diff --git a/include/tlibc/collections/List.h b/include/tlibc/collections/List.h
index 8a4c3ed..4726f17 100755
--- a/include/tlibc/collections/List.h
+++ b/include/tlibc/collections/List.h
@@ -27,12 +27,14 @@ static inline List(T) List_##T##_construct(T* data_ptr, u32 occupied_len, u32 ca
  \
 static inline List(T) List_##T##_alloc(u32 initial_capacity) { \
     List_ l = _List_alloc(initial_capacity, sizeof(T)); \
-    return *(List(T)*)(void*)&l; \
+    void* l_ptr = &l; \
+    return *(List(T)*)l_ptr; \
 } \
  \
 static inline List(T) List_##T##_copy(const List(T)* src) { \
     List_ l = _List_copy((void*)src); \
-    return *(List(T)*)(void*)&l; \
+    void* l_ptr = &l; \
+    return *(List(T)*)l_ptr; \
 } \
  \
 static inline void List_##T##_destroy(List(T)* self) { _List_destroy((void*)self); } \
diff --git a/include/tlibc/errors.h b/include/tlibc/errors.h
index a7909ed..66f7491 100755
--- a/include/tlibc/errors.h
+++ b/include/tlibc/errors.h
@@ -92,7 +92,7 @@ typedef struct Result_ {
     RESULT_ERROR_CODE_FMT(NONE, 0, FORMAT ,##ARGS)
 
 #define RESULT_ERROR_ERRNO() \
-    RESULT_ERROR_CODE(LIBC_ERRNO, errno, strerror_malloc(errno), true)
+    RESULT_ERROR_CODE(LIBC_ERRNO, errno, str_from_cstr(strerror_malloc(errno)), true)
 
 #define RESULT_VOID (Result_){ .error = NULL, .u = 0 }
 #define RESULT_VALUE(FIELD, V) (Result_){ .error = NULL, .FIELD = V }
@@ -141,7 +141,7 @@ typedef struct Result_ {
 #define _try_stderrcode(CALL, N) do {\
     int _rname(N) = CALL;\
     if(_rname(N) != 0){\
-        Return RESULT_ERROR_CODE(LIBC_ERRNO, _rname(N), strerror_malloc(_rname(N)), true);\
+        Return RESULT_ERROR_CODE(LIBC_ERRNO, _rname(N), str_from_cstr(strerror_malloc(_rname(N))), true);\
     }\
 } while(0)