1 files changed, 4 insertions, 1 deletions
diff --git a/test/Analysis/Inputs/system-header-simulator.h b/test/Analysis/Inputs/system-header-simulator.h
index 2e6f1e7d4a96..8542387d4277 100644
--- a/test/Analysis/Inputs/system-header-simulator.h
+++ b/test/Analysis/Inputs/system-header-simulator.h
@@ -32,6 +32,7 @@ typedef __typeof(sizeof(int)) size_t;
 size_t strlen(const char *);
 
 char *strcpy(char *restrict, const char *restrict);
+char *strncpy(char *dst, const char *src, size_t n);
 void *memcpy(void *dst, const void *src, size_t n);
 
 typedef unsigned long __darwin_pthread_key_t;
@@ -109,4 +110,6 @@ void _Exit(int status) __attribute__ ((__noreturn__));
 #ifndef NULL
 #define __DARWIN_NULL 0
 #define NULL __DARWIN_NULL
-#endif
-\ No newline at end of file
+#endif
+
+#define offsetof(t, d) __builtin_offsetof(t, d)
+\ No newline at end of file