Index: lib/sanitizer_common/sanitizer_interface_internal.h
===================================================================
--- lib/sanitizer_common/sanitizer_interface_internal.h
+++ lib/sanitizer_common/sanitizer_interface_internal.h
@@ -69,6 +69,20 @@
   int __sanitizer_get_module_and_offset_for_pc(
       __sanitizer::uptr pc, char *module_path,
       __sanitizer::uptr module_path_len, __sanitizer::uptr *pc_offset);
-  } // extern "C"
+
+  WEAK_DECL(void, __sanitizer_cov_trace_cmp, void);
+  WEAK_DECL(void, __sanitizer_cov_trace_cmp1, void);
+  WEAK_DECL(void, __sanitizer_cov_trace_cmp2, void);
+  WEAK_DECL(void, __sanitizer_cov_trace_cmp4, void);
+  WEAK_DECL(void, __sanitizer_cov_trace_cmp8, void);
+  WEAK_DECL(void, __sanitizer_cov_trace_switch, void);
+  WEAK_DECL(void, __sanitizer_cov_trace_div4, void);
+  WEAK_DECL(void, __sanitizer_cov_trace_div8, void);
+  WEAK_DECL(void, __sanitizer_cov_trace_gep, void);
+  WEAK_DECL(void, __sanitizer_cov_trace_pc_indir, void);
+  WEAK_DECL(void, __sanitizer_cov_trace_pc_guard, __sanitizer::u32*);
+  WEAK_DECL(void, __sanitizer_cov_trace_pc_guard_init, __sanitizer::u32*,
+      __sanitizer::u32*);
+} // extern "C"
 
 #endif  // SANITIZER_INTERFACE_INTERNAL_H