[hwasan] Provide __sanitizer_* aliases to allocator functions.

Summary:
Export __sanitizer_malloc, etc as aliases to malloc, etc.
This way users can wrap sanitizer malloc, even in fully static binaries.

Both jemalloc and tcmalloc provide similar aliases (je_* and tc_*).

Reviewers: vitalybuka, kcc

Subscribers: llvm-commits, kubamracek

Differential Revision: https://reviews.llvm.org/D50570

2 files changed, 15 insertions, 1 deletions

diff --git a/compiler-rt/include/sanitizer/allocator_interface.h b/compiler-rt/include/sanitizer/allocator_interface.h
index 89f328301db..e44c4a13ed6 100644
--- a/compiler-rt/include/sanitizer/allocator_interface.h
+++ b/compiler-rt/include/sanitizer/allocator_interface.h
@@ -82,7 +82,6 @@ extern "C" {
      Currently available with ASan only.
   */
   void __sanitizer_purge_allocator(void);
-
 #ifdef __cplusplus
 }  // extern "C"
 #endif
diff --git a/compiler-rt/include/sanitizer/hwasan_interface.h b/compiler-rt/include/sanitizer/hwasan_interface.h
index 7f0d36f718b..75d31a6c35f 100644
--- a/compiler-rt/include/sanitizer/hwasan_interface.h
+++ b/compiler-rt/include/sanitizer/hwasan_interface.h
@@ -32,6 +32,21 @@ extern "C" {
   void __hwasan_enable_allocator_tagging(void);
   void __hwasan_disable_allocator_tagging(void);
 
+  int __sanitizer_posix_memalign(void **memptr, size_t alignment, size_t size);
+  void * __sanitizer_memalign(size_t alignment, size_t size);
+  void * __sanitizer_aligned_alloc(size_t alignment, size_t size);
+  void * __sanitizer___libc_memalign(size_t alignment, size_t size);
+  void * __sanitizer_valloc(size_t size);
+  void * __sanitizer_pvalloc(size_t size);
+  void __sanitizer_free(void *ptr);
+  void __sanitizer_cfree(void *ptr);
+  size_t __sanitizer_malloc_usable_size(const void *ptr);
+  struct mallinfo __sanitizer_mallinfo();
+  int __sanitizer_mallopt(int cmd, int value);
+  void __sanitizer_malloc_stats(void);
+  void * __sanitizer_calloc(size_t nmemb, size_t size);
+  void * __sanitizer_realloc(void *ptr, size_t size);
+  void * __sanitizer_malloc(size_t size);
 #ifdef __cplusplus
 }  // extern "C"
 #endif