8681202dd6
This change adds a new weak API function which makes the sanitizer ignore the call to free(), and implements the functionality in ASan and HWAsan. The runtime that implements this hook can then call free() at a later point again on the same pointer (and making sure the hook returns zero so that the memory will actually be freed) when it's actually ready for the memory to be cleaned up. This is needed in order to implement an sanitizer-compatible version of Chrome's BackupRefPtr algorithm, since process-wide double-shimming of malloc/free does not work on some platforms. Requested and designed by @c01db33f (Mark) from Project Zero. --------- Co-authored-by: Mark Brand <markbrand@google.com>
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================