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58548b9d68
In the future, this will result in a compilation failure if the macros are unexpectedly undefined (due to header inclusion ordering or header inclusion missing altogether). Assembler sources are more difficult to convert. In many cases, they are hand-optimized for the mangling and no-mangling variants, which is why they are not converted. sysdeps/s390/s390-32/__longjmp.c and sysdeps/s390/s390-64/__longjmp.c are special: These are C sources, but most of the implementation is in assembler, so the PTR_DEMANGLE macro has to be undefined in some cases, to match the assembler style. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <assert.h>
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#include <stdlib.h>
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#include "exit.h"
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#include <pointer_guard.h>
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/* Register a function to be called by exit. */
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int
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__on_exit (void (*func) (int status, void *arg), void *arg)
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{
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struct exit_function *new;
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/* As a QoI issue we detect NULL early with an assertion instead
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of a SIGSEGV at program exit when the handler is run (bug 20544). */
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assert (func != NULL);
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__libc_lock_lock (__exit_funcs_lock);
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new = __new_exitfn (&__exit_funcs);
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if (new == NULL)
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{
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__libc_lock_unlock (__exit_funcs_lock);
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return -1;
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}
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PTR_MANGLE (func);
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new->func.on.fn = func;
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new->func.on.arg = arg;
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new->flavor = ef_on;
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__libc_lock_unlock (__exit_funcs_lock);
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return 0;
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}
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weak_alias (__on_exit, on_exit)
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