Fix. Cleanup slists references in the reset function

src/lceasy.c

@@ -292,6 +292,10 @@ static int lcurl_easy_reset(lua_State *L){
   lua_settop(L, 1);
 
   if(p->storage != LUA_NOREF){
+    int i;
+    for (i = 0; i < LCURL_LIST_COUNT; ++i) {
+      p->lists[i] = LUA_NOREF;
+    }
     lcurl_storage_free(L, p->storage);
     p->storage = lcurl_storage_init(L);
     lua_settop(L, 1);

src/lcurl.c

@@ -25,6 +25,18 @@
 #  define LCURL_EXPORT_API LUALIB_API
 #endif
 
+static const char* LCURL_REGISTRY = "LCURL Registry";
+static const char* LCURL_USERVAL = "LCURL Uservalues";
+#if LCURL_CURL_VER_GE(7,56,0)
+static const char* LCURL_MIME_EASY_MAP = "LCURL Mime easy";
+#endif
+
+#if LCURL_CURL_VER_GE(7,56,0)
+#define NUP 3
+#else
+#define NUP 2
+#endif
+
 static int lcurl_easy_new_safe(lua_State *L){
   return lcurl_easy_create(L, LCURL_ERROR_RETURN);
 }
@@ -78,6 +90,11 @@ static int lcurl_version(lua_State *L){
   return 1;
 }
 
+static int lcurl_debug_getregistry(lua_State *L) {
+  lua_rawgetp(L, LUA_REGISTRYINDEX, LCURL_REGISTRY);
+  return 1;
+}
+
 static int push_upper(lua_State *L, const char *str){
   char buffer[128];
   size_t i, n = strlen(str);
@@ -192,7 +209,9 @@ static const struct luaL_Reg lcurl_functions[] = {
 #endif
   {"version",         lcurl_version          },
   {"version_info",    lcurl_version_info     },
-  
+ 
+  {"__getregistry",   lcurl_debug_getregistry},
+
   {NULL,NULL}
 };
 
@@ -208,6 +227,8 @@ static const struct luaL_Reg lcurl_functions_safe[] = {
   {"version",         lcurl_version               },
   {"version_info",    lcurl_version_info          },
 
+  { "__getregistry",   lcurl_debug_getregistry },
+
   {NULL,NULL}
 };
 
@@ -222,17 +243,6 @@ static const lcurl_const_t lcurl_flags[] = {
 
 static volatile int LCURL_INIT = 0;
 
-static const char* LCURL_REGISTRY = "LCURL Registry";
-static const char* LCURL_USERVAL  = "LCURL Uservalues";
-#if LCURL_CURL_VER_GE(7,56,0)
-static const char* LCURL_MIME_EASY_MAP  = "LCURL Mime easy";
-#endif
-
-#if LCURL_CURL_VER_GE(7,56,0)
-#define NUP 3
-#else
-#define NUP 2
-#endif
 
 #if LCURL_CURL_VER_GE(7,56,0)
 #define LCURL_PUSH_NUP(L) lua_pushvalue(L, -NUP-1);lua_pushvalue(L, -NUP-1);lua_pushvalue(L, -NUP-1);

test/test_easy.lua

@@ -1103,6 +1103,23 @@ function test_set_empty_array()
   assert_not_match("X%-Custom:%s*value\r\n", headers)
 end
 
+function test_reset_slist()
+  c = curl.easy {
+    httpheader = {'X-Foo: 1'},
+    resolve    = {'example.com:80:127.0.0.1'}
+  }
+
+  c:reset()
+
+  c:setopt{
+    httpheader = {'X-Foo: 2'},
+    resolve    = {'example.com:80:127.0.0.1'}
+  }
+
+  local body, headers = assert_string(dump_request(c))
+  assert_match("X%-Foo:%s2\r\n", headers)
+end
+
 end
 
 local _ENV = TEST_CASE'set_null'             if ENABLE then