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

Author: robertsipka

CMakeLists.txt

@@ -269,8 +269,8 @@ project (Jerry C ASM)
     endforeach()
   endmacro()
 
-  add_jerry_compile_warnings(all extra format-nonliteral init-self conversion sign-conversion format-security missing-declarations)
-  add_jerry_compile_flags(-pedantic -Wno-stack-protector -Wno-attributes)
+  add_jerry_compile_warnings(all extra format-nonliteral init-self conversion sign-conversion format-security missing-declarations pedantic)
+  add_jerry_compile_flags(-Wno-stack-protector -Wno-attributes)
   if(CMAKE_COMPILER_IS_GNUCC)
     add_jerry_compile_warnings(logical-op)
   else()

jerry-core/ecma/base/ecma-globals.h

@@ -294,8 +294,8 @@ typedef enum
  */
 typedef struct
 {
-  mem_cpointer_t getter_p : ECMA_POINTER_FIELD_WIDTH; /**< pointer to getter object */
-  mem_cpointer_t setter_p : ECMA_POINTER_FIELD_WIDTH; /**< pointer to setter object */
+  __extension__ mem_cpointer_t getter_p : ECMA_POINTER_FIELD_WIDTH; /**< pointer to getter object */
+  __extension__ mem_cpointer_t setter_p : ECMA_POINTER_FIELD_WIDTH; /**< pointer to setter object */
 } ecma_getter_setter_pointers_t;
 
 /**
@@ -307,7 +307,7 @@ typedef struct __attr_packed___ ecma_property_t
   unsigned int type : 2;
 
   /** Compressed pointer to next property */
-  mem_cpointer_t next_property_p : ECMA_POINTER_FIELD_WIDTH;
+  __extension__ mem_cpointer_t next_property_p : ECMA_POINTER_FIELD_WIDTH;
 
   /** Property's details (depending on Type) */
   union
@@ -319,7 +319,7 @@ typedef struct __attr_packed___ ecma_property_t
       ecma_value_t value : ECMA_VALUE_SIZE;
 
       /** Compressed pointer to property's name (pointer to String) */
-      mem_cpointer_t name_p : ECMA_POINTER_FIELD_WIDTH;
+      __extension__ mem_cpointer_t name_p : ECMA_POINTER_FIELD_WIDTH;
 
       /** Flag indicating whether the property is registered in LCache */
       unsigned int is_lcached : 1;
@@ -338,7 +338,7 @@ typedef struct __attr_packed___ ecma_property_t
     struct __attr_packed___ ecma_named_accessor_property_t
     {
       /** Compressed pointer to property's name (pointer to String) */
-      mem_cpointer_t name_p : ECMA_POINTER_FIELD_WIDTH;
+      __extension__ mem_cpointer_t name_p : ECMA_POINTER_FIELD_WIDTH;
 
       /** Attribute 'Enumerable' (ecma_property_enumerable_value_t) */
       unsigned int enumerable : 1;
@@ -350,7 +350,7 @@ typedef struct __attr_packed___ ecma_property_t
       unsigned int is_lcached : 1;
 
       /** Compressed pointer to pair of pointers - to property's getter and setter */
-      mem_cpointer_t getter_setter_pair_cp : ECMA_POINTER_FIELD_WIDTH;
+      __extension__ mem_cpointer_t getter_setter_pair_cp : ECMA_POINTER_FIELD_WIDTH;
     } named_accessor_property;
 
     /** Description of internal property */
@@ -795,10 +795,10 @@ typedef struct ecma_string_t
     lit_cpointer_t lit_cp;
 
     /** Compressed pointer to an ecma_collection_header_t */
-    mem_cpointer_t collection_cp : ECMA_POINTER_FIELD_WIDTH;
+    __extension__ mem_cpointer_t collection_cp : ECMA_POINTER_FIELD_WIDTH;
 
     /** Compressed pointer to an ecma_number_t */
-    mem_cpointer_t number_cp : ECMA_POINTER_FIELD_WIDTH;
+    __extension__ mem_cpointer_t number_cp : ECMA_POINTER_FIELD_WIDTH;
 
     /** UInt32-represented number placed locally in the descriptor */
     uint32_t uint32_number;

jerry-core/ecma/base/ecma-helpers-string.c

@@ -978,7 +978,7 @@ ecma_compare_ecma_strings_longpath (const ecma_string_t *string1_p, /* ecma-stri
     {
       case ECMA_STRING_CONTAINER_LIT_TABLE:
       {
-        JERRY_ASSERT (string1_p->u.lit_cp.packed_value != string2_p->u.lit_cp.packed_value);
+        JERRY_ASSERT (string1_p->u.lit_cp.u.packed_value != string2_p->u.lit_cp.u.packed_value);
         return false;
       }
       case ECMA_STRING_CONTAINER_MAGIC_STRING:

jerry-core/ecma/base/ecma-helpers.c

@@ -1388,7 +1388,7 @@ ecma_bytecode_deref (ecma_compiled_code_t *bytecode_p) /**< byte code pointer */
 
     for (uint32_t i = const_literal_end; i < literal_end; i++)
     {
-      mem_cpointer_t bytecode_cpointer = literal_start_p[i].value.base_cp;
+      mem_cpointer_t bytecode_cpointer = literal_start_p[i].u.value.base_cp;
       ecma_compiled_code_t *bytecode_literal_p = ECMA_GET_NON_NULL_POINTER (ecma_compiled_code_t,
                                                                             bytecode_cpointer);
 

jerry-core/ecma/operations/ecma-objects-arguments.c

@@ -138,7 +138,7 @@ ecma_op_create_arguments_object (ecma_object_t *func_obj_p, /**< callee function
            indx++)
       {
         // i.
-        if (literal_p[indx].packed_value == MEM_CP_NULL)
+        if (literal_p[indx].u.packed_value == MEM_CP_NULL)
         {
           continue;
         }

jerry-core/ecma/operations/ecma-reference.h

@@ -37,7 +37,7 @@ typedef struct
   ecma_value_t base;
 
   /** referenced name */
-  mem_cpointer_t referenced_name_cp : ECMA_POINTER_FIELD_WIDTH;
+  __extension__ mem_cpointer_t referenced_name_cp : ECMA_POINTER_FIELD_WIDTH;
 
   /** strict reference flag */
   unsigned int is_strict : 1;

jerry-core/jerry-api.h

@@ -118,12 +118,10 @@ typedef struct jerry_api_value_t
 
     uint32_t v_uint32; /**< number converted 32-bit unsigned integer */
 
-    union
-    {
-      jerry_api_string_t *v_string; /**< pointer to a JS string */
-      jerry_api_object_t *v_object; /**< pointer to a JS object */
-    };
-  };
+    jerry_api_string_t *v_string; /**< pointer to a JS string */
+    jerry_api_object_t *v_object; /**< pointer to a JS object */
+
+  } u;
 } jerry_api_value_t;
 
 /**

jerry-core/jerry.c

@@ -205,7 +205,7 @@ jerry_api_value_is_object (const jerry_api_value_t *value_p) /**< pointer to api
 bool
 jerry_api_value_is_function (const jerry_api_value_t *value_p) /**< pointer to api value */
 {
-  return jerry_api_value_is_object (value_p) && jerry_api_is_function (value_p->v_object);
+  return jerry_api_value_is_object (value_p) && jerry_api_is_function (value_p->u.v_object);
 } /* jerry_api_value_is_function */
 
 /**
@@ -217,7 +217,7 @@ bool
 jerry_api_get_boolean_value (const jerry_api_value_t *value_p) /**< pointer to api value */
 {
   JERRY_ASSERT (jerry_api_value_is_boolean (value_p));
-  return value_p->v_bool;
+  return value_p->u.v_bool;
 } /* jerry_api_get_boolean_value */
 
 /**
@@ -237,15 +237,15 @@ jerry_api_get_number_value (const jerry_api_value_t *value_p) /**< pointer to ap
   JERRY_ASSERT (jerry_api_value_is_number (value_p));
   if (value_p->type == JERRY_API_DATA_TYPE_UINT32)
   {
-    return value_p->v_uint32;
+    return value_p->u.v_uint32;
   }
   else if (value_p->type == JERRY_API_DATA_TYPE_FLOAT32)
   {
-    return value_p->v_float32;
+    return value_p->u.v_float32;
   }
   else
   {
-    return value_p->v_float64;
+    return value_p->u.v_float64;
   }
 } /* jerry_api_get_number_value */
 
@@ -258,7 +258,7 @@ jerry_api_string_t *
 jerry_api_get_string_value (const jerry_api_value_t *value_p) /**< pointer to api value */
 {
   JERRY_ASSERT (jerry_api_value_is_string (value_p));
-  return value_p->v_string;
+  return value_p->u.v_string;
 } /* jerry_api_get_string_value */
 
 /**
@@ -270,7 +270,7 @@ jerry_api_object_t *
 jerry_api_get_object_value (const jerry_api_value_t *value_p) /**< pointer to api value */
 {
   JERRY_ASSERT (jerry_api_value_is_object (value_p));
-  return value_p->v_object;
+  return value_p->u.v_object;
 } /* jerry_api_get_object_value */
 
 /**
@@ -318,7 +318,7 @@ jerry_api_create_boolean_value (bool value) /**< bool value from which a jerry_a
 {
   jerry_api_value_t jerry_val;
   jerry_val.type = JERRY_API_DATA_TYPE_BOOLEAN;
-  jerry_val.v_bool = value;
+  jerry_val.u.v_bool = value;
   return jerry_val;
 } /* jerry_api_create_boolean_value */
 
@@ -332,7 +332,7 @@ jerry_api_create_number_value (double value) /**< double value from which a jerr
 {
   jerry_api_value_t jerry_val;
   jerry_val.type = JERRY_API_DATA_TYPE_FLOAT64;
-  jerry_val.v_float64 = value;
+  jerry_val.u.v_float64 = value;
   return jerry_val;
 } /* jerry_api_create_number_value */
 
@@ -345,7 +345,7 @@ jerry_api_create_object_value (jerry_api_object_t *value) /**< jerry_api_object_
 {
   jerry_api_value_t jerry_val;
   jerry_val.type = JERRY_API_DATA_TYPE_OBJECT;
-  jerry_val.v_object = value;
+  jerry_val.u.v_object = value;
   return jerry_val;
 } /* jerry_api_create_object_value */
 
@@ -358,7 +358,7 @@ jerry_api_create_string_value (jerry_api_string_t *value) /**< jerry_api_string_
 {
   jerry_api_value_t jerry_val;
   jerry_val.type = JERRY_API_DATA_TYPE_STRING;
-  jerry_val.v_string = value;
+  jerry_val.u.v_string = value;
   return jerry_val;
 } /* jerry_api_create_string_value */
 
@@ -391,34 +391,34 @@ jerry_api_convert_ecma_value_to_api_value (jerry_api_value_t *out_value_p, /**<
   else if (ecma_is_value_boolean (value))
   {
     out_value_p->type = JERRY_API_DATA_TYPE_BOOLEAN;
-    out_value_p->v_bool = ecma_is_value_true (value);
+    out_value_p->u.v_bool = ecma_is_value_true (value);
   }
   else if (ecma_is_value_number (value))
   {
     ecma_number_t *num = ecma_get_number_from_value (value);
 
 #if CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32
     out_value_p->type = JERRY_API_DATA_TYPE_FLOAT32;
-    out_value_p->v_float32 = *num;
+    out_value_p->u.v_float32 = *num;
 #elif CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT64
     out_value_p->type = JERRY_API_DATA_TYPE_FLOAT64;
-    out_value_p->v_float64 = *num;
+    out_value_p->u.v_float64 = *num;
 #endif /* CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT64 */
   }
   else if (ecma_is_value_string (value))
   {
     ecma_string_t *str = ecma_get_string_from_value (value);
 
     out_value_p->type = JERRY_API_DATA_TYPE_STRING;
-    out_value_p->v_string = ecma_copy_or_ref_ecma_string (str);
+    out_value_p->u.v_string = ecma_copy_or_ref_ecma_string (str);
   }
   else if (ecma_is_value_object (value))
   {
     ecma_object_t *obj = ecma_get_object_from_value (value);
     ecma_ref_object (obj);
 
     out_value_p->type = JERRY_API_DATA_TYPE_OBJECT;
-    out_value_p->v_object = obj;
+    out_value_p->u.v_object = obj;
   }
   else
   {
@@ -453,14 +453,14 @@ jerry_api_convert_api_value_to_ecma_value (ecma_value_t *out_value_p, /**< out:
     }
     case JERRY_API_DATA_TYPE_BOOLEAN:
     {
-      *out_value_p = ecma_make_simple_value (api_value_p->v_bool ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
+      *out_value_p = ecma_make_simple_value (api_value_p->u.v_bool ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
 
       break;
     }
     case JERRY_API_DATA_TYPE_FLOAT32:
     {
       ecma_number_t *num = ecma_alloc_number ();
-      *num = (ecma_number_t) (api_value_p->v_float32);
+      *num = (ecma_number_t) (api_value_p->u.v_float32);
 
       *out_value_p = ecma_make_number_value (num);
 
@@ -469,7 +469,7 @@ jerry_api_convert_api_value_to_ecma_value (ecma_value_t *out_value_p, /**< out:
     case JERRY_API_DATA_TYPE_FLOAT64:
     {
       ecma_number_t *num = ecma_alloc_number ();
-      *num = (ecma_number_t) (api_value_p->v_float64);
+      *num = (ecma_number_t) (api_value_p->u.v_float64);
 
       *out_value_p = ecma_make_number_value (num);
 
@@ -478,23 +478,23 @@ jerry_api_convert_api_value_to_ecma_value (ecma_value_t *out_value_p, /**< out:
     case JERRY_API_DATA_TYPE_UINT32:
     {
       ecma_number_t *num = ecma_alloc_number ();
-      *num = (ecma_number_t) (api_value_p->v_uint32);
+      *num = (ecma_number_t) (api_value_p->u.v_uint32);
 
       *out_value_p = ecma_make_number_value (num);
 
       break;
     }
     case JERRY_API_DATA_TYPE_STRING:
     {
-      ecma_string_t *str_p = ecma_copy_or_ref_ecma_string (api_value_p->v_string);
+      ecma_string_t *str_p = ecma_copy_or_ref_ecma_string (api_value_p->u.v_string);
 
       *out_value_p = ecma_make_string_value (str_p);
 
       break;
     }
     case JERRY_API_DATA_TYPE_OBJECT:
     {
-      ecma_object_t *obj_p = api_value_p->v_object;
+      ecma_object_t *obj_p = api_value_p->u.v_object;
 
       ecma_ref_object (obj_p);
 
@@ -654,11 +654,11 @@ jerry_api_release_value (jerry_api_value_t *value_p) /**< API value */
 
   if (value_p->type == JERRY_API_DATA_TYPE_STRING)
   {
-    jerry_api_release_string (value_p->v_string);
+    jerry_api_release_string (value_p->u.v_string);
   }
   else if (value_p->type == JERRY_API_DATA_TYPE_OBJECT)
   {
-    jerry_api_release_object (value_p->v_object);
+    jerry_api_release_object (value_p->u.v_object);
   }
 } /* jerry_api_release_value */
 
@@ -2040,28 +2040,28 @@ jerry_snapshot_set_offsets (uint8_t *buffer_p, /**< buffer */
       {
         lit_mem_to_snapshot_id_map_entry_t *current_p = lit_map_p;
 
-        if (literal_start_p[i].packed_value != MEM_CP_NULL)
+        if (literal_start_p[i].u.packed_value != MEM_CP_NULL)
         {
-          while (current_p->literal_id.packed_value != literal_start_p[i].packed_value)
+          while (current_p->literal_id.u.packed_value != literal_start_p[i].u.packed_value)
           {
             current_p++;
           }
 
-          literal_start_p[i].packed_value = (uint16_t) current_p->literal_offset;
+          literal_start_p[i].u.packed_value = (uint16_t) current_p->literal_offset;
         }
       }
 
       for (uint32_t i = const_literal_end; i < literal_end; i++)
       {
         compiled_code_map_entry_t *current_p = snapshot_map_entries_p;
 
-        while (current_p->compiled_code_cp != literal_start_p[i].value.base_cp)
+        while (current_p->compiled_code_cp != literal_start_p[i].u.value.base_cp)
         {
           current_p = ECMA_GET_NON_NULL_POINTER (compiled_code_map_entry_t,
                                                  current_p->next_cp);
         }
 
-        literal_start_p[i].packed_value = (uint16_t) current_p->offset;
+        literal_start_p[i].u.packed_value = (uint16_t) current_p->offset;
       }
     }
 
@@ -2315,9 +2315,9 @@ snapshot_load_compiled_code (const uint8_t *snapshot_data_p, /**< snapshot data
   {
     lit_mem_to_snapshot_id_map_entry_t *current_p = lit_map_p;
 
-    if (literal_start_p[i].packed_value != 0)
+    if (literal_start_p[i].u.packed_value != 0)
     {
-      while (current_p->literal_offset != literal_start_p[i].packed_value)
+      while (current_p->literal_offset != literal_start_p[i].u.packed_value)
       {
         current_p++;
       }
@@ -2328,12 +2328,12 @@ snapshot_load_compiled_code (const uint8_t *snapshot_data_p, /**< snapshot data
 
   for (uint32_t i = const_literal_end; i < literal_end; i++)
   {
-    size_t literal_offset = ((size_t) literal_start_p[i].packed_value) << MEM_ALIGNMENT_LOG;
+    size_t literal_offset = ((size_t) literal_start_p[i].u.packed_value) << MEM_ALIGNMENT_LOG;
 
     if (literal_offset == offset)
     {
       /* Self reference */
-      ECMA_SET_NON_NULL_POINTER (literal_start_p[i].value.base_cp,
+      ECMA_SET_NON_NULL_POINTER (literal_start_p[i].u.value.base_cp,
                                  bytecode_p);
     }
     else
@@ -2344,7 +2344,7 @@ snapshot_load_compiled_code (const uint8_t *snapshot_data_p, /**< snapshot data
                                                         lit_map_p,
                                                         copy_bytecode);
 
-      ECMA_SET_NON_NULL_POINTER (literal_start_p[i].value.base_cp,
+      ECMA_SET_NON_NULL_POINTER (literal_start_p[i].u.value.base_cp,
                                  literal_bytecode_p);
     }
   }