @@ int main() {
 
     lxw_workbook  *workbook  = workbook_new("test_data_validation03.xlsx");
     lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
-    char *list1[] = {"Foo", "Bar", "Baz", NULL};
-    char *list2[] = {
+    const char *list1[] = {"Foo", "Bar", "Baz", NULL};
+    const char *list2[] = {
         "Foobar", "Foobas", "Foobat", "Foobau", "Foobav", "Foobaw", "Foobax",
         "Foobay", "Foobaz", "Foobba", "Foobbb", "Foobbc", "Foobbd", "Foobbe",
         "Foobbf", "Foobbg", "Foobbh", "Foobbi", "Foobbj", "Foobbk", "Foobbl",

test/functional/src/test_data_validation04.c

@@ -13,8 +13,8 @@ int main() {
 
     lxw_workbook  *workbook  = workbook_new("test_data_validation04.xlsx");
     lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
-    char *list1[] = {"Foo", "Bar", "Baz", NULL};
-    char *list2[] = {
+    const char *list1[] = {"Foo", "Bar", "Baz", NULL};
+    const char *list2[] = {
         "Foobar", "Foobas", "Foobat", "Foobau", "Foobav", "Foobaw", "Foobax",
         "Foobay", "Foobaz", "Foobba", "Foobbb", "Foobbc", "Foobbd", "Foobbe",
         "Foobbf", "Foobbg", "Foobbh", "Foobbi", "Foobbj", "Foobbk", "Foobbl",

test/functional/src/test_data_validation05.c

@@ -13,8 +13,8 @@ int main() {
 
     lxw_workbook  *workbook  = workbook_new("test_data_validation05.xlsx");
     lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
-    char *list1[] = {"Foo", "Bar", "Baz", NULL};
-    char *list2[] = {
+    const char *list1[] = {"Foo", "Bar", "Baz", NULL};
+    const char *list2[] = {
         "Foobar", "Foobas", "Foobat", "Foobau", "Foobav", "Foobaw", "Foobax",
         "Foobay", "Foobaz", "Foobba", "Foobbb", "Foobbc", "Foobbd", "Foobbe",
         "Foobbf", "Foobbg", "Foobbh", "Foobbi", "Foobbj", "Foobbk", "Foobbl",

test/functional/src/test_data_validation06.c

@@ -13,8 +13,8 @@ int main() {
 
     lxw_workbook  *workbook  = workbook_new("test_data_validation06.xlsx");
     lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
-    char *list1[] = {"Foo", "Bar", "Baz", NULL};
-    char *list2[] = {
+    const char *list1[] = {"Foo", "Bar", "Baz", NULL};
+    const char *list2[] = {
         "Foobar", "Foobas", "Foobat", "Foobau", "Foobav", "Foobaw", "Foobax",
         "Foobay", "Foobaz", "Foobba", "Foobbb", "Foobbc", "Foobbd", "Foobbe",
         "Foobbf", "Foobbg", "Foobbh", "Foobbi", "Foobbj", "Foobbk", "Foobbl",

test/functional/src/test_data_validation07.c

@@ -13,7 +13,7 @@ int main() {
 
     lxw_workbook  *workbook  = workbook_new("test_data_validation07.xlsx");
     lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
-    char *list[] = {"coffee", "café", NULL};
+    const char* list[] = {"coffee", "café", NULL};
 
     lxw_data_validation *data_validation = calloc(1, sizeof(lxw_data_validation));
     data_validation->validate = LXW_VALIDATION_TYPE_LIST;

test/functional/src/test_output_buffer01.c

@@ -10,7 +10,7 @@
 #include "xlsxwriter.h"
 
 int main() {
-    char *output_buffer;
+    const char *output_buffer;
     size_t output_buffer_size;
     lxw_workbook_options options = {LXW_FALSE,
                                     ".",
@@ -31,7 +31,7 @@ int main() {
     FILE *file = fopen("test_output_buffer01.xlsx", "wb");
     fwrite(output_buffer, output_buffer_size, 1, file);
     fclose(file);
-    free(output_buffer);
+    free((void *)output_buffer);
 
     return 0;
 }

test/functional/src/test_properties01.c

@@ -33,15 +33,15 @@ int main() {
     worksheet_set_column(worksheet, 0, 0, 70, NULL);
     worksheet_write_string(worksheet, CELL("A1"), "Select 'Office Button -> Prepare -> Properties' to see the file properties." , NULL);
 
-    free(properties->title);
-    free(properties->subject);
-    free(properties->author);
-    free(properties->manager);
-    free(properties->company);
-    free(properties->category);
-    free(properties->keywords);
-    free(properties->comments);
-    free(properties->status);
+    free((void *)properties->title);
+    free((void *)properties->subject);
+    free((void *)properties->author);
+    free((void *)properties->manager);
+    free((void *)properties->company);
+    free((void *)properties->category);
+    free((void *)properties->keywords);
+    free((void *)properties->comments);
+    free((void *)properties->status);
     free(properties);
 
     return workbook_close(workbook);

test/functional/src/test_properties02.c

@@ -21,7 +21,7 @@ int main() {
 
     (void)worksheet;
 
-    free(properties->hyperlink_base);
+    free((void *)properties->hyperlink_base);
     free(properties);
 
     return workbook_close(workbook);

test/unit/worksheet/test_worksheet_write_auto_filter.c

@@ -458,7 +458,7 @@ CTEST(worksheet, write_write_auto_filter19) {
 
     worksheet_autofilter(worksheet, 0, 0, 50, 3);
 
-    char* list[] = {"East", NULL};
+    const char* list[] = {"East", NULL};
 
     worksheet_filter_list(worksheet, 0, list);
 
@@ -481,7 +481,7 @@ CTEST(worksheet, write_write_auto_filter20) {
 
     worksheet_autofilter(worksheet, 0, 0, 50, 3);
 
-    char* list[] = {"East", "North", NULL};
+    const char* list[] = {"East", "North", NULL};
 
     worksheet_filter_list(worksheet, 0, list);
 
@@ -504,7 +504,7 @@ CTEST(worksheet, write_write_auto_filter21) {
 
     worksheet_autofilter(worksheet, 0, 0, 50, 3);
 
-    char* list[] = {"February", "January", "July", "June", NULL};
+    const char* list[] = {"February", "January", "July", "June", NULL};
 
     worksheet_filter_list(worksheet, 3, list);
 

test/unit/worksheet/test_worksheet_write_data_validation1.c

@@ -128,7 +128,7 @@ CTEST(worksheet, write_data_validations04) {
     char* got;
     char exp[] = "<dataValidations count=\"1\"><dataValidation type=\"list\" allowBlank=\"1\" showInputMessage=\"1\" showErrorMessage=\"1\" sqref=\"A4\"><formula1>\"open,high,close\"</formula1></dataValidation></dataValidations>";
     FILE* testfile = lxw_tmpfile(NULL);
-    char *list[] = {"open", "high", "close", NULL};
+    const char* list[] = {"open", "high", "close", NULL};
 
     lxw_data_validation *data_validation = calloc(1, sizeof(lxw_data_validation));
     data_validation->validate = LXW_VALIDATION_TYPE_LIST;

test/unit/worksheet/test_worksheet_write_data_validation2.c

@@ -486,7 +486,7 @@ CTEST(worksheet, test_write_data_validations_220) {
     char* got;
     char exp[] = "<dataValidations count=\"1\"><dataValidation type=\"list\" allowBlank=\"1\" showInputMessage=\"1\" showErrorMessage=\"1\" sqref=\"B5\"><formula1>\"a,bb,ccc\"</formula1></dataValidation></dataValidations>";
     FILE* testfile = lxw_tmpfile(NULL);
-    char *list[] = {"a", "bb", "ccc", NULL};
+    const char* list[] = {"a", "bb", "ccc", NULL};
 
     lxw_data_validation *data_validation = calloc(1, sizeof(lxw_data_validation));
     data_validation->validate = LXW_VALIDATION_TYPE_LIST;
@@ -509,7 +509,7 @@ CTEST(worksheet, test_write_data_validations_221) {
     char* got;
     char exp[] = "<dataValidations count=\"1\"><dataValidation type=\"list\" allowBlank=\"1\" showDropDown=\"1\" showInputMessage=\"1\" showErrorMessage=\"1\" sqref=\"B5\"><formula1>\"a,bb,ccc\"</formula1></dataValidation></dataValidations>";
     FILE* testfile = lxw_tmpfile(NULL);
-    char *list[] = {"a", "bb", "ccc", NULL};
+    const char* list[] = {"a", "bb", "ccc", NULL};
 
     lxw_data_validation *data_validation = calloc(1, sizeof(lxw_data_validation));
     data_validation->validate = LXW_VALIDATION_TYPE_LIST;