[Bug binutils/22967] nm should distinguish in between local and global ifunc

[mliska at suse dot cz]

https://sourceware.org/bugzilla/show_bug.cgi?id=22967

--- Comment #2 from Martin Liska <mliska at suse dot cz> ---
(In reply to Nick Clifton from comment #1)
> Hi Martin,
> 
> > nm uses 'i' letter for GNU IFUNC symbols and it would be good to use
> > different letters for local and global ones. Similar what's done with 't'
> > and 'T'
> 
> Would you mind uploading an object file/executable containing both types
> of ifunc ?  Then I can see about fixing nm.  (Yes, I could create one myself
> but I am lazy^H^H^H^H busy).
> 
> Cheers
>   Nick

Sure, there's one static (local):

$ cat /tmp/ifunc.c 
static volatile int a;
static int my_foo1 (void) { return 1; }
static int my_foo2 (void) { return 2; }
typedef int (*F) (void);
static F resolve_foo (void) { if (a) return my_foo1; else return my_foo2; }
static int foo (void) __attribute__ ((ifunc ("resolve_foo")));

int
main ()
{
  if (foo () != 2)
    __builtin_abort ();
}

Commenting static before 'int foo' you get a global one.

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