c - Memory leak with valgrind, where can I free my pointer

Question

in this portion I have a memory leak of 5 blocks which seems to match my loop turns so I tried adding free(newcw); in the while loop but I get a segmentation fault 11 error (but a clean valgrind), I don't understand why.

while(...){
      cword *newcw = malloc(sizeof *newcw);
      if (newcw == NULL) {
        fprintf(stderr, "*** Error: Not enough memory.
");
        ...
        return EXIT_FAILURE;
      }
      newcw->nbocc = 1;
      newcw->iscommon = 0;
      if (hashtable_add(ht, s, newcw) == NULL) {
        ...
        return EXIT_FAILURE;
      }
      /*-----free(newcw);-----*/
}

cword is a structure with two members nbocc and iscommon. Without the free instruction it works (with a memory leak), so I don't know where can I free the cword structure pointer newcw

Answer 1

等待大神答复