btrace: Remove struct btrace_thread_info::{begin,end}.

[deliverable/binutils-gdb.git] / gdb / gdbtypes.c

diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
index defc00d34e54110f3709d6177b2c11dacbb0dd8b..c9a9b3d9f835520b6232766b2158d53a80c0e2ff 100644 (file)
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -51,6 +51,7 @@ const struct rank EXACT_MATCH_BADNESS = {0,0};
 const struct rank INTEGER_PROMOTION_BADNESS = {1,0};
 const struct rank FLOAT_PROMOTION_BADNESS = {1,0};
 const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0};
+const struct rank CV_CONVERSION_BADNESS = {1, 0};
 const struct rank INTEGER_CONVERSION_BADNESS = {2,0};
 const struct rank FLOAT_CONVERSION_BADNESS = {2,0};
 const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0};
@@ -3611,15 +3612,59 @@ rank_one_type (struct type *parm, struct type *arg, struct value *value)
 {
   struct rank rank = {0,0};
 
-  if (types_equal (parm, arg))
-    return EXACT_MATCH_BADNESS;
-
   /* Resolve typedefs */
   if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF)
     parm = check_typedef (parm);
   if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
     arg = check_typedef (arg);
 
+  if (TYPE_IS_REFERENCE (parm) && value != NULL)
+    {
+      if (VALUE_LVAL (value) == not_lval)
+       {
+         /* Rvalues should preferably bind to rvalue references or const
+            lvalue references.  */
+         if (TYPE_CODE (parm) == TYPE_CODE_RVALUE_REF)
+           rank.subrank = REFERENCE_CONVERSION_RVALUE;
+         else if (TYPE_CONST (TYPE_TARGET_TYPE (parm)))
+           rank.subrank = REFERENCE_CONVERSION_CONST_LVALUE;
+         else
+           return INCOMPATIBLE_TYPE_BADNESS;
+         return sum_ranks (rank, REFERENCE_CONVERSION_BADNESS);
+       }
+      else
+       {
+         /* Lvalues should prefer lvalue overloads.  */
+         if (TYPE_CODE (parm) == TYPE_CODE_RVALUE_REF)
+           {
+             rank.subrank = REFERENCE_CONVERSION_RVALUE;
+             return sum_ranks (rank, REFERENCE_CONVERSION_BADNESS);
+           }
+       }
+    }
+
+  if (types_equal (parm, arg))
+    {
+      struct type *t1 = parm;
+      struct type *t2 = arg;
+
+      /* For pointers and references, compare target type.  */
+      if (TYPE_CODE (parm) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (parm))
+       {
+         t1 = TYPE_TARGET_TYPE (parm);
+         t2 = TYPE_TARGET_TYPE (arg);
+       }
+
+      /* Make sure they are CV equal, too.  */
+      if (TYPE_CONST (t1) != TYPE_CONST (t2))
+       rank.subrank |= CV_CONVERSION_CONST;
+      if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2))
+       rank.subrank |= CV_CONVERSION_VOLATILE;
+      if (rank.subrank != 0)
+       return sum_ranks (CV_CONVERSION_BADNESS, rank);
+      return EXACT_MATCH_BADNESS;
+    }
+
   /* See through references, since we can almost make non-references
      references.  */
 
@@ -3659,10 +3704,23 @@ rank_one_type (struct type *parm, struct type *arg, struct value *value)
 
          return INCOMPATIBLE_TYPE_BADNESS;
        case TYPE_CODE_ARRAY:
-         if (types_equal (TYPE_TARGET_TYPE (parm),
-                          TYPE_TARGET_TYPE (arg)))
-           return EXACT_MATCH_BADNESS;
-         return INCOMPATIBLE_TYPE_BADNESS;
+         {
+           struct type *t1 = TYPE_TARGET_TYPE (parm);
+           struct type *t2 = TYPE_TARGET_TYPE (arg);
+
+           if (types_equal (t1, t2))
+             {
+               /* Make sure they are CV equal.  */
+               if (TYPE_CONST (t1) != TYPE_CONST (t2))
+                 rank.subrank |= CV_CONVERSION_CONST;
+               if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2))
+                 rank.subrank |= CV_CONVERSION_VOLATILE;
+               if (rank.subrank != 0)
+                 return sum_ranks (CV_CONVERSION_BADNESS, rank);
+               return EXACT_MATCH_BADNESS;
+             }
+           return INCOMPATIBLE_TYPE_BADNESS;
+         }
        case TYPE_CODE_FUNC:
          return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL);
        case TYPE_CODE_INT:
@@ -5152,10 +5210,12 @@ gdbtypes_post_init (struct gdbarch *gdbarch)
 
   /* Wide character types.  */
   builtin_type->builtin_char16
-    = arch_integer_type (gdbarch, 16, 0, "char16_t");
+    = arch_integer_type (gdbarch, 16, 1, "char16_t");
   builtin_type->builtin_char32
-    = arch_integer_type (gdbarch, 32, 0, "char32_t");
-       
+    = arch_integer_type (gdbarch, 32, 1, "char32_t");
+  builtin_type->builtin_wchar
+    = arch_integer_type (gdbarch, gdbarch_wchar_bit (gdbarch),
+                        !gdbarch_wchar_signed (gdbarch), "wchar_t");
 
   /* Default data/code pointer types.  */
   builtin_type->builtin_data_ptr