https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77696
--- Comment #14 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Another example from Martin:
extern char buf[80];
extern char tmpdir[80];
extern char fname[8];
void f (int num)
{
sprintf (buf, "/%s/%s-%i.tmp", tmpdir, fname, num);
}
In the most basic case (nothing beyond what's in the above is
known) GCC currently prints the rather mystifying:
warning: ‘/’ directive writing 1 byte into a region of size between 0
and 79 [-Wformat-overflow=]
7 | __builtin_sprintf (buf, "/%s/%s-%i.tmp", tmpdir, fname, num);
| ^
We need to make this more "actionable" for the end-user.
