From d0dc3489dc701036ee5e077964851a34f449029a Mon Sep 17 00:00:00 2001
From: =?utf8?q?Bj=C3=B6rn=20Esser?= <besser82@fedoraproject.org>
Date: Mon, 13 Apr 2020 11:29:52 +0200
Subject: [PATCH] Enforce strict prototypes.

---
 CMakeLists.txt | 1 +
 json_object.c  | 2 +-
 json_object.h  | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 60f529a..04d21f9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -240,6 +240,7 @@ if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
     set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} -Wextra")
     set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} -Wwrite-strings")
     set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} -Wno-unused-parameter")
+    set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} -Wstrict-prototypes")
 
     add_definitions(-D_GNU_SOURCE)
 elseif ("${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC")
diff --git a/json_object.c b/json_object.c
index 4edfae9..e65ea04 100644
--- a/json_object.c
+++ b/json_object.c
@@ -1373,7 +1373,7 @@ static int json_array_equal(struct json_object *jso1, struct json_object *jso2)
 	return 1;
 }
 
-struct json_object *json_object_new_null()
+struct json_object *json_object_new_null(void)
 {
 	return NULL;
 }
diff --git a/json_object.h b/json_object.h
index 17fc3fc..7c0d1f2 100644
--- a/json_object.h
+++ b/json_object.h
@@ -940,7 +940,7 @@ JSON_EXPORT int json_object_set_string_len(json_object *obj, const char *new_val
  * along the lines of the other json_object_new_* functions.
  * It always returns NULL, and it is entirely acceptable to simply use NULL directly.
  */
-JSON_EXPORT struct json_object *json_object_new_null();
+JSON_EXPORT struct json_object *json_object_new_null(void);
 
 /** Check if two json_object's are equal
  *
-- 
2.40.0