This patch fixed segfault when supplying multiple options like '-f' for iftop.

The fixing has been integrated into open iftop-1.0 pre-release version. We can

see the fixing log here:

--- cfgfile.c.orig 2013-12-02 00:37:09.851645000 -0800

+++ cfgfile.c 2013-12-02 00:31:53.734822000 -0800

@@ -230,8 +230,13 @@

stringmap S;

S = stringmap_find(config, directive);

- if (S) stringmap_delete_free(S);

- stringmap_insert(config, directive, item_ptr(xstrdup(s)));

+ if (S) {

+ xfree(S->d.v);

+ S->d = item_ptr(xstrdup(s));

+ }

+ else {

+ stringmap_insert(config, directive, item_ptr(xstrdup(s)));

+ }

}

int read_config(char *file, int whinge_on_error) {