Define and use `UNW_EMPTY_STRUCT` also for x86

1 files changed, 6 insertions, 2 deletions

diff --git a/include/libunwind-x86.h b/include/libunwind-x86.h
index 542c1774..d3b741d3 100644
--- a/include/libunwind-x86.h
+++ b/include/libunwind-x86.h
@@ -34,6 +34,10 @@ extern "C" {
 #include <inttypes.h>
 #include <ucontext.h>
 
+#ifndef UNW_EMPTY_STRUCT
+#  define UNW_EMPTY_STRUCT uint8_t unused;
+#endif
+
 #define UNW_TARGET      x86
 #define UNW_TARGET_X86  1
 
@@ -158,7 +162,7 @@ x86_regnum_t;
 typedef struct unw_tdep_save_loc
   {
     /* Additional target-dependent info on a save location.  */
-    char unused;
+    UNW_EMPTY_STRUCT
   }
 unw_tdep_save_loc_t;
 
@@ -170,7 +174,7 @@ typedef ucontext_t unw_tdep_context_t;
 typedef struct
   {
     /* no x86-specific auxiliary proc-info */
-    char unused;
+    UNW_EMPTY_STRUCT
   }
 unw_tdep_proc_info_t;