diff --git a/lanes-3.16.0-0.rockspec b/lanes-3.16.1-0.rockspec
similarity index 97%
rename from lanes-3.16.0-0.rockspec
rename to lanes-3.16.1-0.rockspec
index 55bbfb41..65115a16 100644
--- a/lanes-3.16.0-0.rockspec
+++ b/lanes-3.16.1-0.rockspec
@@ -7,11 +7,11 @@
 
 package = "Lanes"
 
-version = "3.16.0-0"
+version = "3.16.1-0"
 
 source= {
 	url= "git+https://github.com/LuaLanes/lanes.git",
-	branch= "v3.16.0"
+	branch= "v3.16.1"
 }
 
 description = {
diff --git a/src/keeper.c b/src/keeper.c
index f4dde0a0..8aa734aa 100644
--- a/src/keeper.c
+++ b/src/keeper.c
@@ -612,7 +612,7 @@ void close_keepers( Universe* U)
         // free the keeper bookkeeping structure
         {
             AllocatorDefinition* const allocD = &U->internal_allocator;
-            allocD->allocF( allocD->allocUD, U->keepers, sizeof( Keepers) + (nbKeepers - 1) * sizeof( Keeper), 0);
+            (void) allocD->allocF( allocD->allocUD, U->keepers, sizeof( Keepers) + (nbKeepers - 1) * sizeof( Keeper), 0);
             U->keepers = NULL;
         }
     }
diff --git a/src/lanes.c b/src/lanes.c
index 0aab244a..d2c95ee7 100644
--- a/src/lanes.c
+++ b/src/lanes.c
@@ -255,7 +255,7 @@ static void lane_cleanup( Lane* s)
 
     {
         AllocatorDefinition* const allocD = &s->U->internal_allocator;
-        allocD->allocF(allocD->allocUD, s, sizeof(Lane), 0);
+        (void) allocD->allocF(allocD->allocUD, s, sizeof(Lane), 0);
     }
 }
 
@@ -1225,10 +1225,10 @@ LUAG_FUNC( lane_new)
     // 's' is allocated from heap, not Lua, since its life span may surpass the handle's (if free running thread)
     //
     // a Lane full userdata needs a single uservalue
-    ud = lua_newuserdatauv( L, sizeof( Lane*), 1);           // func libs priority globals package required gc_cb lane
+    ud = lua_newuserdatauv( L, sizeof( Lane*), 1);                   // func libs priority globals package required gc_cb lane
     {
         AllocatorDefinition* const allocD = &U->internal_allocator;
-        s = *ud = (Lane*)allocD->allocF(allocD->allocUD, NULL, 0, sizeof(Lane));
+        s = *ud = (Lane*) allocD->allocF(allocD->allocUD, NULL, 0, sizeof(Lane));
     }
     if( s == NULL)
     {
diff --git a/src/linda.c b/src/linda.c
index 390816b4..8b597900 100644
--- a/src/linda.c
+++ b/src/linda.c
@@ -797,8 +797,7 @@ static void* linda_id( lua_State* L, DeepOp op_)
             {
                 Universe* const U = universe_get(L);
                 AllocatorDefinition* const allocD = &U->internal_allocator;
-
-                s = (struct s_Linda*)allocD->allocF(allocD->allocUD, NULL, 0, sizeof(struct s_Linda) + name_len); // terminating 0 is already included
+                s = (struct s_Linda*) allocD->allocF(allocD->allocUD, NULL, 0, sizeof(struct s_Linda) + name_len); // terminating 0 is already included
             }
             if( s)
             {
@@ -835,8 +834,7 @@ static void* linda_id( lua_State* L, DeepOp op_)
             {
                 Universe* const U = universe_get(L);
                 AllocatorDefinition* const allocD = &U->internal_allocator;
-
-                allocD->allocF(allocD->allocUD, linda, sizeof(struct s_Linda) + strlen(linda->name), 0);
+                (void) allocD->allocF(allocD->allocUD, linda, sizeof(struct s_Linda) + strlen(linda->name), 0);
             }
             return NULL;
         }
diff --git a/src/state.c b/src/state.c
index ef708422..21ca3978 100644
--- a/src/state.c
+++ b/src/state.c
@@ -259,7 +259,7 @@ lua_State* create_state( Universe* U, lua_State* from_)
         lua_pushcclosure( from_, U->provide_allocator, 0);
         lua_call( from_, 0, 1);
         {
-            AllocatorDefinition* def = lua_touserdata( from_, -1);
+            AllocatorDefinition* const def = lua_touserdata( from_, -1);
             L = lua_newstate( def->allocF, def->allocUD);
         }
         lua_pop( from_, 1);
diff --git a/src/tools.c b/src/tools.c
index 5a6ae92f..80e0f711 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -155,6 +155,7 @@ void luaG_dump( lua_State* L)
 
 // ################################################################################################
 
+// same as PUC-Lua l_alloc
 static void* libc_lua_Alloc(void* ud, void* ptr, size_t osize, size_t nsize)
 {
     (void)ud; (void)osize;  /* not used */
@@ -182,7 +183,7 @@ static void* protected_lua_Alloc( void *ud, void *ptr, size_t osize, size_t nsiz
 static int luaG_provide_protected_allocator( lua_State* L)
 {
     Universe* U = universe_get( L);
-    AllocatorDefinition* def = lua_newuserdatauv( L, sizeof(AllocatorDefinition), 0);
+    AllocatorDefinition* const def = lua_newuserdatauv( L, sizeof(AllocatorDefinition), 0);
     def->allocF = protected_lua_Alloc;
     def->allocUD = &U->protected_allocator;
     return 1;
@@ -236,7 +237,7 @@ void initialize_allocator_function( Universe* U, lua_State* L)
     lua_getfield( L, -1, "internal_allocator");             // settings "libc"|"allocator"
     {
         char const* allocator = lua_tostring( L, -1);
-        if (stricmp(allocator, "libc") == 0)
+        if (strcmp(allocator, "libc") == 0)
         {
             U->internal_allocator.allocF = libc_lua_Alloc;
             U->internal_allocator.allocUD = NULL;
diff --git a/tests/basic.lua b/tests/basic.lua
index 7bbcbb37..385e22f9 100644
--- a/tests/basic.lua
+++ b/tests/basic.lua
@@ -7,7 +7,7 @@
 --      - ...
 --
 
-local require_lanes_result_1, require_lanes_result_2 = require "lanes".configure{ with_timers = false}
+local require_lanes_result_1, require_lanes_result_2 = require "lanes".configure{ with_timers = false, internal_allocator = "libc"}
 print( "require_lanes_result:", require_lanes_result_1, require_lanes_result_2)
 local lanes = require_lanes_result_1
 
diff --git a/tests/linda_perf.lua b/tests/linda_perf.lua
index fa2d6332..a170b01a 100644
--- a/tests/linda_perf.lua
+++ b/tests/linda_perf.lua
@@ -78,7 +78,6 @@ end
 
 local tests1 =
 {
-	--[[
 	{ 10000, 2000000, 0},
 	{ 10000, 2000000, 1},
 	{ 10000, 2000000, 2},
@@ -88,7 +87,6 @@ local tests1 =
 	{ 10000, 2000000, 13},
 	{ 10000, 2000000, 21},
 	{ 10000, 2000000, 44},
-	--]]
 }
 print "############################################\ntests #1"
 for k, v in pairs( tests1) do