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Mark __libc_freeres_fn as used [BZ #27002]

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GCC 11 with

commit 6fbec038f7a7ddf29f074943611b53210d17c40c
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Feb 3 11:55:43 2020 -0800

    Use SHF_GNU_RETAIN to preserve symbol definitions

places used symbols in SECTION_RETAIN sections if assembler supports it.
Mark __libc_freeres_fn as used to avoid

gconv_dl.c: In function 'free_mem':
gconv_dl.c:191:1: error: 'do_release_all' without 'used' attribute and 'free_mem' with 'used' attribute are placed in a section with the same name [-Werror=attributes]
  191 | do_release_all (void *nodep)
      | ^~~~~~~~~~~~~~
In file included from <command-line>:
gconv_dl.c:202:18: note: 'free_mem' was declared here
  202 | libc_freeres_fn (free_mem)
      |                  ^~~~~~~~
./../include/libc-symbols.h:316:15: note: in definition of macro 'libc_freeres_fn'
  316 |   static void name (void)
      |               ^~~~
cc1: all warnings being treated as errors
This commit is contained in:
H.J. Lu 2020-12-02 14:26:28 -08:00
parent bcf47eb0fb
commit 3c1fe20a9f
1 changed files with 1 additions and 1 deletions
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2
include/libc-symbols.h
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@ -307,7 +307,7 @@ for linking")
/* Resource freeing functions from libc.so go in this section. */
#define __libc_freeres_fn_section \
__attribute__ ((section ("__libc_freeres_fn")))
__attribute__ ((__used__, section ("__libc_freeres_fn")))
/* Resource freeing functions for libc.so. */
#define libc_freeres_fn(name) \