Warning fixes.

ISO C99 doesn’t support unnamed structs/unions.
Comparison of distinct pointer types lacks a cast.
Dereferencing type-punned pointer will break strict-aliasing rules.
Type of bit-field ‘ext’ is a GCC extension.

JerryScript-DCO-1.0-Signed-off-by: Robert Sipka rsipka.uszeged@partner.samsung.com

jerry-core/lit/lit-literal.c

@@ -570,7 +570,7 @@ lit_literal_exists (lit_literal_t lit) /**< literal to check for existence */
 lit_literal_t
 lit_get_literal_by_cp (rcs_cpointer_t lit_cp) /**< compressed pointer to literal */
 {
-  JERRY_ASSERT (lit_cp.packed_value != MEM_CP_NULL);
+  JERRY_ASSERT (lit_cp.u.packed_value != MEM_CP_NULL);
   lit_literal_t lit = rcs_cpointer_decompress (lit_cp);
   JERRY_ASSERT (lit_literal_exists (lit));
 

jerry-core/lit/lit-strings.h

@@ -99,7 +99,7 @@
  */
 typedef struct
 {
-  lit_utf8_size_t offset : LIT_ITERATOR_OFFSET_WIDTH; /** offset to utf-8 char */
+  __extension__ lit_utf8_size_t offset : LIT_ITERATOR_OFFSET_WIDTH; /** offset to utf-8 char */
   bool is_non_bmp_middle: 1; /** flag indicating that current position of the iterator is the middle of
                               *  4-byte char */
 } lit_utf8_iterator_pos_t;