Enable -Wundef.

The problem that caused the need for http://reviews.llvm.org/D7419 was
caused by testing the value of something that was undefined. This
should prevent that in the future.


git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@228257 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 10 insertions, 10 deletions

diff --git a/include/cxxabi.h b/include/cxxabi.h
index 2614327..ae75f86 100644
--- a/include/cxxabi.h
+++ b/include/cxxabi.h
@@ -77,7 +77,7 @@ extern LIBCXXABI_NORETURN void __cxa_pure_virtual(void);
 extern LIBCXXABI_NORETURN void __cxa_deleted_virtual(void);
 
 // 3.3.2 One-time Construction API
-#if __arm__
+#ifdef __arm__
 extern int  __cxa_guard_acquire(uint32_t*);
 extern void __cxa_guard_release(uint32_t*);
 extern void __cxa_guard_abort(uint32_t*);
diff --git a/include/libunwind.h b/include/libunwind.h
index 448d86a..9c69551 100644
--- a/include/libunwind.h
+++ b/include/libunwind.h
@@ -25,9 +25,9 @@
 #define LIBCXXABI_ARM_EHABI 0
 #endif
 
-#if __APPLE__
+#ifdef __APPLE__
   #include <Availability.h>
-    #if __arm__
+    #ifdef __arm__
        #define LIBUNWIND_AVAIL __attribute__((unavailable))
     #else
       #define LIBUNWIND_AVAIL __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_5_0)
@@ -100,7 +100,7 @@ extern int unw_set_reg(unw_cursor_t *, unw_regnum_t, unw_word_t) LIBUNWIND_AVAIL
 extern int unw_set_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t)  LIBUNWIND_AVAIL;
 extern int unw_resume(unw_cursor_t *) LIBUNWIND_AVAIL;
 
-#if __arm__
+#ifdef __arm__
 /* Save VFP registers in FSTMX format (instead of FSTMD). */
 extern void unw_save_vfp_as_X(unw_cursor_t *) LIBUNWIND_AVAIL;
 #endif
@@ -113,7 +113,7 @@ extern int unw_is_signal_frame(unw_cursor_t *) LIBUNWIND_AVAIL;
 extern int unw_get_proc_name(unw_cursor_t *, char *, size_t, unw_word_t *) LIBUNWIND_AVAIL;
 //extern int       unw_get_save_loc(unw_cursor_t*, int, unw_save_loc_t*);
 
-#if UNW_REMOTE
+#ifdef UNW_REMOTE
 /*
  * Mac OS X "remote" API for unwinding other processes on same machine
  *
@@ -122,7 +122,7 @@ extern unw_addr_space_t unw_local_addr_space;
 extern unw_addr_space_t unw_create_addr_space_for_task(task_t);
 extern void unw_destroy_addr_space(unw_addr_space_t);
 extern int unw_init_remote_thread(unw_cursor_t *, unw_addr_space_t, thread_t *);
-#endif
+#endif /* UNW_REMOTE */
 
 /*
  * traditional libuwind "remote" API
diff --git a/include/unwind.h b/include/unwind.h
index 02cda67..52e6304 100644
--- a/include/unwind.h
+++ b/include/unwind.h
@@ -159,7 +159,7 @@ extern "C" {
 //
 // The following are the base functions documented by the C++ ABI
 //
-#if __USING_SJLJ_EXCEPTIONS__
+#ifdef __USING_SJLJ_EXCEPTIONS__
 extern _Unwind_Reason_Code
     _Unwind_SjLj_RaiseException(_Unwind_Exception *exception_object);
 extern void _Unwind_SjLj_Resume(_Unwind_Exception *exception_object);
@@ -245,7 +245,7 @@ extern void _Unwind_SetIP(struct _Unwind_Context *, uintptr_t new_value);
 extern uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context);
 extern uintptr_t
     _Unwind_GetLanguageSpecificData(struct _Unwind_Context *context);
-#if __USING_SJLJ_EXCEPTIONS__
+#ifdef __USING_SJLJ_EXCEPTIONS__
 extern _Unwind_Reason_Code
     _Unwind_SjLj_ForcedUnwind(_Unwind_Exception *exception_object,
                               _Unwind_Stop_Fn stop, void *stop_parameter);
@@ -255,7 +255,7 @@ extern _Unwind_Reason_Code
                          _Unwind_Stop_Fn stop, void *stop_parameter);
 #endif
 
-#if __USING_SJLJ_EXCEPTIONS__
+#ifdef __USING_SJLJ_EXCEPTIONS__
 typedef struct _Unwind_FunctionContext *_Unwind_FunctionContext_t;
 extern void _Unwind_SjLj_Register(_Unwind_FunctionContext_t fc);
 extern void _Unwind_SjLj_Unregister(_Unwind_FunctionContext_t fc);
@@ -268,7 +268,7 @@ extern void _Unwind_SjLj_Unregister(_Unwind_FunctionContext_t fc);
 //
 //  called by __cxa_rethrow().
 //
-#if __USING_SJLJ_EXCEPTIONS__
+#ifdef __USING_SJLJ_EXCEPTIONS__
 extern _Unwind_Reason_Code
     _Unwind_SjLj_Resume_or_Rethrow(_Unwind_Exception *exception_object);
 #else