import of libc++abi 6.0.0

2 files changed, 36 insertions, 20 deletions

diff --git a/lib/libcxxabi/include/__cxxabi_config.h b/lib/libcxxabi/include/__cxxabi_config.h
index 61555f1a927..65b1961e68a 100644
--- a/lib/libcxxabi/include/__cxxabi_config.h
+++ b/lib/libcxxabi/include/__cxxabi_config.h
@@ -12,17 +12,20 @@
 
 #if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) &&                 \
     !defined(__ARM_DWARF_EH__)
-#define LIBCXXABI_ARM_EHABI 1
-#else
-#define LIBCXXABI_ARM_EHABI 0
+#define _LIBCXXABI_ARM_EHABI
 #endif
 
 #if !defined(__has_attribute)
 #define __has_attribute(_attribute_) 0
 #endif
 
-#if defined(_LIBCXXABI_DLL)
- #if defined(cxxabi_EXPORTS)
+#if defined(_WIN32)
+ #if defined(_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS)
+  #define _LIBCXXABI_HIDDEN
+  #define _LIBCXXABI_DATA_VIS
+  #define _LIBCXXABI_FUNC_VIS
+  #define _LIBCXXABI_TYPE_VIS
+ #elif defined(_LIBCXXABI_BUILDING_LIBRARY)
   #define _LIBCXXABI_HIDDEN
   #define _LIBCXXABI_DATA_VIS __declspec(dllexport)
   #define _LIBCXXABI_FUNC_VIS __declspec(dllexport)
@@ -34,14 +37,27 @@
   #define _LIBCXXABI_TYPE_VIS __declspec(dllimport)
  #endif
 #else
- #define _LIBCXXABI_HIDDEN __attribute__((__visibility__("hidden")))
- #define _LIBCXXABI_DATA_VIS __attribute__((__visibility__("default")))
- #define _LIBCXXABI_FUNC_VIS __attribute__((__visibility__("default")))
- #if __has_attribute(__type_visibility__)
-  #define _LIBCXXABI_TYPE_VIS __attribute__((__type_visibility__("default")))
+ #if !defined(_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS)
+  #define _LIBCXXABI_HIDDEN __attribute__((__visibility__("hidden")))
+  #define _LIBCXXABI_DATA_VIS __attribute__((__visibility__("default")))
+  #define _LIBCXXABI_FUNC_VIS __attribute__((__visibility__("default")))
+  #if __has_attribute(__type_visibility__)
+   #define _LIBCXXABI_TYPE_VIS __attribute__((__type_visibility__("default")))
+  #else
+   #define _LIBCXXABI_TYPE_VIS __attribute__((__visibility__("default")))
+  #endif
  #else
-  #define _LIBCXXABI_TYPE_VIS __attribute__((__visibility__("default")))
+  #define _LIBCXXABI_HIDDEN
+  #define _LIBCXXABI_DATA_VIS
+  #define _LIBCXXABI_FUNC_VIS
+  #define _LIBCXXABI_TYPE_VIS
  #endif
 #endif
 
+#if defined(_WIN32)
+#define _LIBCXXABI_WEAK
+#else
+#define _LIBCXXABI_WEAK __attribute__((__weak__))
+#endif
+
 #endif // ____CXXABI_CONFIG_H
diff --git a/lib/libcxxabi/include/cxxabi.h b/lib/libcxxabi/include/cxxabi.h
index e4a6797a815..2596560d6e9 100644
--- a/lib/libcxxabi/include/cxxabi.h
+++ b/lib/libcxxabi/include/cxxabi.h
@@ -21,7 +21,7 @@
 #include <__cxxabi_config.h>
 
 #define _LIBCPPABI_VERSION 1002
-#define LIBCXXABI_NORETURN  __attribute__((noreturn))
+#define _LIBCXXABI_NORETURN  __attribute__((noreturn))
 
 #ifdef __cplusplus
 
@@ -45,7 +45,7 @@ extern _LIBCXXABI_FUNC_VIS void
 __cxa_free_exception(void *thrown_exception) throw();
 
 // 2.4.3 Throwing the Exception Object
-extern _LIBCXXABI_FUNC_VIS LIBCXXABI_NORETURN void
+extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
 __cxa_throw(void *thrown_exception, std::type_info *tinfo,
             void (*dest)(void *));
 
@@ -55,7 +55,7 @@ __cxa_get_exception_ptr(void *exceptionObject) throw();
 extern _LIBCXXABI_FUNC_VIS void *
 __cxa_begin_catch(void *exceptionObject) throw();
 extern _LIBCXXABI_FUNC_VIS void __cxa_end_catch();
-#if LIBCXXABI_ARM_EHABI
+#if defined(_LIBCXXABI_ARM_EHABI)
 extern _LIBCXXABI_FUNC_VIS bool
 __cxa_begin_cleanup(void *exceptionObject) throw();
 extern _LIBCXXABI_FUNC_VIS void __cxa_end_cleanup();
@@ -63,19 +63,19 @@ extern _LIBCXXABI_FUNC_VIS void __cxa_end_cleanup();
 extern _LIBCXXABI_FUNC_VIS std::type_info *__cxa_current_exception_type();
 
 // 2.5.4 Rethrowing Exceptions
-extern _LIBCXXABI_FUNC_VIS LIBCXXABI_NORETURN void __cxa_rethrow();
+extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_rethrow();
 
 // 2.6 Auxiliary Runtime APIs
-extern _LIBCXXABI_FUNC_VIS LIBCXXABI_NORETURN void __cxa_bad_cast(void);
-extern _LIBCXXABI_FUNC_VIS LIBCXXABI_NORETURN void __cxa_bad_typeid(void);
-extern _LIBCXXABI_FUNC_VIS LIBCXXABI_NORETURN void
+extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_bad_cast(void);
+extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_bad_typeid(void);
+extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
 __cxa_throw_bad_array_new_length(void);
 
 // 3.2.6 Pure Virtual Function API
-extern _LIBCXXABI_FUNC_VIS LIBCXXABI_NORETURN void __cxa_pure_virtual(void);
+extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_pure_virtual(void);
 
 // 3.2.7 Deleted Virtual Function API
-extern _LIBCXXABI_FUNC_VIS LIBCXXABI_NORETURN void __cxa_deleted_virtual(void);
+extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_deleted_virtual(void);
 
 // 3.3.2 One-time Construction API
 #ifdef __arm__