Re: nlsit(3) fix for non-global variables

Makes sense.

Mark Kettenis <[email protected]> wrote:

> I noticed I couldn't use pstat to print the value of a static variable
> in the kernel.  After some debugging I found that the nlist(3) lookup
> of the variable has only the N_EXT bit set in n_type.  That makes no
> sense, as N_EXT is supposed to mark global variables.  To add insult
> to injury, it doesn't just set to N_EXT bit, it actually overwrites
> the type.
> 
> Diff below fixes this and matches what NetBSD does.
> 
> ok?
> 
> 
> Index: lib/libc/gen/nlist.c
> ===================================================================
> RCS file: /cvs/src/lib/libc/gen/nlist.c,v
> retrieving revision 1.72
> diff -u -p -r1.72 nlist.c
> --- lib/libc/gen/nlist.c	27 Dec 2022 17:10:06 -0000	1.72
> +++ lib/libc/gen/nlist.c	23 Jun 2026 15:05:28 -0000
> @@ -270,8 +270,8 @@ __fdnlist(int fd, struct nlist *list)
>  					p->n_type = N_FN;
>  					break;
>  				}
> -				if (ELF_ST_BIND(s->st_info) == STB_LOCAL)
> -					p->n_type = N_EXT;
> +				if (ELF_ST_BIND(s->st_info) != STB_LOCAL)
> +					p->n_type |= N_EXT;
>  				p->n_desc = 0;
>  				p->n_other = 0;
>  				if (--nent <= 0)
>