On AIX, when both the `__VEC__` and `_ALL_SOURCE` macros are defined
(they are defined by default), the malloc and calloc system calls are
mapped to vec_malloc and vec_calloc respectively, so we need the
following vec_malloc and vec_calloc interceptors.
Issue: #138916
Adjust asan interceptor compatbility for AIX. AIX uses dlsym to retrieve
addresses of exported functions. However, some functions in libc.a, such
as memcpy, are not exported, so we currently have a limitation in
retrieving these addresses.
Issue: https://github.com/llvm/llvm-project/issues/138916
Do some refactoring to allocation/deallocation interceptors. Expose
explicit per-alloc_type functions and stop accepting explicit AllocType.
This ensures we do not accidentally mix.
NOTE: This change rejects attempts to call `operator new(<some_size>,
static_cast<std::align_val_t>(0))`.
For https://github.com/llvm/llvm-project/issues/144435
Signed-off-by: Justin King <jcking@google.com>
`DTLS_on_libc_memalign` is called from primary
allocator, so `__sanitizer_get_allocated_begin`
should also be aware of allocation,
and correctly handled by `GetDTLSRange`.
C++11 `alignas` is already used extensively. `alignas` must precede
`static`, so adjust the ordering accordingly.
msan.cpp: Clang 15 doesn't allow `__attribute__((visibility("default"))) alignas(16)`.
Use the order `alignas(16) SANITIZER_INTERFACE_ATTRIBUTE`. Tested with Clang 7.
Pull Request: https://github.com/llvm/llvm-project/pull/98958
Since glibc 2.34, dlsym does
1. malloc 1
2. malloc 2
3. free pointer from malloc 1
4. free pointer from malloc 2
These sequence was not handled by trivial dlsym hack.
This fixes https://bugs.llvm.org/show_bug.cgi?id=52278
Reviewed By: eugenis, morehouse
Differential Revision: https://reviews.llvm.org/D112588
