Add C++17 aligned new/delete interceptors to standalone lsan

[fjricci]

Summary

Based on r282019.

[fjricci]

Also add missing interceptors for delete(ptr, size)

[alekseyshl]

lib/lsan/lsan_interceptors.cc

299

Don't we need to intercept by mangled names here too?

[fjricci]

lib/lsan/lsan_interceptors.cc

299

ASan currently does not. Shouldn't be hard to add the mangled name interception for both ASan and LSan in a second patch (unless you'd rather have it all here).

[alekseyshl]

lib/lsan/lsan_interceptors.cc

299

Why not, let's add them in this patch.

[fjricci]

lib/lsan/lsan_interceptors.cc

299

Sounds good.

[alekseyshl]

lib/lsan/lsan_interceptors.cc

207–214

Use lsan_malloc instead of lsan_memalign, one less parameter and check.

[fjricci]

lib/lsan/lsan_interceptors.cc

299

I don't think we can add these on macOS until they're added in libc++, otherwise we get undefined symbol errors.

[alekseyshl]

lib/lsan/lsan_interceptors.cc

299

OK then, let's do it later.

[fjricci]

memalign -> malloc

lib/lsan/lsan_interceptors.cc

 int pthread_key_create(unsigned *key, void (*destructor)(void* v));
 int pthread_setspecific(unsigned key, const void *v);
 }
 
 ///// Malloc/free interceptors. /////
 
 namespace std {
   struct nothrow_t;
+  enum class align_val_t: size_t;
 }
 
 #if !SANITIZER_MAC
 INTERCEPTOR(void*, malloc, uptr size) {
   ENSURE_LSAN_INITED;
   GET_STACK_TRACE_MALLOC;
   return lsan_malloc(size, stack);
 }

 }
 #endif // SANITIZER_INTERCEPT_MCHECK_MPROBE
 
 
 // TODO(alekseys): throw std::bad_alloc instead of dying on OOM.
 #define OPERATOR_NEW_BODY(nothrow)                         \
   ENSURE_LSAN_INITED;                                      \
   GET_STACK_TRACE_MALLOC;                                  \
-  void *res = Allocate(stack, size, 1, kAlwaysClearMemory);\
-  if (!nothrow && UNLIKELY(!res)) DieOnFailure::OnOOM();\
+  void *res = lsan_memalign(1, size, stack);               \
+  if (!nothrow && UNLIKELY(!res)) DieOnFailure::OnOOM();   \
+  return res;
+#define OPERATOR_NEW_BODY_ALIGN(nothrow)                   \
+  ENSURE_LSAN_INITED;                                      \
+  GET_STACK_TRACE_MALLOC;                                  \
+  void *res = lsan_memalign((uptr)align, size, stack);     \
+  if (!nothrow && UNLIKELY(!res)) DieOnFailure::OnOOM();   \
   return res;
 
 #define OPERATOR_DELETE_BODY \
   ENSURE_LSAN_INITED;        \
   Deallocate(ptr);
 
 // On OS X it's not enough to just provide our own 'operator new' and
 // 'operator delete' implementations, because they're going to be in the runtime
 // dylib, and the main executable will depend on both the runtime dylib and
 // libstdc++, each of has its implementation of new and delete.
 // To make sure that C++ allocation/deallocation operators are overridden on
 // OS X we need to intercept them using their mangled names.
 #if !SANITIZER_MAC
 
 INTERCEPTOR_ATTRIBUTE
 void *operator new(size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); }
 INTERCEPTOR_ATTRIBUTE
 void *operator new[](size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); }
 INTERCEPTOR_ATTRIBUTE
 void *operator new(size_t size, std::nothrow_t const&)
 { OPERATOR_NEW_BODY(true /*nothrow*/); }
 INTERCEPTOR_ATTRIBUTE
 void *operator new[](size_t size, std::nothrow_t const&)
 { OPERATOR_NEW_BODY(true /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size, std::align_val_t align)
+{ OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size, std::align_val_t align)
+{ OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size, std::align_val_t align, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size, std::align_val_t align, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); }
 
 INTERCEPTOR_ATTRIBUTE
 void operator delete(void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; }
 INTERCEPTOR_ATTRIBUTE
 void operator delete[](void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; }
 INTERCEPTOR_ATTRIBUTE
 void operator delete(void *ptr, std::nothrow_t const&) { OPERATOR_DELETE_BODY; }
 INTERCEPTOR_ATTRIBUTE
 void operator delete[](void *ptr, std::nothrow_t const &)
 { OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, std::align_val_t) NOEXCEPT
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, std::align_val_t) NOEXCEPT
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, std::align_val_t, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, std::align_val_t, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, size_t size, std::align_val_t) NOEXCEPT
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, size_t size, std::align_val_t) NOEXCEPT
+{ OPERATOR_DELETE_BODY; }
 
 #else  // SANITIZER_MAC
 
 INTERCEPTOR(void *, _Znwm, size_t size)
 { OPERATOR_NEW_BODY(false /*nothrow*/); }
 INTERCEPTOR(void *, _Znam, size_t size)
 { OPERATOR_NEW_BODY(false /*nothrow*/); }
 INTERCEPTOR(void *, _ZnwmRKSt9nothrow_t, size_t size, std::nothrow_t const&)
 { OPERATOR_NEW_BODY(true /*nothrow*/); }
 INTERCEPTOR(void *, _ZnamRKSt9nothrow_t, size_t size, std::nothrow_t const&)
 { OPERATOR_NEW_BODY(true /*nothrow*/); }
 
 INTERCEPTOR(void, _ZdlPv, void *ptr)
 { OPERATOR_DELETE_BODY; }
 INTERCEPTOR(void, _ZdaPv, void *ptr)
 { OPERATOR_DELETE_BODY; }
 INTERCEPTOR(void, _ZdlPvRKSt9nothrow_t, void *ptr, std::nothrow_t const&)
 { OPERATOR_DELETE_BODY; }
 INTERCEPTOR(void, _ZdaPvRKSt9nothrow_t, void *ptr, std::nothrow_t const&)
 { OPERATOR_DELETE_BODY; }
 
 #endif  // !SANITIZER_MAC
 
 
 ///// Thread initialization and finalization. /////
 
 static unsigned g_thread_finalize_key;
 
 static void thread_finalize(void *v) {