diff --git a/gear-lib/libdebug/libdebug.c b/gear-lib/libdebug/libdebug.c
index bcaf4aa8..db129ae9 100644
--- a/gear-lib/libdebug/libdebug.c
+++ b/gear-lib/libdebug/libdebug.c
@@ -148,7 +148,7 @@ static void backtrace_symbols_detail(void *array[], int size)
     for (i = 1; i < size; ++i) {//from 1, ignore this file info
         fprintf(fp, "%p\n", array[i]);
     }
-    fclose(fp);
+    pclose(fp);
 }
 #endif
 
diff --git a/gear-lib/libposix/libposix.h b/gear-lib/libposix/libposix.h
index a20085df..cda67a22 100644
--- a/gear-lib/libposix/libposix.h
+++ b/gear-lib/libposix/libposix.h
@@ -271,8 +271,8 @@ struct reflect {
     void_fn fn;
     const char* name;
 };
-struct reflect __start_reflect;
-struct reflect __stop_reflect;
+extern struct reflect __start_reflect;
+extern struct reflect __stop_reflect;
 
 #define REFLECT_DEF(x) __attribute__((section("reflect"), aligned(sizeof(void*)))) \
             struct reflect __##x = {(void_fn)x, #x};