elf: Fix _dl_close_worker compile error with -Werror and -DNDEBUG
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Commit Message
here is the error:
dl-close.c: In function ‘_dl_close_worker’:
dl-close.c:140:22: error: unused variable ‘nloaded’ [-Werror=unused-variable]
140 | const unsigned int nloaded = ns->_ns_nloaded;
---
elf/dl-close.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Comments
On 15/09/23 04:21, Qingqing Li wrote:
> here is the error:
> dl-close.c: In function ‘_dl_close_worker’:
> dl-close.c:140:22: error: unused variable ‘nloaded’ [-Werror=unused-variable]
> 140 | const unsigned int nloaded = ns->_ns_nloaded;
Please add that this failure happens with -DNDEBUG on commit message
and also reference the bug 18755 on title (it is closed, but it is
good to track the build failures with -DNDEBUG).
> ---
> elf/dl-close.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/elf/dl-close.c b/elf/dl-close.c
> index c9a7d06577..a0bddb583d 100644
> --- a/elf/dl-close.c
> +++ b/elf/dl-close.c
> @@ -137,7 +137,7 @@ _dl_close_worker (struct link_map *map, bool force)
> dl_close_state = pending;
>
> bool any_tls = false;
> - const unsigned int nloaded = ns->_ns_nloaded;
> + __attribute__ ((unused)) const unsigned int nloaded = ns->_ns_nloaded;
We already have __attribute_maybe_unused__ and usually attribute are
added after variable definition:
const unsigned int nloaded __attribute_maybe_unused__ = ns->_ns_nloaded;
>
> /* Run over the list and assign indexes to the link maps. */
> int idx = 0;
@@ -137,7 +137,7 @@ _dl_close_worker (struct link_map *map, bool force)
dl_close_state = pending;
bool any_tls = false;
- const unsigned int nloaded = ns->_ns_nloaded;
+ __attribute__ ((unused)) const unsigned int nloaded = ns->_ns_nloaded;
/* Run over the list and assign indexes to the link maps. */
int idx = 0;