Have value::bits_synthetic_pointer return bool

This changes value::bits_synthetic_pointer to return bool and fixes up
some fallout from this.

Reviewed-By: Bruno Larsen <blarsen@redhat.com>

gdb/dwarf2/expr.c

@@ -459,7 +459,7 @@ is_optimized_out_pieced_value (value *v)
 /* An implementation of an lval_funcs method to see whether a value is
    a synthetic pointer.  */
 
-static int
+static bool
 check_pieced_synthetic_pointer (const value *value, LONGEST bit_offset,
 				int bit_length)
 {
@@ -490,10 +490,10 @@ check_pieced_synthetic_pointer (const value *value, LONGEST bit_offset,
 	bit_length -= this_size_bits;
 
       if (p->location != DWARF_VALUE_IMPLICIT_POINTER)
-	return 0;
+	return false;
     }
 
-  return 1;
+  return true;
 }
 
 /* An implementation of an lval_funcs method to indirect through a

gdb/opencl-lang.c

@@ -187,10 +187,10 @@ lval_func_write (struct value *v, struct value *fromval)
     }
 }
 
-/* Return nonzero if bits in V from OFFSET and LENGTH represent a
+/* Return true if bits in V from OFFSET and LENGTH represent a
    synthetic pointer.  */
 
-static int
+static bool
 lval_func_check_synthetic_pointer (const struct value *v,
 				   LONGEST offset, int length)
 {
@@ -208,7 +208,7 @@ lval_func_check_synthetic_pointer (const struct value *v,
     end++;
 
   if (end > c->n)
-    return 0;
+    return false;
 
   for (i = start; i < end; i++)
     {
@@ -217,10 +217,10 @@ lval_func_check_synthetic_pointer (const struct value *v,
 
       if (!c->val->bits_synthetic_pointer (c->indices[i] * elsize + comp_offset,
 					   comp_length))
-	return 0;
+	return false;
     }
 
-  return 1;
+  return true;
 }
 
 static void *

gdb/valprint.c

@@ -566,7 +566,7 @@ generic_val_print_ref (struct type *type,
 {
   struct type *elttype = check_typedef (type->target_type ());
   struct value *deref_val = NULL;
-  const int value_is_synthetic
+  const bool value_is_synthetic
     = original_value->bits_synthetic_pointer (TARGET_CHAR_BIT * embedded_offset,
 					      TARGET_CHAR_BIT * type->length ());
   const int must_coerce_ref = ((options->addressprint && value_is_synthetic)

gdb/value.c

@@ -1316,12 +1316,12 @@ value::mark_bits_optimized_out (LONGEST offset, LONGEST length)
   insert_into_bit_range_vector (&m_optimized_out, offset, length);
 }
 
-int
+bool
 value::bits_synthetic_pointer (LONGEST offset, LONGEST length) const
 {
   if (m_lval != lval_computed
       || !m_location.computed.funcs->check_synthetic_pointer)
-    return 0;
+    return false;
   return m_location.computed.funcs->check_synthetic_pointer (this, offset,
 							     length);
 }

gdb/value.h

@@ -475,7 +475,7 @@ public:
   /* Given a value, determine whether the bits starting at OFFSET and
      extending for LENGTH bits are a synthetic pointer.  */
 
-  int bits_synthetic_pointer (LONGEST offset, LONGEST length) const;
+  bool bits_synthetic_pointer (LONGEST offset, LONGEST length) const;
 
   /* Increase this value's reference count.  */
   void incref ()
@@ -924,8 +924,8 @@ struct lval_funcs
 
   /* If non-NULL, this is used to determine whether the indicated bits
      of VALUE are a synthetic pointer.  */
-  int (*check_synthetic_pointer) (const struct value *value,
-				  LONGEST offset, int length);
+  bool (*check_synthetic_pointer) (const struct value *value,
+				   LONGEST offset, int length);
 
   /* Return a duplicate of VALUE's closure, for use in a new value.
      This may simply return the same closure, if VALUE's is