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-rw-r--r--gdb/gdbsupport/new-op.c95
1 files changed, 0 insertions, 95 deletions
diff --git a/gdb/gdbsupport/new-op.c b/gdb/gdbsupport/new-op.c
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--- a/gdb/gdbsupport/new-op.c
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-/* Replace operator new/new[], for GDB, the GNU debugger.
-
- Copyright (C) 2016-2020 Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-/* GCC does not understand __has_feature. */
-#if !defined(__has_feature)
-# define __has_feature(x) 0
-#endif
-
-#if !__has_feature(address_sanitizer) && !defined(__SANITIZE_ADDRESS__)
-#include "common-defs.h"
-#include "host-defs.h"
-#include <new>
-
-/* Override operator new / operator new[], in order to internal_error
- on allocation failure and thus query the user for abort/core
- dump/continue, just like xmalloc does. We don't do this from a
- new-handler function instead (std::set_new_handler) because we want
- to catch allocation errors from within global constructors too.
-
- Skip overriding if building with -fsanitize=address though.
- Address sanitizer wants to override operator new/delete too in
- order to detect malloc+delete and new+free mismatches. Our
- versions would mask out ASan's, with the result of losing that
- useful mismatch detection.
-
- Note that C++ implementations could either have their throw
- versions call the nothrow versions (libstdc++), or the other way
- around (clang/libc++). For that reason, we replace both throw and
- nothrow variants and call malloc directly. */
-
-void *
-operator new (std::size_t sz)
-{
- /* malloc (0) is unpredictable; avoid it. */
- if (sz == 0)
- sz = 1;
-
- void *p = malloc (sz); /* ARI: malloc */
- if (p == NULL)
- {
- /* If the user decides to continue debugging, throw a
- gdb_quit_bad_alloc exception instead of a regular QUIT
- gdb_exception. The former extends both std::bad_alloc and a
- QUIT gdb_exception. This is necessary because operator new
- can only ever throw std::bad_alloc, or something that extends
- it. */
- try
- {
- malloc_failure (sz);
- }
- catch (gdb_exception &ex)
- {
- throw gdb_quit_bad_alloc (std::move (ex));
- }
- }
- return p;
-}
-
-void *
-operator new (std::size_t sz, const std::nothrow_t&) noexcept
-{
- /* malloc (0) is unpredictable; avoid it. */
- if (sz == 0)
- sz = 1;
- return malloc (sz); /* ARI: malloc */
-}
-
-void *
-operator new[] (std::size_t sz)
-{
- return ::operator new (sz);
-}
-
-void*
-operator new[] (std::size_t sz, const std::nothrow_t&) noexcept
-{
- return ::operator new (sz, std::nothrow);
-}
-#endif