glibc/assert/Makefile
Florian Weimer 9001cb1102 assert: Do not use stderr in libc-internal assert
Redirect internal assertion failures to __libc_assert_fail, based on
based on __libc_message, which writes directly to STDERR_FILENO
and calls abort.  Also disable message translation and reword the
error message slightly (adjusting stdlib/tst-bz20544 accordingly).

As a result of these changes, malloc no longer needs its own
redefinition of __assert_fail.

__libc_assert_fail needs to be stubbed out during rtld dependency
analysis because the rtld rebuilds turn __libc_assert_fail into
__assert_fail, which is unconditionally provided by elf/dl-minimal.c.

This change is not possible for the public assert macro and its
__assert_fail function because POSIX requires that the diagnostic
is written to stderr.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2022-08-03 11:43:04 +02:00

45 lines
1.3 KiB
Makefile

# Copyright (C) 1991-2022 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/>.
#
# Sub-makefile for assert portion of the library.
#
subdir := assert
include ../Makeconfig
headers := assert.h
routines := \
__assert \
__libc_assert_fail \
assert \
assert-perr \
# routines
tests := test-assert test-assert-perr tst-assert-c++ tst-assert-g++
ifeq ($(have-cxx-thread_local),yes)
CFLAGS-tst-assert-c++.o = -std=c++11
LDLIBS-tst-assert-c++ = -lstdc++
CFLAGS-tst-assert-g++.o = -std=gnu++11
LDLIBS-tst-assert-g++ = -lstdc++
else
tests-unsupported += tst-assert-c++ tst-assert-g++
endif
include ../Rules