diff options
Diffstat (limited to 'malloc/malloc-guard.c')
| -rw-r--r-- | malloc/malloc-guard.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/malloc/malloc-guard.c b/malloc/malloc-guard.c new file mode 100644 index 0000000000..c8b35818ad --- /dev/null +++ b/malloc/malloc-guard.c @@ -0,0 +1,29 @@ +/* Heap protector variables. + Copyright (C) 2016 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; see the file COPYING.LIB. If + not, see <http://www.gnu.org/licenses/>. */ + +/* These variables are defined in a separate file because the static + startup code initializes them, but this should not pull the rest of + the libc malloc implementation into the link. */ + +#include <malloc-internal.h> + +/* The heap cookie. The lowest three bits (corresponding to + SIZE_BITS) in __malloc_guard_header must be clear. Initialized + during libc startup, and computed by elf/dl-keysetup.c. */ +INTERNAL_SIZE_T __malloc_header_guard; /* For size. */ +INTERNAL_SIZE_T __malloc_footer_guard; /* For prev_size. */ |