/* Replace operator new/new[], for GDB, the GNU debugger.
- Copyright (C) 2016 Free Software Foundation, Inc.
+ Copyright (C) 2016-2019 Free Software Foundation, Inc.
This file is part of GDB.
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>
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
QUIT gdb_exception. This is necessary because operator new
can only ever throw std::bad_alloc, or something that extends
it. */
- TRY
+ try
{
malloc_failure (sz);
}
- CATCH (ex, RETURN_MASK_ALL)
+ catch (const gdb_exception &ex)
{
- do_cleanups (all_cleanups ());
-
throw gdb_quit_bad_alloc (ex);
}
- END_CATCH
}
return p;
}
void *
-operator new (std::size_t sz, const std::nothrow_t&)
+operator new (std::size_t sz, const std::nothrow_t&) noexcept
{
/* malloc (0) is unpredictable; avoid it. */
if (sz == 0)
}
void*
-operator new[] (std::size_t sz, const std::nothrow_t&)
+operator new[] (std::size_t sz, const std::nothrow_t&) noexcept
{
return ::operator new (sz, std::nothrow);
}
+#endif