[Bug target/98146] [11 Regression] section type conflict when "used" attribute is applied to decl with specific section
cvs-commit at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Dec 16 13:43:54 GMT 2020
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98146
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:
https://gcc.gnu.org/g:151d1347c99acfcf0f5bcd8caac36dcc7353816d
commit r11-6142-g151d1347c99acfcf0f5bcd8caac36dcc7353816d
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 20:10:13 2020 -0800
Require .init_array/.fini_array support for SHF_GNU_RETAIN
Since SHF_GNU_RETAIN support doesn't work for crtstuff.c which switches
the output section directly with asm statement:
---
static void __attribute__((used))
__do_global_dtors_aux (void)
{
static _Bool completed;
if (__builtin_expect (completed, 0))
return;
completed = 1;
}
static void __attribute__((__used__))
call___do_global_dtors_aux (void)
{
asm ("\t.section\t.fini");
__do_global_dtors_aux ();
asm ("\t.section\t.text");
}
---
use SHF_GNU_RETAIN only if .init_array/.fini_array section is supported.
gcc/
PR target/98146
* defaults.h (SUPPORTS_SHF_GNU_RETAIN): New.
* varasm.c (get_section): Replace HAVE_GAS_SHF_GNU_RETAIN with
SUPPORTS_SHF_GNU_RETAIN.
(resolve_unique_section): Likewise.
(get_variable_section): Likewise.
(switch_to_section): Likewise.
gcc/testsuite/
PR target/98146
* lib/target-supports.exp
(check_effective_target_R_flag_in_section): Also check
HAVE_INITFINI_ARRAY_SUPPORT != 0.
More information about the Gcc-bugs
mailing list