glibc/elf/tst-tls-allocation-failure-static.c
Florian Weimer ede8d94d15 csu: Implement and use _dl_early_allocate during static startup
This implements mmap fallback for a brk failure during TLS
allocation.

scripts/tls-elf-edit.py is updated to support the new patching method.
The script no longer requires that in the input object is of ET_DYN
type.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
(cherry picked from commit f787e138aa)
2022-05-19 12:13:53 +02:00

32 lines
1.2 KiB
C

/* Base for test program with impossiblyh large PT_TLS segment.
Copyright (C) 2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* The test actual binary is patched using scripts/tst-elf-edit.py
--maximize-tls-size, and this introduces the expected test
allocation failure due to an excessive PT_LS p_memsz value.
Patching the binary is required because on some 64-bit targets, TLS
relocations can only cover a 32-bit range, and glibc-internal TLS
variables such as errno end up outside that range. */
int
main (void)
{
return 0;
}