Fix printing of Wide_Character & Wide_Wide_Character entities.

Wide_Characters and Wide_Wide_Characters are incorrectly printed.
Consider for instance:

    Medium : Wide_Character := Wide_Character'Val(16#dead#);

Trying to print the value of this variable yields:

    (gdb) p medium
    $1 = 57005 '["ad"]'

The integer value is correct (57005 = 0xdead), but the character
representation is not, it should be:

    $1 = 57005 '["dead"]'

Same for Wide_Wide_Characters.

There were two issues:
   (a) The first issue was in ada-valprint, where we were assuming
       that character types were 1 byte long;
   (b) The second problem was in c-valprint, where we were down-casting
       the integer value of the character to type `unsigned char',
       causing use to lose all but the lowest byte.

gdb/ChangeLog:

        * ada-valprint. (ada_printchar): Use the correct type length
        in call to ada_emit_char.
        * c-valprint.c (c_val_print): Remove cast in call to LA_PRINT_CHAR.

1 files changed, 2 insertions, 4 deletions

diff --git a/gdb/c-valprint.c b/gdb/c-valprint.c
index 0c23c7e1eca..c6d3eae0569 100644
--- a/gdb/c-valprint.c
+++ b/gdb/c-valprint.c
@@ -536,9 +536,7 @@ c_val_print (struct type *type, const gdb_byte *valaddr,
 	  if (c_textual_element_type (unresolved_type, options->format))
 	    {
 	      fputs_filtered (" ", stream);
-	      LA_PRINT_CHAR ((unsigned char) unpack_long (type,
-							  valaddr
-							  + embedded_offset),
+	      LA_PRINT_CHAR (unpack_long (type, valaddr + embedded_offset),
 			     unresolved_type, stream);
 	    }
 	}
@@ -561,7 +559,7 @@ c_val_print (struct type *type, const gdb_byte *valaddr,
 	  else
 	    fprintf_filtered (stream, "%d", (int) val);
 	  fputs_filtered (" ", stream);
-	  LA_PRINT_CHAR ((unsigned char) val, unresolved_type, stream);
+	  LA_PRINT_CHAR (val, unresolved_type, stream);
 	}
       break;