gdb/c-valprint.c

   1 /* Support for printing C values for GDB, the GNU debugger.
   2
   3    Copyright (C) 1986-2020 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "symtab.h"
  22 #include "gdbtypes.h"
  23 #include "expression.h"
  24 #include "value.h"
  25 #include "valprint.h"
  26 #include "language.h"
  27 #include "c-lang.h"
  28 #include "cp-abi.h"
  29 #include "target.h"
  30 #include "objfiles.h"
  31 \f
  32
  33 /* A helper for c_textual_element_type.  This checks the name of the
  34    typedef.  This is bogus but it isn't apparent that the compiler
  35    provides us the help we may need.  */
  36
  37 static int
  38 textual_name (const char *name)
  39 {
  40   return (!strcmp (name, "wchar_t")
  41           || !strcmp (name, "char16_t")
  42           || !strcmp (name, "char32_t"));
  43 }
  44
  45 /* Apply a heuristic to decide whether an array of TYPE or a pointer
  46    to TYPE should be printed as a textual string.  Return non-zero if
  47    it should, or zero if it should be treated as an array of integers
  48    or pointer to integers.  FORMAT is the current format letter, or 0
  49    if none.
  50
  51    We guess that "char" is a character.  Explicitly signed and
  52    unsigned character types are also characters.  Integer data from
  53    vector types is not.  The user can override this by using the /s
  54    format letter.  */
  55
  56 int
  57 c_textual_element_type (struct type *type, char format)
  58 {
  59   struct type *true_type, *iter_type;
  60
  61   if (format != 0 && format != 's')
  62     return 0;
  63
  64   /* We also rely on this for its side effect of setting up all the
  65      typedef pointers.  */
  66   true_type = check_typedef (type);
  67
  68   /* TYPE_CODE_CHAR is always textual.  */
  69   if (TYPE_CODE (true_type) == TYPE_CODE_CHAR)
  70     return 1;
  71
  72   /* Any other character-like types must be integral.  */
  73   if (TYPE_CODE (true_type) != TYPE_CODE_INT)
  74     return 0;
  75
  76   /* We peel typedefs one by one, looking for a match.  */
  77   iter_type = type;
  78   while (iter_type)
  79     {
  80       /* Check the name of the type.  */
  81       if (TYPE_NAME (iter_type) && textual_name (TYPE_NAME (iter_type)))
  82         return 1;
  83
  84       if (TYPE_CODE (iter_type) != TYPE_CODE_TYPEDEF)
  85         break;
  86
  87       /* Peel a single typedef.  If the typedef doesn't have a target
  88          type, we use check_typedef and hope the result is ok -- it
  89          might be for C++, where wchar_t is a built-in type.  */
  90       if (TYPE_TARGET_TYPE (iter_type))
  91         iter_type = TYPE_TARGET_TYPE (iter_type);
  92       else
  93         iter_type = check_typedef (iter_type);
  94     }
  95
  96   if (format == 's')
  97     {
  98       /* Print this as a string if we can manage it.  For now, no wide
  99          character support.  */
 100       if (TYPE_CODE (true_type) == TYPE_CODE_INT
 101           && TYPE_LENGTH (true_type) == 1)
 102         return 1;
 103     }
 104   else
 105     {
 106       /* If a one-byte TYPE_CODE_INT is missing the not-a-character
 107          flag, then we treat it as text; otherwise, we assume it's
 108          being used as data.  */
 109       if (TYPE_CODE (true_type) == TYPE_CODE_INT
 110           && TYPE_LENGTH (true_type) == 1
 111           && !TYPE_NOTTEXT (true_type))
 112         return 1;
 113     }
 114
 115   return 0;
 116 }
 117
 118 /* Decorations for C.  */
 119
 120 static const struct generic_val_print_decorations c_decorations =
 121 {
 122   "",
 123   " + ",
 124   " * I",
 125   "true",
 126   "false",
 127   "void",
 128   "{",
 129   "}"
 130 };
 131
 132 /* Print a pointer based on the type of its target.
 133
 134    Arguments to this functions are roughly the same as those in c_val_print.
 135    A difference is that ADDRESS is the address to print, with embedded_offset
 136    already added.  UNRESOLVED_ELTTYPE and ELTTYPE represent the pointed type,
 137    respectively before and after check_typedef.  */
 138
 139 static void
 140 print_unpacked_pointer (struct type *type, struct type *elttype,
 141                         struct type *unresolved_elttype,
 142                         const gdb_byte *valaddr, int embedded_offset,
 143                         CORE_ADDR address, struct ui_file *stream, int recurse,
 144                         const struct value_print_options *options)
 145 {
 146   int want_space = 0;
 147   struct gdbarch *gdbarch = get_type_arch (type);
 148
 149   if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
 150     {
 151       /* Try to print what function it points to.  */
 152       print_function_pointer_address (options, gdbarch, address, stream);
 153       return;
 154     }
 155
 156   if (options->symbol_print)
 157     want_space = print_address_demangle (options, gdbarch, address, stream,
 158                                          demangle);
 159   else if (options->addressprint)
 160     {
 161       fputs_filtered (paddress (gdbarch, address), stream);
 162       want_space = 1;
 163     }
 164
 165   /* For a pointer to a textual type, also print the string
 166      pointed to, unless pointer is null.  */
 167
 168   if (c_textual_element_type (unresolved_elttype, options->format)
 169       && address != 0)
 170     {
 171       if (want_space)
 172         fputs_filtered (" ", stream);
 173       val_print_string (unresolved_elttype, NULL, address, -1, stream, options);
 174     }
 175   else if (cp_is_vtbl_member (type))
 176     {
 177       /* Print vtbl's nicely.  */
 178       CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset);
 179       struct bound_minimal_symbol msymbol =
 180         lookup_minimal_symbol_by_pc (vt_address);
 181
 182       /* If 'symbol_print' is set, we did the work above.  */
 183       if (!options->symbol_print
 184           && (msymbol.minsym != NULL)
 185           && (vt_address == BMSYMBOL_VALUE_ADDRESS (msymbol)))
 186         {
 187           if (want_space)
 188             fputs_filtered (" ", stream);
 189           fputs_filtered (" <", stream);
 190           fputs_filtered (msymbol.minsym->print_name (), stream);
 191           fputs_filtered (">", stream);
 192           want_space = 1;
 193         }
 194
 195       if (vt_address && options->vtblprint)
 196         {
 197           struct value *vt_val;
 198           struct symbol *wsym = NULL;
 199           struct type *wtype;
 200
 201           if (want_space)
 202             fputs_filtered (" ", stream);
 203
 204           if (msymbol.minsym != NULL)
 205             {
 206               const char *search_name = msymbol.minsym->search_name ();
 207               wsym = lookup_symbol_search_name (search_name, NULL,
 208                                                 VAR_DOMAIN).symbol;
 209             }
 210
 211           if (wsym)
 212             {
 213               wtype = SYMBOL_TYPE (wsym);
 214             }
 215           else
 216             {
 217               wtype = unresolved_elttype;
 218             }
 219           vt_val = value_at (wtype, vt_address);
 220           common_val_print (vt_val, stream, recurse + 1, options,
 221                             current_language);
 222           if (options->prettyformat)
 223             {
 224               fprintf_filtered (stream, "\n");
 225               print_spaces_filtered (2 + 2 * recurse, stream);
 226             }
 227         }
 228     }
 229 }
 230
 231 /* c_val_print helper for TYPE_CODE_ARRAY.  */
 232
 233 static void
 234 c_val_print_array (struct type *type, const gdb_byte *valaddr,
 235                    int embedded_offset, CORE_ADDR address,
 236                    struct ui_file *stream, int recurse,
 237                    struct value *original_value,
 238                    const struct value_print_options *options)
 239 {
 240   struct type *unresolved_elttype = TYPE_TARGET_TYPE (type);
 241   struct type *elttype = check_typedef (unresolved_elttype);
 242   struct gdbarch *arch = get_type_arch (type);
 243   int unit_size = gdbarch_addressable_memory_unit_size (arch);
 244
 245   if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0)
 246     {
 247       LONGEST low_bound, high_bound;
 248       int eltlen, len;
 249       enum bfd_endian byte_order = type_byte_order (type);
 250       unsigned int i = 0;       /* Number of characters printed.  */
 251
 252       if (!get_array_bounds (type, &low_bound, &high_bound))
 253         error (_("Could not determine the array high bound"));
 254
 255       eltlen = TYPE_LENGTH (elttype);
 256       len = high_bound - low_bound + 1;
 257       if (options->prettyformat_arrays)
 258         {
 259           print_spaces_filtered (2 + 2 * recurse, stream);
 260         }
 261
 262       /* Print arrays of textual chars with a string syntax, as
 263          long as the entire array is valid.  */
 264       if (c_textual_element_type (unresolved_elttype,
 265                                   options->format)
 266           && value_bytes_available (original_value, embedded_offset,
 267                                     TYPE_LENGTH (type))
 268           && !value_bits_any_optimized_out (original_value,
 269                                             TARGET_CHAR_BIT * embedded_offset,
 270                                             TARGET_CHAR_BIT * TYPE_LENGTH (type)))
 271         {
 272           int force_ellipses = 0;
 273
 274           /* If requested, look for the first null char and only
 275              print elements up to it.  */
 276           if (options->stop_print_at_null)
 277             {
 278               unsigned int temp_len;
 279
 280               for (temp_len = 0;
 281                    (temp_len < len
 282                     && temp_len < options->print_max
 283                     && extract_unsigned_integer (valaddr
 284                                                  + embedded_offset * unit_size
 285                                                  + temp_len * eltlen,
 286                                                  eltlen, byte_order) != 0);
 287                    ++temp_len)
 288                 ;
 289
 290               /* Force LA_PRINT_STRING to print ellipses if
 291                  we've printed the maximum characters and
 292                  the next character is not \000.  */
 293               if (temp_len == options->print_max && temp_len < len)
 294                 {
 295                   ULONGEST val
 296                     = extract_unsigned_integer (valaddr
 297                                                 + embedded_offset * unit_size
 298                                                 + temp_len * eltlen,
 299                                                 eltlen, byte_order);
 300                   if (val != 0)
 301                     force_ellipses = 1;
 302                 }
 303
 304               len = temp_len;
 305             }
 306
 307           LA_PRINT_STRING (stream, unresolved_elttype,
 308                            valaddr + embedded_offset * unit_size, len,
 309                            NULL, force_ellipses, options);
 310           i = len;
 311         }
 312       else
 313         {
 314           fprintf_filtered (stream, "{");
 315           /* If this is a virtual function table, print the 0th
 316              entry specially, and the rest of the members
 317              normally.  */
 318           if (cp_is_vtbl_ptr_type (elttype))
 319             {
 320               i = 1;
 321               fprintf_filtered (stream, _("%d vtable entries"),
 322                                 len - 1);
 323             }
 324           else
 325             {
 326               i = 0;
 327             }
 328           val_print_array_elements (type, embedded_offset,
 329                                     address, stream,
 330                                     recurse, original_value, options, i);
 331           fprintf_filtered (stream, "}");
 332         }
 333     }
 334   else
 335     {
 336       /* Array of unspecified length: treat like pointer to first elt.  */
 337       print_unpacked_pointer (type, elttype, unresolved_elttype, valaddr,
 338                               embedded_offset, address + embedded_offset,
 339                               stream, recurse, options);
 340     }
 341 }
 342
 343 /* c_val_print helper for TYPE_CODE_PTR.  */
 344
 345 static void
 346 c_val_print_ptr (struct type *type, const gdb_byte *valaddr,
 347                  int embedded_offset, struct ui_file *stream, int recurse,
 348                  struct value *original_value,
 349                  const struct value_print_options *options)
 350 {
 351   struct gdbarch *arch = get_type_arch (type);
 352   int unit_size = gdbarch_addressable_memory_unit_size (arch);
 353
 354   if (options->format && options->format != 's')
 355     {
 356       val_print_scalar_formatted (type, embedded_offset,
 357                                   original_value, options, 0, stream);
 358     }
 359   else if (options->vtblprint && cp_is_vtbl_ptr_type (type))
 360     {
 361       /* Print the unmangled name if desired.  */
 362       /* Print vtable entry - we only get here if we ARE using
 363          -fvtable_thunks.  (Otherwise, look under
 364          TYPE_CODE_STRUCT.)  */
 365       CORE_ADDR addr
 366         = extract_typed_address (valaddr + embedded_offset, type);
 367       struct gdbarch *gdbarch = get_type_arch (type);
 368
 369       print_function_pointer_address (options, gdbarch, addr, stream);
 370     }
 371   else
 372     {
 373       struct type *unresolved_elttype = TYPE_TARGET_TYPE (type);
 374       struct type *elttype = check_typedef (unresolved_elttype);
 375       CORE_ADDR addr = unpack_pointer (type,
 376                                        valaddr + embedded_offset * unit_size);
 377
 378       print_unpacked_pointer (type, elttype, unresolved_elttype, valaddr,
 379                               embedded_offset, addr, stream, recurse, options);
 380     }
 381 }
 382
 383 /* c_val_print helper for TYPE_CODE_STRUCT.  */
 384
 385 static void
 386 c_val_print_struct (struct type *type, const gdb_byte *valaddr,
 387                     int embedded_offset, CORE_ADDR address,
 388                     struct ui_file *stream, int recurse,
 389                     struct value *original_value,
 390                     const struct value_print_options *options)
 391 {
 392   if (options->vtblprint && cp_is_vtbl_ptr_type (type))
 393     {
 394       /* Print the unmangled name if desired.  */
 395       /* Print vtable entry - we only get here if NOT using
 396          -fvtable_thunks.  (Otherwise, look under
 397          TYPE_CODE_PTR.)  */
 398       struct gdbarch *gdbarch = get_type_arch (type);
 399       int offset = (embedded_offset
 400                     + TYPE_FIELD_BITPOS (type,
 401                                          VTBL_FNADDR_OFFSET) / 8);
 402       struct type *field_type = TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET);
 403       CORE_ADDR addr = extract_typed_address (valaddr + offset, field_type);
 404
 405       print_function_pointer_address (options, gdbarch, addr, stream);
 406     }
 407   else
 408     cp_print_value_fields_rtti (type, valaddr,
 409                                 embedded_offset, address,
 410                                 stream, recurse,
 411                                 original_value, options,
 412                                 NULL, 0);
 413 }
 414
 415 /* c_val_print helper for TYPE_CODE_UNION.  */
 416
 417 static void
 418 c_val_print_union (struct type *type, const gdb_byte *valaddr,
 419                    int embedded_offset, CORE_ADDR address,
 420                    struct ui_file *stream, int recurse,
 421                    struct value *original_value,
 422                    const struct value_print_options *options)
 423 {
 424   if (recurse && !options->unionprint)
 425     {
 426       fprintf_filtered (stream, "{...}");
 427      }
 428   else
 429     {
 430       c_val_print_struct (type, valaddr, embedded_offset, address, stream,
 431                           recurse, original_value, options);
 432     }
 433 }
 434
 435 /* c_val_print helper for TYPE_CODE_INT.  */
 436
 437 static void
 438 c_val_print_int (struct type *type, struct type *unresolved_type,
 439                  const gdb_byte *valaddr, int embedded_offset,
 440                  struct ui_file *stream, struct value *original_value,
 441                  const struct value_print_options *options)
 442 {
 443   struct gdbarch *arch = get_type_arch (type);
 444   int unit_size = gdbarch_addressable_memory_unit_size (arch);
 445
 446   if (options->format || options->output_format)
 447     {
 448       struct value_print_options opts = *options;
 449
 450       opts.format = (options->format ? options->format
 451                      : options->output_format);
 452       val_print_scalar_formatted (type, embedded_offset,
 453                                   original_value, &opts, 0, stream);
 454     }
 455   else
 456     {
 457       val_print_scalar_formatted (type, embedded_offset,
 458                                   original_value, options, 0, stream);
 459       /* C and C++ has no single byte int type, char is used
 460          instead.  Since we don't know whether the value is really
 461          intended to be used as an integer or a character, print
 462          the character equivalent as well.  */
 463       if (c_textual_element_type (unresolved_type, options->format))
 464         {
 465           fputs_filtered (" ", stream);
 466           LA_PRINT_CHAR (unpack_long (type,
 467                                       valaddr + embedded_offset * unit_size),
 468                          unresolved_type, stream);
 469         }
 470     }
 471 }
 472
 473 /* c_val_print helper for TYPE_CODE_MEMBERPTR.  */
 474
 475 static void
 476 c_val_print_memberptr (struct type *type, const gdb_byte *valaddr,
 477                        int embedded_offset, CORE_ADDR address,
 478                        struct ui_file *stream, int recurse,
 479                        struct value *original_value,
 480                        const struct value_print_options *options)
 481 {
 482   if (!options->format)
 483     {
 484       cp_print_class_member (valaddr + embedded_offset, type, stream, "&");
 485     }
 486   else
 487     {
 488       generic_val_print (type, embedded_offset, address, stream,
 489                          recurse, original_value, options, &c_decorations);
 490     }
 491 }
 492
 493 /* See val_print for a description of the various parameters of this
 494    function; they are identical.  */
 495
 496 void
 497 c_val_print (struct type *type,
 498              int embedded_offset, CORE_ADDR address,
 499              struct ui_file *stream, int recurse,
 500              struct value *original_value,
 501              const struct value_print_options *options)
 502 {
 503   struct type *unresolved_type = type;
 504   const gdb_byte *valaddr = value_contents_for_printing (original_value);
 505
 506   type = check_typedef (type);
 507   switch (TYPE_CODE (type))
 508     {
 509     case TYPE_CODE_ARRAY:
 510       c_val_print_array (type, valaddr, embedded_offset, address, stream,
 511                          recurse, original_value, options);
 512       break;
 513
 514     case TYPE_CODE_METHODPTR:
 515       cplus_print_method_ptr (valaddr + embedded_offset, type, stream);
 516       break;
 517
 518     case TYPE_CODE_PTR:
 519       c_val_print_ptr (type, valaddr, embedded_offset, stream, recurse,
 520                        original_value, options);
 521       break;
 522
 523     case TYPE_CODE_UNION:
 524       c_val_print_union (type, valaddr, embedded_offset, address, stream,
 525                          recurse, original_value, options);
 526       break;
 527
 528     case TYPE_CODE_STRUCT:
 529       c_val_print_struct (type, valaddr, embedded_offset, address, stream,
 530                           recurse, original_value, options);
 531       break;
 532
 533     case TYPE_CODE_INT:
 534       c_val_print_int (type, unresolved_type, valaddr, embedded_offset, stream,
 535                        original_value, options);
 536       break;
 537
 538     case TYPE_CODE_MEMBERPTR:
 539       c_val_print_memberptr (type, valaddr, embedded_offset, address, stream,
 540                              recurse, original_value, options);
 541       break;
 542
 543     case TYPE_CODE_REF:
 544     case TYPE_CODE_RVALUE_REF:
 545     case TYPE_CODE_ENUM:
 546     case TYPE_CODE_FLAGS:
 547     case TYPE_CODE_FUNC:
 548     case TYPE_CODE_METHOD:
 549     case TYPE_CODE_BOOL:
 550     case TYPE_CODE_RANGE:
 551     case TYPE_CODE_FLT:
 552     case TYPE_CODE_DECFLOAT:
 553     case TYPE_CODE_VOID:
 554     case TYPE_CODE_ERROR:
 555     case TYPE_CODE_UNDEF:
 556     case TYPE_CODE_COMPLEX:
 557     case TYPE_CODE_CHAR:
 558     default:
 559       generic_val_print (type, embedded_offset, address,
 560                          stream, recurse, original_value, options,
 561                          &c_decorations);
 562       break;
 563     }
 564 }
 565 \f
 566 void
 567 c_value_print (struct value *val, struct ui_file *stream,
 568                const struct value_print_options *options)
 569 {
 570   struct type *type, *real_type;
 571   int full, using_enc;
 572   LONGEST top;
 573   struct value_print_options opts = *options;
 574
 575   opts.deref_ref = 1;
 576
 577   /* If it is a pointer, indicate what it points to.
 578
 579      Print type also if it is a reference.
 580
 581      C++: if it is a member pointer, we will take care
 582      of that when we print it.  */
 583
 584   type = check_typedef (value_type (val));
 585
 586   if (TYPE_CODE (type) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (type))
 587     {
 588       struct type *original_type = value_type (val);
 589
 590       /* Hack:  remove (char *) for char strings.  Their
 591          type is indicated by the quoted string anyway.
 592          (Don't use c_textual_element_type here; quoted strings
 593          are always exactly (char *), (wchar_t *), or the like.  */
 594       if (TYPE_CODE (original_type) == TYPE_CODE_PTR
 595           && TYPE_NAME (original_type) == NULL
 596           && TYPE_NAME (TYPE_TARGET_TYPE (original_type)) != NULL
 597           && (strcmp (TYPE_NAME (TYPE_TARGET_TYPE (original_type)),
 598                       "char") == 0
 599               || textual_name (TYPE_NAME (TYPE_TARGET_TYPE (original_type)))))
 600         {
 601           /* Print nothing.  */
 602         }
 603       else if (options->objectprint
 604                && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT))
 605         {
 606           int is_ref = TYPE_IS_REFERENCE (type);
 607           enum type_code refcode = TYPE_CODE_UNDEF;
 608
 609           if (is_ref)
 610             {
 611               val = value_addr (val);
 612               refcode = TYPE_CODE (type);
 613             }
 614
 615           /* Pointer to class, check real type of object.  */
 616           fprintf_filtered (stream, "(");
 617
 618           if (value_entirely_available (val))
 619             {
 620               real_type = value_rtti_indirect_type (val, &full, &top,
 621                                                     &using_enc);
 622               if (real_type)
 623                 {
 624                   /* RTTI entry found.  */
 625
 626                   /* Need to adjust pointer value.  */
 627                   val = value_from_pointer (real_type,
 628                                             value_as_address (val) - top);
 629
 630                   /* Note: When we look up RTTI entries, we don't get
 631                      any information on const or volatile
 632                      attributes.  */
 633                 }
 634             }
 635
 636           if (is_ref)
 637             val = value_ref (value_ind (val), refcode);
 638
 639           type = value_type (val);
 640           type_print (type, "", stream, -1);
 641           fprintf_filtered (stream, ") ");
 642         }
 643       else
 644         {
 645           /* normal case */
 646           fprintf_filtered (stream, "(");
 647           type_print (value_type (val), "", stream, -1);
 648           fprintf_filtered (stream, ") ");
 649         }
 650     }
 651
 652   if (!value_initialized (val))
 653     fprintf_filtered (stream, " [uninitialized] ");
 654
 655   if (options->objectprint && (TYPE_CODE (type) == TYPE_CODE_STRUCT))
 656     {
 657       /* Attempt to determine real type of object.  */
 658       real_type = value_rtti_type (val, &full, &top, &using_enc);
 659       if (real_type)
 660         {
 661           /* We have RTTI information, so use it.  */
 662           val = value_full_object (val, real_type,
 663                                    full, top, using_enc);
 664           /* In a destructor we might see a real type that is a
 665              superclass of the object's type.  In this case it is
 666              better to leave the object as-is.  */
 667           if (!(full
 668                 && (TYPE_LENGTH (real_type)
 669                     < TYPE_LENGTH (value_enclosing_type (val)))))
 670             val = value_cast (real_type, val);
 671           fprintf_filtered (stream, "(%s%s) ",
 672                             TYPE_NAME (real_type),
 673                             full ? "" : _(" [incomplete object]"));
 674         }
 675       else if (type != check_typedef (value_enclosing_type (val)))
 676         {
 677           /* No RTTI information, so let's do our best.  */
 678           fprintf_filtered (stream, "(%s ?) ",
 679                             TYPE_NAME (value_enclosing_type (val)));
 680           val = value_cast (value_enclosing_type (val), val);
 681         }
 682     }
 683
 684   common_val_print (val, stream, 0, &opts, current_language);
 685 }