Passing 'const char *' to parameter of type 'char *' discards qualifiers

Question

I am getting warning:

miniunz.c:342:25: Passing 'const char *' to parameter of type 'char *' discards qualifiers

in miniunz.c file of the Zip Archive library. Specifically:

const char* write_filename;
fopen(write_filename,"wb"); //// This work fine...........
makedir(write_filename);    //// This line shows warning....

How should this warning be removed so that both work fine?

Answer 1

As in the miniunz.c file from Zip Code.

The function definition is as follows:

int makedir (newdir)
    char *newdir; 

So by considering that, There are two ways to do this.

  char* write_filename;

              fopen((char*)write_filename,"wb");
                 makedir(write_filename);

OR

  const char* write_filename;

              fopen(write_filename,"wb");
                 makedir((char*)write_filename);

Or Check your makedir() function.

Hope this will help you.