gdb/c-lang.c

   1 /* C language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003,
   4    2004, 2005, 2007, 2008 Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #include "defs.h"
  22 #include "symtab.h"
  23 #include "gdbtypes.h"
  24 #include "expression.h"
  25 #include "parser-defs.h"
  26 #include "language.h"
  27 #include "c-lang.h"
  28 #include "valprint.h"
  29 #include "macroscope.h"
  30 #include "gdb_assert.h"
  31 #include "charset.h"
  32 #include "gdb_string.h"
  33 #include "demangle.h"
  34 #include "cp-abi.h"
  35 #include "cp-support.h"
  36
  37 extern void _initialize_c_language (void);
  38 static void c_emit_char (int c, struct ui_file * stream, int quoter);
  39
  40 /* Print the character C on STREAM as part of the contents of a literal
  41    string whose delimiter is QUOTER.  Note that that format for printing
  42    characters and strings is language specific. */
  43
  44 static void
  45 c_emit_char (int c, struct ui_file *stream, int quoter)
  46 {
  47   const char *escape;
  48   int host_char;
  49
  50   c &= 0xFF;                    /* Avoid sign bit follies */
  51
  52   escape = c_target_char_has_backslash_escape (c);
  53   if (escape)
  54     {
  55       if (quoter == '"' && strcmp (escape, "0") == 0)
  56         /* Print nulls embedded in double quoted strings as \000 to
  57            prevent ambiguity.  */
  58         fprintf_filtered (stream, "\\000");
  59       else
  60         fprintf_filtered (stream, "\\%s", escape);
  61     }
  62   else if (target_char_to_host (c, &host_char)
  63            && host_char_print_literally (host_char))
  64     {
  65       if (host_char == '\\' || host_char == quoter)
  66         fputs_filtered ("\\", stream);
  67       fprintf_filtered (stream, "%c", host_char);
  68     }
  69   else
  70     fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
  71 }
  72
  73 void
  74 c_printchar (int c, struct ui_file *stream)
  75 {
  76   fputc_filtered ('\'', stream);
  77   LA_EMIT_CHAR (c, stream, '\'');
  78   fputc_filtered ('\'', stream);
  79 }
  80
  81 /* Print the character string STRING, printing at most LENGTH characters.
  82    LENGTH is -1 if the string is nul terminated.  Each character is WIDTH bytes
  83    long.  Printing stops early if the number hits print_max; repeat counts are
  84    printed as appropriate.  Print ellipses at the end if we had to stop before
  85    printing LENGTH characters, or if FORCE_ELLIPSES.  */
  86
  87 void
  88 c_printstr (struct ui_file *stream, const gdb_byte *string,
  89             unsigned int length, int width, int force_ellipses)
  90 {
  91   unsigned int i;
  92   unsigned int things_printed = 0;
  93   int in_quotes = 0;
  94   int need_comma = 0;
  95
  96   /* If the string was not truncated due to `set print elements', and
  97      the last byte of it is a null, we don't print that, in traditional C
  98      style.  */
  99   if (!force_ellipses
 100       && length > 0
 101       && (extract_unsigned_integer (string + (length - 1) * width, width)
 102           == '\0'))
 103     length--;
 104
 105   if (length == 0)
 106     {
 107       fputs_filtered ("\"\"", stream);
 108       return;
 109     }
 110
 111   for (i = 0; i < length && things_printed < print_max; ++i)
 112     {
 113       /* Position of the character we are examining
 114          to see whether it is repeated.  */
 115       unsigned int rep1;
 116       /* Number of repetitions we have detected so far.  */
 117       unsigned int reps;
 118       unsigned long current_char;
 119
 120       QUIT;
 121
 122       if (need_comma)
 123         {
 124           fputs_filtered (", ", stream);
 125           need_comma = 0;
 126         }
 127
 128       current_char = extract_unsigned_integer (string + i * width, width);
 129
 130       rep1 = i + 1;
 131       reps = 1;
 132       while (rep1 < length
 133              && extract_unsigned_integer (string + rep1 * width, width)
 134              == current_char)
 135         {
 136           ++rep1;
 137           ++reps;
 138         }
 139
 140       if (reps > repeat_count_threshold)
 141         {
 142           if (in_quotes)
 143             {
 144               if (inspect_it)
 145                 fputs_filtered ("\\\", ", stream);
 146               else
 147                 fputs_filtered ("\", ", stream);
 148               in_quotes = 0;
 149             }
 150           LA_PRINT_CHAR (current_char, stream);
 151           fprintf_filtered (stream, _(" <repeats %u times>"), reps);
 152           i = rep1 - 1;
 153           things_printed += repeat_count_threshold;
 154           need_comma = 1;
 155         }
 156       else
 157         {
 158           if (!in_quotes)
 159             {
 160               if (inspect_it)
 161                 fputs_filtered ("\\\"", stream);
 162               else
 163                 fputs_filtered ("\"", stream);
 164               in_quotes = 1;
 165             }
 166           LA_EMIT_CHAR (current_char, stream, '"');
 167           ++things_printed;
 168         }
 169     }
 170
 171   /* Terminate the quotes if necessary.  */
 172   if (in_quotes)
 173     {
 174       if (inspect_it)
 175         fputs_filtered ("\\\"", stream);
 176       else
 177         fputs_filtered ("\"", stream);
 178     }
 179
 180   if (force_ellipses || i < length)
 181     fputs_filtered ("...", stream);
 182 }
 183 \f
 184 /* Preprocessing and parsing C and C++ expressions.  */
 185
 186
 187 /* When we find that lexptr (the global var defined in parse.c) is
 188    pointing at a macro invocation, we expand the invocation, and call
 189    scan_macro_expansion to save the old lexptr here and point lexptr
 190    into the expanded text.  When we reach the end of that, we call
 191    end_macro_expansion to pop back to the value we saved here.  The
 192    macro expansion code promises to return only fully-expanded text,
 193    so we don't need to "push" more than one level.
 194
 195    This is disgusting, of course.  It would be cleaner to do all macro
 196    expansion beforehand, and then hand that to lexptr.  But we don't
 197    really know where the expression ends.  Remember, in a command like
 198
 199      (gdb) break *ADDRESS if CONDITION
 200
 201    we evaluate ADDRESS in the scope of the current frame, but we
 202    evaluate CONDITION in the scope of the breakpoint's location.  So
 203    it's simply wrong to try to macro-expand the whole thing at once.  */
 204 static char *macro_original_text;
 205 static char *macro_expanded_text;
 206
 207
 208 void
 209 scan_macro_expansion (char *expansion)
 210 {
 211   /* We'd better not be trying to push the stack twice.  */
 212   gdb_assert (! macro_original_text);
 213   gdb_assert (! macro_expanded_text);
 214
 215   /* Save the old lexptr value, so we can return to it when we're done
 216      parsing the expanded text.  */
 217   macro_original_text = lexptr;
 218   lexptr = expansion;
 219
 220   /* Save the expanded text, so we can free it when we're finished.  */
 221   macro_expanded_text = expansion;
 222 }
 223
 224
 225 int
 226 scanning_macro_expansion (void)
 227 {
 228   return macro_original_text != 0;
 229 }
 230
 231
 232 void
 233 finished_macro_expansion (void)
 234 {
 235   /* There'd better be something to pop back to, and we better have
 236      saved a pointer to the start of the expanded text.  */
 237   gdb_assert (macro_original_text);
 238   gdb_assert (macro_expanded_text);
 239
 240   /* Pop back to the original text.  */
 241   lexptr = macro_original_text;
 242   macro_original_text = 0;
 243
 244   /* Free the expanded text.  */
 245   xfree (macro_expanded_text);
 246   macro_expanded_text = 0;
 247 }
 248
 249
 250 static void
 251 scan_macro_cleanup (void *dummy)
 252 {
 253   if (macro_original_text)
 254     finished_macro_expansion ();
 255 }
 256
 257
 258 /* We set these global variables before calling c_parse, to tell it
 259    how it to find macro definitions for the expression at hand.  */
 260 macro_lookup_ftype *expression_macro_lookup_func;
 261 void *expression_macro_lookup_baton;
 262
 263
 264 static int
 265 c_preprocess_and_parse (void)
 266 {
 267   /* Set up a lookup function for the macro expander.  */
 268   struct macro_scope *scope = 0;
 269   struct cleanup *back_to = make_cleanup (free_current_contents, &scope);
 270
 271   if (expression_context_block)
 272     scope = sal_macro_scope (find_pc_line (expression_context_pc, 0));
 273   else
 274     scope = default_macro_scope ();
 275   if (! scope)
 276     scope = user_macro_scope ();
 277
 278   expression_macro_lookup_func = standard_macro_lookup;
 279   expression_macro_lookup_baton = (void *) scope;
 280
 281   gdb_assert (! macro_original_text);
 282   make_cleanup (scan_macro_cleanup, 0);
 283
 284   {
 285     int result = c_parse ();
 286     do_cleanups (back_to);
 287     return result;
 288   }
 289 }
 290
 291
 292 \f
 293 /* Table mapping opcodes into strings for printing operators
 294    and precedences of the operators.  */
 295
 296 const struct op_print c_op_print_tab[] =
 297 {
 298   {",", BINOP_COMMA, PREC_COMMA, 0},
 299   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
 300   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
 301   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
 302   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
 303   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
 304   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
 305   {"==", BINOP_EQUAL, PREC_EQUAL, 0},
 306   {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
 307   {"<=", BINOP_LEQ, PREC_ORDER, 0},
 308   {">=", BINOP_GEQ, PREC_ORDER, 0},
 309   {">", BINOP_GTR, PREC_ORDER, 0},
 310   {"<", BINOP_LESS, PREC_ORDER, 0},
 311   {">>", BINOP_RSH, PREC_SHIFT, 0},
 312   {"<<", BINOP_LSH, PREC_SHIFT, 0},
 313   {"+", BINOP_ADD, PREC_ADD, 0},
 314   {"-", BINOP_SUB, PREC_ADD, 0},
 315   {"*", BINOP_MUL, PREC_MUL, 0},
 316   {"/", BINOP_DIV, PREC_MUL, 0},
 317   {"%", BINOP_REM, PREC_MUL, 0},
 318   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
 319   {"-", UNOP_NEG, PREC_PREFIX, 0},
 320   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
 321   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
 322   {"*", UNOP_IND, PREC_PREFIX, 0},
 323   {"&", UNOP_ADDR, PREC_PREFIX, 0},
 324   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
 325   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
 326   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
 327   {NULL, 0, 0, 0}
 328 };
 329 \f
 330 enum c_primitive_types {
 331   c_primitive_type_int,
 332   c_primitive_type_long,
 333   c_primitive_type_short,
 334   c_primitive_type_char,
 335   c_primitive_type_float,
 336   c_primitive_type_double,
 337   c_primitive_type_void,
 338   c_primitive_type_long_long,
 339   c_primitive_type_signed_char,
 340   c_primitive_type_unsigned_char,
 341   c_primitive_type_unsigned_short,
 342   c_primitive_type_unsigned_int,
 343   c_primitive_type_unsigned_long,
 344   c_primitive_type_unsigned_long_long,
 345   c_primitive_type_long_double,
 346   c_primitive_type_complex,
 347   c_primitive_type_double_complex,
 348   c_primitive_type_decfloat,
 349   c_primitive_type_decdouble,
 350   c_primitive_type_declong,
 351   nr_c_primitive_types
 352 };
 353
 354 void
 355 c_language_arch_info (struct gdbarch *gdbarch,
 356                       struct language_arch_info *lai)
 357 {
 358   const struct builtin_type *builtin = builtin_type (gdbarch);
 359   lai->string_char_type = builtin->builtin_char;
 360   lai->primitive_type_vector
 361     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1,
 362                               struct type *);
 363   lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int;
 364   lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long;
 365   lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short;
 366   lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char;
 367   lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float;
 368   lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double;
 369   lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void;
 370   lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long;
 371   lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char;
 372   lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char;
 373   lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short;
 374   lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int;
 375   lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long;
 376   lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long;
 377   lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double;
 378   lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex;
 379   lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex;
 380   lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat;
 381   lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble;
 382   lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong;
 383 }
 384
 385 const struct language_defn c_language_defn =
 386 {
 387   "c",                          /* Language name */
 388   language_c,
 389   range_check_off,
 390   type_check_off,
 391   case_sensitive_on,
 392   array_row_major,
 393   &exp_descriptor_standard,
 394   c_preprocess_and_parse,
 395   c_error,
 396   null_post_parser,
 397   c_printchar,                  /* Print a character constant */
 398   c_printstr,                   /* Function to print string constant */
 399   c_emit_char,                  /* Print a single char */
 400   c_print_type,                 /* Print a type using appropriate syntax */
 401   c_val_print,                  /* Print a value using appropriate syntax */
 402   c_value_print,                /* Print a top-level value */
 403   NULL,                         /* Language specific skip_trampoline */
 404   NULL,                         /* name_of_this */
 405   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
 406   basic_lookup_transparent_type,/* lookup_transparent_type */
 407   NULL,                         /* Language specific symbol demangler */
 408   NULL,                         /* Language specific class_name_from_physname */
 409   c_op_print_tab,               /* expression operators for printing */
 410   1,                            /* c-style arrays */
 411   0,                            /* String lower bound */
 412   default_word_break_characters,
 413   default_make_symbol_completion_list,
 414   c_language_arch_info,
 415   default_print_array_index,
 416   default_pass_by_reference,
 417   LANG_MAGIC
 418 };
 419
 420 enum cplus_primitive_types {
 421   cplus_primitive_type_int,
 422   cplus_primitive_type_long,
 423   cplus_primitive_type_short,
 424   cplus_primitive_type_char,
 425   cplus_primitive_type_float,
 426   cplus_primitive_type_double,
 427   cplus_primitive_type_void,
 428   cplus_primitive_type_long_long,
 429   cplus_primitive_type_signed_char,
 430   cplus_primitive_type_unsigned_char,
 431   cplus_primitive_type_unsigned_short,
 432   cplus_primitive_type_unsigned_int,
 433   cplus_primitive_type_unsigned_long,
 434   cplus_primitive_type_unsigned_long_long,
 435   cplus_primitive_type_long_double,
 436   cplus_primitive_type_complex,
 437   cplus_primitive_type_double_complex,
 438   cplus_primitive_type_bool,
 439   cplus_primitive_type_decfloat,
 440   cplus_primitive_type_decdouble,
 441   cplus_primitive_type_declong,
 442   nr_cplus_primitive_types
 443 };
 444
 445 static void
 446 cplus_language_arch_info (struct gdbarch *gdbarch,
 447                           struct language_arch_info *lai)
 448 {
 449   const struct builtin_type *builtin = builtin_type (gdbarch);
 450   lai->string_char_type = builtin->builtin_char;
 451   lai->primitive_type_vector
 452     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1,
 453                               struct type *);
 454   lai->primitive_type_vector [cplus_primitive_type_int]
 455     = builtin->builtin_int;
 456   lai->primitive_type_vector [cplus_primitive_type_long]
 457     = builtin->builtin_long;
 458   lai->primitive_type_vector [cplus_primitive_type_short]
 459     = builtin->builtin_short;
 460   lai->primitive_type_vector [cplus_primitive_type_char]
 461     = builtin->builtin_char;
 462   lai->primitive_type_vector [cplus_primitive_type_float]
 463     = builtin->builtin_float;
 464   lai->primitive_type_vector [cplus_primitive_type_double]
 465     = builtin->builtin_double;
 466   lai->primitive_type_vector [cplus_primitive_type_void]
 467     = builtin->builtin_void;
 468   lai->primitive_type_vector [cplus_primitive_type_long_long]
 469     = builtin->builtin_long_long;
 470   lai->primitive_type_vector [cplus_primitive_type_signed_char]
 471     = builtin->builtin_signed_char;
 472   lai->primitive_type_vector [cplus_primitive_type_unsigned_char]
 473     = builtin->builtin_unsigned_char;
 474   lai->primitive_type_vector [cplus_primitive_type_unsigned_short]
 475     = builtin->builtin_unsigned_short;
 476   lai->primitive_type_vector [cplus_primitive_type_unsigned_int]
 477     = builtin->builtin_unsigned_int;
 478   lai->primitive_type_vector [cplus_primitive_type_unsigned_long]
 479     = builtin->builtin_unsigned_long;
 480   lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long]
 481     = builtin->builtin_unsigned_long_long;
 482   lai->primitive_type_vector [cplus_primitive_type_long_double]
 483     = builtin->builtin_long_double;
 484   lai->primitive_type_vector [cplus_primitive_type_complex]
 485     = builtin->builtin_complex;
 486   lai->primitive_type_vector [cplus_primitive_type_double_complex]
 487     = builtin->builtin_double_complex;
 488   lai->primitive_type_vector [cplus_primitive_type_bool]
 489     = builtin->builtin_bool;
 490   lai->primitive_type_vector [cplus_primitive_type_decfloat]
 491     = builtin->builtin_decfloat;
 492   lai->primitive_type_vector [cplus_primitive_type_decdouble]
 493     = builtin->builtin_decdouble;
 494   lai->primitive_type_vector [cplus_primitive_type_declong]
 495     = builtin->builtin_declong;
 496 }
 497
 498 const struct language_defn cplus_language_defn =
 499 {
 500   "c++",                        /* Language name */
 501   language_cplus,
 502   range_check_off,
 503   type_check_off,
 504   case_sensitive_on,
 505   array_row_major,
 506   &exp_descriptor_standard,
 507   c_preprocess_and_parse,
 508   c_error,
 509   null_post_parser,
 510   c_printchar,                  /* Print a character constant */
 511   c_printstr,                   /* Function to print string constant */
 512   c_emit_char,                  /* Print a single char */
 513   c_print_type,                 /* Print a type using appropriate syntax */
 514   c_val_print,                  /* Print a value using appropriate syntax */
 515   c_value_print,                /* Print a top-level value */
 516   cplus_skip_trampoline,        /* Language specific skip_trampoline */
 517   "this",                       /* name_of_this */
 518   cp_lookup_symbol_nonlocal,    /* lookup_symbol_nonlocal */
 519   cp_lookup_transparent_type,   /* lookup_transparent_type */
 520   cplus_demangle,               /* Language specific symbol demangler */
 521   cp_class_name_from_physname,  /* Language specific class_name_from_physname */
 522   c_op_print_tab,               /* expression operators for printing */
 523   1,                            /* c-style arrays */
 524   0,                            /* String lower bound */
 525   default_word_break_characters,
 526   default_make_symbol_completion_list,
 527   cplus_language_arch_info,
 528   default_print_array_index,
 529   cp_pass_by_reference,
 530   LANG_MAGIC
 531 };
 532
 533 const struct language_defn asm_language_defn =
 534 {
 535   "asm",                        /* Language name */
 536   language_asm,
 537   range_check_off,
 538   type_check_off,
 539   case_sensitive_on,
 540   array_row_major,
 541   &exp_descriptor_standard,
 542   c_preprocess_and_parse,
 543   c_error,
 544   null_post_parser,
 545   c_printchar,                  /* Print a character constant */
 546   c_printstr,                   /* Function to print string constant */
 547   c_emit_char,                  /* Print a single char */
 548   c_print_type,                 /* Print a type using appropriate syntax */
 549   c_val_print,                  /* Print a value using appropriate syntax */
 550   c_value_print,                /* Print a top-level value */
 551   NULL,                         /* Language specific skip_trampoline */
 552   NULL,                         /* name_of_this */
 553   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
 554   basic_lookup_transparent_type,/* lookup_transparent_type */
 555   NULL,                         /* Language specific symbol demangler */
 556   NULL,                         /* Language specific class_name_from_physname */
 557   c_op_print_tab,               /* expression operators for printing */
 558   1,                            /* c-style arrays */
 559   0,                            /* String lower bound */
 560   default_word_break_characters,
 561   default_make_symbol_completion_list,
 562   c_language_arch_info, /* FIXME: la_language_arch_info.  */
 563   default_print_array_index,
 564   default_pass_by_reference,
 565   LANG_MAGIC
 566 };
 567
 568 /* The following language_defn does not represent a real language.
 569    It just provides a minimal support a-la-C that should allow users
 570    to do some simple operations when debugging applications that use
 571    a language currently not supported by GDB.  */
 572
 573 const struct language_defn minimal_language_defn =
 574 {
 575   "minimal",                    /* Language name */
 576   language_minimal,
 577   range_check_off,
 578   type_check_off,
 579   case_sensitive_on,
 580   array_row_major,
 581   &exp_descriptor_standard,
 582   c_preprocess_and_parse,
 583   c_error,
 584   null_post_parser,
 585   c_printchar,                  /* Print a character constant */
 586   c_printstr,                   /* Function to print string constant */
 587   c_emit_char,                  /* Print a single char */
 588   c_print_type,                 /* Print a type using appropriate syntax */
 589   c_val_print,                  /* Print a value using appropriate syntax */
 590   c_value_print,                /* Print a top-level value */
 591   NULL,                         /* Language specific skip_trampoline */
 592   NULL,                         /* name_of_this */
 593   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
 594   basic_lookup_transparent_type,/* lookup_transparent_type */
 595   NULL,                         /* Language specific symbol demangler */
 596   NULL,                         /* Language specific class_name_from_physname */
 597   c_op_print_tab,               /* expression operators for printing */
 598   1,                            /* c-style arrays */
 599   0,                            /* String lower bound */
 600   default_word_break_characters,
 601   default_make_symbol_completion_list,
 602   c_language_arch_info,
 603   default_print_array_index,
 604   default_pass_by_reference,
 605   LANG_MAGIC
 606 };
 607
 608 void
 609 _initialize_c_language (void)
 610 {
 611   add_language (&c_language_defn);
 612   add_language (&cplus_language_defn);
 613   add_language (&asm_language_defn);
 614   add_language (&minimal_language_defn);
 615 }