1 /* Support for printing C and C++ types for GDB, the GNU debugger.
2 Copyright (C) 1986-2018 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #include "gdb_obstack.h"
21 #include "bfd.h" /* Binary File Description. */
24 #include "expression.h"
31 #include "typeprint.h"
33 #include "cp-support.h"
35 /* When printing the offsets of a struct and its fields (i.e., 'ptype
36 /o'; type_print_options::print_offsets), we use this many
37 characters when printing the offset information at the beginning of
38 the line. This is needed in order to generate the correct amount
39 of whitespaces when no offset info should be printed for a certain
41 #define OFFSET_SPC_LEN 23
43 /* A list of access specifiers used for printing. */
53 static void c_type_print_varspec_suffix (struct type
*, struct ui_file
*, int,
56 const struct type_print_options
*);
58 static void c_type_print_varspec_prefix (struct type
*,
62 const struct type_print_options
*,
63 struct print_offset_data
*);
65 /* Print "const", "volatile", or address space modifiers. */
66 static void c_type_print_modifier (struct type
*,
70 static void c_type_print_base_1 (struct type
*type
, struct ui_file
*stream
,
71 int show
, int level
, enum language language
,
72 const struct type_print_options
*flags
,
73 struct print_offset_data
*podata
);
76 /* A callback function for cp_canonicalize_string_full that uses
77 typedef_hash_table::find_typedef. */
80 find_typedef_for_canonicalize (struct type
*t
, void *data
)
82 return typedef_hash_table::find_typedef
83 ((const struct type_print_options
*) data
, t
);
86 /* Print NAME on STREAM. If the 'raw' field of FLAGS is not set,
87 canonicalize NAME using the local typedefs first. */
90 print_name_maybe_canonical (const char *name
,
91 const struct type_print_options
*flags
,
92 struct ui_file
*stream
)
97 s
= cp_canonicalize_string_full (name
,
98 find_typedef_for_canonicalize
,
101 fputs_filtered (!s
.empty () ? s
.c_str () : name
, stream
);
106 /* Helper function for c_print_type. */
109 c_print_type_1 (struct type
*type
,
110 const char *varstring
,
111 struct ui_file
*stream
,
113 enum language language
,
114 const struct type_print_options
*flags
,
115 struct print_offset_data
*podata
)
120 const char *local_name
;
123 type
= check_typedef (type
);
125 local_name
= typedef_hash_table::find_typedef (flags
, type
);
126 if (local_name
!= NULL
)
128 fputs_filtered (local_name
, stream
);
129 if (varstring
!= NULL
&& *varstring
!= '\0')
130 fputs_filtered (" ", stream
);
134 c_type_print_base_1 (type
, stream
, show
, level
, language
, flags
, podata
);
135 code
= TYPE_CODE (type
);
136 if ((varstring
!= NULL
&& *varstring
!= '\0')
137 /* Need a space if going to print stars or brackets;
138 but not if we will print just a type name. */
139 || ((show
> 0 || TYPE_NAME (type
) == 0)
140 && (code
== TYPE_CODE_PTR
|| code
== TYPE_CODE_FUNC
141 || code
== TYPE_CODE_METHOD
142 || (code
== TYPE_CODE_ARRAY
143 && !TYPE_VECTOR (type
))
144 || code
== TYPE_CODE_MEMBERPTR
145 || code
== TYPE_CODE_METHODPTR
146 || TYPE_IS_REFERENCE (type
))))
147 fputs_filtered (" ", stream
);
148 need_post_space
= (varstring
!= NULL
&& strcmp (varstring
, "") != 0);
149 c_type_print_varspec_prefix (type
, stream
, show
, 0, need_post_space
,
150 language
, flags
, podata
);
153 if (varstring
!= NULL
)
155 fputs_filtered (varstring
, stream
);
157 /* For demangled function names, we have the arglist as part of
158 the name, so don't print an additional pair of ()'s. */
159 if (local_name
== NULL
)
161 demangled_args
= strchr (varstring
, '(') != NULL
;
162 c_type_print_varspec_suffix (type
, stream
, show
,
169 /* LEVEL is the depth to indent lines by. */
172 c_print_type (struct type
*type
,
173 const char *varstring
,
174 struct ui_file
*stream
,
176 const struct type_print_options
*flags
)
178 struct print_offset_data podata
;
180 c_print_type_1 (type
, varstring
, stream
, show
, level
,
181 current_language
->la_language
, flags
, &podata
);
188 c_print_type (struct type
*type
,
189 const char *varstring
,
190 struct ui_file
*stream
,
192 enum language language
,
193 const struct type_print_options
*flags
)
195 struct print_offset_data podata
;
197 c_print_type_1 (type
, varstring
, stream
, show
, level
, language
, flags
,
201 /* Print a typedef using C syntax. TYPE is the underlying type.
202 NEW_SYMBOL is the symbol naming the type. STREAM is the stream on
206 c_print_typedef (struct type
*type
,
207 struct symbol
*new_symbol
,
208 struct ui_file
*stream
)
210 type
= check_typedef (type
);
211 fprintf_filtered (stream
, "typedef ");
212 type_print (type
, "", stream
, 0);
213 if (TYPE_NAME ((SYMBOL_TYPE (new_symbol
))) == 0
214 || strcmp (TYPE_NAME ((SYMBOL_TYPE (new_symbol
))),
215 SYMBOL_LINKAGE_NAME (new_symbol
)) != 0
216 || TYPE_CODE (SYMBOL_TYPE (new_symbol
)) == TYPE_CODE_TYPEDEF
)
217 fprintf_filtered (stream
, " %s", SYMBOL_PRINT_NAME (new_symbol
));
218 fprintf_filtered (stream
, ";\n");
221 /* If TYPE is a derived type, then print out derivation information.
222 Print only the actual base classes of this type, not the base
223 classes of the base classes. I.e. for the derivation hierarchy:
226 class B : public A {int b; };
227 class C : public B {int c; };
229 Print the type of class C as:
235 Not as the following (like gdb used to), which is not legal C++
236 syntax for derived types and may be confused with the multiple
239 class C : public B : public A {
243 In general, gdb should try to print the types as closely as
244 possible to the form that they appear in the source code. */
247 cp_type_print_derivation_info (struct ui_file
*stream
,
249 const struct type_print_options
*flags
)
254 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
257 fputs_filtered (i
== 0 ? ": " : ", ", stream
);
258 fprintf_filtered (stream
, "%s%s ",
259 BASETYPE_VIA_PUBLIC (type
, i
)
260 ? "public" : (TYPE_FIELD_PROTECTED (type
, i
)
261 ? "protected" : "private"),
262 BASETYPE_VIA_VIRTUAL (type
, i
) ? " virtual" : "");
263 name
= TYPE_NAME (TYPE_BASECLASS (type
, i
));
265 print_name_maybe_canonical (name
, flags
, stream
);
267 fprintf_filtered (stream
, "(null)");
271 fputs_filtered (" ", stream
);
275 /* Print the C++ method arguments ARGS to the file STREAM. */
278 cp_type_print_method_args (struct type
*mtype
, const char *prefix
,
279 const char *varstring
, int staticp
,
280 struct ui_file
*stream
,
281 enum language language
,
282 const struct type_print_options
*flags
)
284 struct field
*args
= TYPE_FIELDS (mtype
);
285 int nargs
= TYPE_NFIELDS (mtype
);
286 int varargs
= TYPE_VARARGS (mtype
);
289 fprintf_symbol_filtered (stream
, prefix
,
290 language_cplus
, DMGL_ANSI
);
291 fprintf_symbol_filtered (stream
, varstring
,
292 language_cplus
, DMGL_ANSI
);
293 fputs_filtered ("(", stream
);
295 /* Skip the class variable. We keep this here to accommodate older
296 compilers and debug formats which may not support artificial
303 struct field arg
= args
[i
++];
305 /* Skip any artificial arguments. */
306 if (FIELD_ARTIFICIAL (arg
))
309 c_print_type (arg
.type
, "", stream
, 0, 0, flags
);
311 if (i
== nargs
&& varargs
)
312 fprintf_filtered (stream
, ", ...");
315 fprintf_filtered (stream
, ", ");
321 fprintf_filtered (stream
, "...");
322 else if (language
== language_cplus
)
323 fprintf_filtered (stream
, "void");
325 fprintf_filtered (stream
, ")");
327 /* For non-static methods, read qualifiers from the type of
333 gdb_assert (nargs
> 0);
334 gdb_assert (TYPE_CODE (args
[0].type
) == TYPE_CODE_PTR
);
335 domain
= TYPE_TARGET_TYPE (args
[0].type
);
337 if (TYPE_CONST (domain
))
338 fprintf_filtered (stream
, " const");
340 if (TYPE_VOLATILE (domain
))
341 fprintf_filtered (stream
, " volatile");
343 if (TYPE_RESTRICT (domain
))
344 fprintf_filtered (stream
, " restrict");
346 if (TYPE_ATOMIC (domain
))
347 fprintf_filtered (stream
, " _Atomic");
352 /* Print any asterisks or open-parentheses needed before the
353 variable name (to describe its type).
355 On outermost call, pass 0 for PASSED_A_PTR.
356 On outermost call, SHOW > 0 means should ignore
357 any typename for TYPE and show its details.
358 SHOW is always zero on recursive calls.
360 NEED_POST_SPACE is non-zero when a space will be be needed
361 between a trailing qualifier and a field, variable, or function
365 c_type_print_varspec_prefix (struct type
*type
,
366 struct ui_file
*stream
,
367 int show
, int passed_a_ptr
,
369 enum language language
,
370 const struct type_print_options
*flags
,
371 struct print_offset_data
*podata
)
378 if (TYPE_NAME (type
) && show
<= 0)
383 switch (TYPE_CODE (type
))
386 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
),
387 stream
, show
, 1, 1, language
, flags
,
389 fprintf_filtered (stream
, "*");
390 c_type_print_modifier (type
, stream
, 1, need_post_space
);
393 case TYPE_CODE_MEMBERPTR
:
394 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
),
395 stream
, show
, 0, 0, language
, flags
, podata
);
396 name
= TYPE_NAME (TYPE_SELF_TYPE (type
));
398 print_name_maybe_canonical (name
, flags
, stream
);
400 c_type_print_base_1 (TYPE_SELF_TYPE (type
),
401 stream
, -1, passed_a_ptr
, language
, flags
,
403 fprintf_filtered (stream
, "::*");
406 case TYPE_CODE_METHODPTR
:
407 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
),
408 stream
, show
, 0, 0, language
, flags
,
410 fprintf_filtered (stream
, "(");
411 name
= TYPE_NAME (TYPE_SELF_TYPE (type
));
413 print_name_maybe_canonical (name
, flags
, stream
);
415 c_type_print_base_1 (TYPE_SELF_TYPE (type
),
416 stream
, -1, passed_a_ptr
, language
, flags
,
418 fprintf_filtered (stream
, "::*");
422 case TYPE_CODE_RVALUE_REF
:
423 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
),
424 stream
, show
, 1, 0, language
, flags
,
426 fprintf_filtered (stream
, TYPE_CODE(type
) == TYPE_CODE_REF
? "&" : "&&");
427 c_type_print_modifier (type
, stream
, 1, need_post_space
);
430 case TYPE_CODE_METHOD
:
432 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
),
433 stream
, show
, 0, 0, language
, flags
,
436 fprintf_filtered (stream
, "(");
439 case TYPE_CODE_ARRAY
:
440 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
),
441 stream
, show
, 0, 0, language
, flags
,
444 fprintf_filtered (stream
, "(");
447 case TYPE_CODE_TYPEDEF
:
448 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
),
449 stream
, show
, passed_a_ptr
, 0,
450 language
, flags
, podata
);
453 case TYPE_CODE_UNDEF
:
454 case TYPE_CODE_STRUCT
:
455 case TYPE_CODE_UNION
:
457 case TYPE_CODE_FLAGS
:
461 case TYPE_CODE_ERROR
:
465 case TYPE_CODE_RANGE
:
466 case TYPE_CODE_STRING
:
467 case TYPE_CODE_COMPLEX
:
468 case TYPE_CODE_NAMESPACE
:
469 case TYPE_CODE_DECFLOAT
:
470 /* These types need no prefix. They are listed here so that
471 gcc -Wall will reveal any types that haven't been handled. */
474 error (_("type not handled in c_type_print_varspec_prefix()"));
479 /* Print out "const" and "volatile" attributes,
480 and address space id if present.
481 TYPE is a pointer to the type being printed out.
482 STREAM is the output destination.
483 NEED_PRE_SPACE = 1 indicates an initial white space is needed.
484 NEED_POST_SPACE = 1 indicates a final white space is needed. */
487 c_type_print_modifier (struct type
*type
, struct ui_file
*stream
,
488 int need_pre_space
, int need_post_space
)
490 int did_print_modifier
= 0;
491 const char *address_space_id
;
493 /* We don't print `const' qualifiers for references --- since all
494 operators affect the thing referenced, not the reference itself,
495 every reference is `const'. */
496 if (TYPE_CONST (type
) && !TYPE_IS_REFERENCE (type
))
499 fprintf_filtered (stream
, " ");
500 fprintf_filtered (stream
, "const");
501 did_print_modifier
= 1;
504 if (TYPE_VOLATILE (type
))
506 if (did_print_modifier
|| need_pre_space
)
507 fprintf_filtered (stream
, " ");
508 fprintf_filtered (stream
, "volatile");
509 did_print_modifier
= 1;
512 if (TYPE_RESTRICT (type
))
514 if (did_print_modifier
|| need_pre_space
)
515 fprintf_filtered (stream
, " ");
516 fprintf_filtered (stream
, "restrict");
517 did_print_modifier
= 1;
520 if (TYPE_ATOMIC (type
))
522 if (did_print_modifier
|| need_pre_space
)
523 fprintf_filtered (stream
, " ");
524 fprintf_filtered (stream
, "_Atomic");
525 did_print_modifier
= 1;
528 address_space_id
= address_space_int_to_name (get_type_arch (type
),
529 TYPE_INSTANCE_FLAGS (type
));
530 if (address_space_id
)
532 if (did_print_modifier
|| need_pre_space
)
533 fprintf_filtered (stream
, " ");
534 fprintf_filtered (stream
, "@%s", address_space_id
);
535 did_print_modifier
= 1;
538 if (did_print_modifier
&& need_post_space
)
539 fprintf_filtered (stream
, " ");
543 /* Print out the arguments of TYPE, which should have TYPE_CODE_METHOD
544 or TYPE_CODE_FUNC, to STREAM. Artificial arguments, such as "this"
545 in non-static methods, are displayed if LINKAGE_NAME is zero. If
546 LINKAGE_NAME is non-zero and LANGUAGE is language_cplus the topmost
547 parameter types get removed their possible const and volatile qualifiers to
548 match demangled linkage name parameters part of such function type.
549 LANGUAGE is the language in which TYPE was defined. This is a necessary
550 evil since this code is used by the C and C++. */
553 c_type_print_args (struct type
*type
, struct ui_file
*stream
,
554 int linkage_name
, enum language language
,
555 const struct type_print_options
*flags
)
560 fprintf_filtered (stream
, "(");
562 for (i
= 0; i
< TYPE_NFIELDS (type
); i
++)
564 struct type
*param_type
;
566 if (TYPE_FIELD_ARTIFICIAL (type
, i
) && linkage_name
)
571 fprintf_filtered (stream
, ", ");
575 param_type
= TYPE_FIELD_TYPE (type
, i
);
577 if (language
== language_cplus
&& linkage_name
)
579 /* C++ standard, 13.1 Overloadable declarations, point 3, item:
580 - Parameter declarations that differ only in the presence or
581 absence of const and/or volatile are equivalent.
583 And the const/volatile qualifiers are not present in the mangled
584 names as produced by GCC. */
586 param_type
= make_cv_type (0, 0, param_type
, NULL
);
589 c_print_type (param_type
, "", stream
, -1, 0, language
, flags
);
593 if (printed_any
&& TYPE_VARARGS (type
))
595 /* Print out a trailing ellipsis for varargs functions. Ignore
596 TYPE_VARARGS if the function has no named arguments; that
597 represents unprototyped (K&R style) C functions. */
598 if (printed_any
&& TYPE_VARARGS (type
))
600 fprintf_filtered (stream
, ", ");
602 fprintf_filtered (stream
, "...");
605 else if (!printed_any
606 && (TYPE_PROTOTYPED (type
) || language
== language_cplus
))
607 fprintf_filtered (stream
, "void");
609 fprintf_filtered (stream
, ")");
612 /* Return true iff the j'th overloading of the i'th method of TYPE
613 is a type conversion operator, like `operator int () { ... }'.
614 When listing a class's methods, we don't print the return type of
618 is_type_conversion_operator (struct type
*type
, int i
, int j
)
620 /* I think the whole idea of recognizing type conversion operators
621 by their name is pretty terrible. But I don't think our present
622 data structure gives us any other way to tell. If you know of
623 some other way, feel free to rewrite this function. */
624 const char *name
= TYPE_FN_FIELDLIST_NAME (type
, i
);
626 if (!startswith (name
, CP_OPERATOR_STR
))
630 if (! strchr (" \t\f\n\r", *name
))
633 while (strchr (" \t\f\n\r", *name
))
636 if (!('a' <= *name
&& *name
<= 'z')
637 && !('A' <= *name
&& *name
<= 'Z')
639 /* If this doesn't look like the start of an identifier, then it
640 isn't a type conversion operator. */
642 else if (startswith (name
, "new"))
644 else if (startswith (name
, "delete"))
647 /* If it doesn't look like new or delete, it's a type conversion
651 /* Is that really the end of the name? */
652 if (('a' <= *name
&& *name
<= 'z')
653 || ('A' <= *name
&& *name
<= 'Z')
654 || ('0' <= *name
&& *name
<= '9')
656 /* No, so the identifier following "operator" must be a type name,
657 and this is a type conversion operator. */
660 /* That was indeed the end of the name, so it was `operator new' or
661 `operator delete', neither of which are type conversion
666 /* Given a C++ qualified identifier QID, strip off the qualifiers,
667 yielding the unqualified name. The return value is a pointer into
670 It's a pity we don't have this information in some more structured
671 form. Even the author of this function feels that writing little
672 parsers like this everywhere is stupid. */
675 remove_qualifiers (char *qid
)
677 int quoted
= 0; /* Zero if we're not in quotes;
678 '"' if we're in a double-quoted string;
679 '\'' if we're in a single-quoted string. */
680 int depth
= 0; /* Number of unclosed parens we've seen. */
681 char *parenstack
= (char *) alloca (strlen (qid
));
683 char *last
= 0; /* The character after the rightmost
684 `::' token we've seen so far. */
686 for (scan
= qid
; *scan
; scan
++)
692 else if (*scan
== '\\' && *(scan
+ 1))
695 else if (scan
[0] == ':' && scan
[1] == ':')
697 /* If we're inside parenthesis (i.e., an argument list) or
698 angle brackets (i.e., a list of template arguments), then
699 we don't record the position of this :: token, since it's
700 not relevant to the top-level structure we're trying to
708 else if (*scan
== '"' || *scan
== '\'')
710 else if (*scan
== '(')
711 parenstack
[depth
++] = ')';
712 else if (*scan
== '[')
713 parenstack
[depth
++] = ']';
714 /* We're going to treat <> as a pair of matching characters,
715 since we're more likely to see those in template id's than
716 real less-than characters. What a crock. */
717 else if (*scan
== '<')
718 parenstack
[depth
++] = '>';
719 else if (*scan
== ')' || *scan
== ']' || *scan
== '>')
721 if (depth
> 0 && parenstack
[depth
- 1] == *scan
)
725 /* We're going to do a little error recovery here. If
726 we don't find a match for *scan on the paren stack,
727 but there is something lower on the stack that does
728 match, we pop the stack to that point. */
731 for (i
= depth
- 1; i
>= 0; i
--)
732 if (parenstack
[i
] == *scan
)
744 /* We didn't find any :: tokens at the top level, so declare the
745 whole thing an unqualified identifier. */
749 /* Print any array sizes, function arguments or close parentheses
750 needed after the variable name (to describe its type).
751 Args work like c_type_print_varspec_prefix. */
754 c_type_print_varspec_suffix (struct type
*type
,
755 struct ui_file
*stream
,
756 int show
, int passed_a_ptr
,
758 enum language language
,
759 const struct type_print_options
*flags
)
764 if (TYPE_NAME (type
) && show
<= 0)
769 switch (TYPE_CODE (type
))
771 case TYPE_CODE_ARRAY
:
773 LONGEST low_bound
, high_bound
;
774 int is_vector
= TYPE_VECTOR (type
);
777 fprintf_filtered (stream
, ")");
779 fprintf_filtered (stream
, (is_vector
?
780 " __attribute__ ((vector_size(" : "["));
781 /* Bounds are not yet resolved, print a bounds placeholder instead. */
782 if (TYPE_HIGH_BOUND_KIND (TYPE_INDEX_TYPE (type
)) == PROP_LOCEXPR
783 || TYPE_HIGH_BOUND_KIND (TYPE_INDEX_TYPE (type
)) == PROP_LOCLIST
)
784 fprintf_filtered (stream
, "variable length");
785 else if (get_array_bounds (type
, &low_bound
, &high_bound
))
786 fprintf_filtered (stream
, "%s",
787 plongest (high_bound
- low_bound
+ 1));
788 fprintf_filtered (stream
, (is_vector
? ")))" : "]"));
790 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type
), stream
,
791 show
, 0, 0, language
, flags
);
795 case TYPE_CODE_MEMBERPTR
:
796 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type
), stream
,
797 show
, 0, 0, language
, flags
);
800 case TYPE_CODE_METHODPTR
:
801 fprintf_filtered (stream
, ")");
802 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type
), stream
,
803 show
, 0, 0, language
, flags
);
808 case TYPE_CODE_RVALUE_REF
:
809 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type
), stream
,
810 show
, 1, 0, language
, flags
);
813 case TYPE_CODE_METHOD
:
816 fprintf_filtered (stream
, ")");
818 c_type_print_args (type
, stream
, 0, language
, flags
);
819 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type
), stream
,
820 show
, passed_a_ptr
, 0, language
, flags
);
823 case TYPE_CODE_TYPEDEF
:
824 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type
), stream
,
825 show
, passed_a_ptr
, 0, language
, flags
);
828 case TYPE_CODE_UNDEF
:
829 case TYPE_CODE_STRUCT
:
830 case TYPE_CODE_UNION
:
831 case TYPE_CODE_FLAGS
:
836 case TYPE_CODE_ERROR
:
840 case TYPE_CODE_RANGE
:
841 case TYPE_CODE_STRING
:
842 case TYPE_CODE_COMPLEX
:
843 case TYPE_CODE_NAMESPACE
:
844 case TYPE_CODE_DECFLOAT
:
845 /* These types do not need a suffix. They are listed so that
846 gcc -Wall will report types that may not have been
850 error (_("type not handled in c_type_print_varspec_suffix()"));
855 /* A helper for c_type_print_base that displays template
856 parameters and their bindings, if needed.
858 TABLE is the local bindings table to use. If NULL, no printing is
859 done. Note that, at this point, TABLE won't have any useful
860 information in it -- but it is also used as a flag to
861 print_name_maybe_canonical to activate searching the global typedef
864 TYPE is the type whose template arguments are being displayed.
866 STREAM is the stream on which to print. */
869 c_type_print_template_args (const struct type_print_options
*flags
,
870 struct type
*type
, struct ui_file
*stream
)
877 for (i
= 0; i
< TYPE_N_TEMPLATE_ARGUMENTS (type
); ++i
)
879 struct symbol
*sym
= TYPE_TEMPLATE_ARGUMENT (type
, i
);
881 if (SYMBOL_CLASS (sym
) != LOC_TYPEDEF
)
887 fprintf_filtered (stream
, _("[with %s = "),
888 SYMBOL_LINKAGE_NAME (sym
));
893 fputs_filtered (", ", stream
);
895 fprintf_filtered (stream
, "%s = ", SYMBOL_LINKAGE_NAME (sym
));
898 c_print_type (SYMBOL_TYPE (sym
), "", stream
, -1, 0, flags
);
902 fputs_filtered (_("] "), stream
);
905 /* Use 'print_spaces_filtered', but take into consideration the
906 type_print_options FLAGS in order to determine how many whitespaces
910 print_spaces_filtered_with_print_options
911 (int level
, struct ui_file
*stream
, const struct type_print_options
*flags
)
913 if (!flags
->print_offsets
)
914 print_spaces_filtered (level
, stream
);
916 print_spaces_filtered (level
+ OFFSET_SPC_LEN
, stream
);
919 /* Output an access specifier to STREAM, if needed. LAST_ACCESS is the
920 last access specifier output (typically returned by this function). */
922 static enum access_specifier
923 output_access_specifier (struct ui_file
*stream
,
924 enum access_specifier last_access
,
925 int level
, bool is_protected
, bool is_private
,
926 const struct type_print_options
*flags
)
930 if (last_access
!= s_protected
)
932 last_access
= s_protected
;
933 print_spaces_filtered_with_print_options (level
+ 2, stream
, flags
);
934 fprintf_filtered (stream
, "protected:\n");
939 if (last_access
!= s_private
)
941 last_access
= s_private
;
942 print_spaces_filtered_with_print_options (level
+ 2, stream
, flags
);
943 fprintf_filtered (stream
, "private:\n");
948 if (last_access
!= s_public
)
950 last_access
= s_public
;
951 print_spaces_filtered_with_print_options (level
+ 2, stream
, flags
);
952 fprintf_filtered (stream
, "public:\n");
959 /* Print information about field at index FIELD_IDX of the union type
960 TYPE. Since union fields don't have the concept of offsets, we
961 just print their sizes.
963 The output is strongly based on pahole(1). */
966 c_print_type_union_field_offset (struct type
*type
, unsigned int field_idx
,
967 struct ui_file
*stream
)
969 struct type
*ftype
= check_typedef (TYPE_FIELD_TYPE (type
, field_idx
));
971 fprintf_filtered (stream
, "/* %4u */", TYPE_LENGTH (ftype
));
974 /* Helper function for ptype/o implementation that prints information
975 about a hole, if necessary. STREAM is where to print. BITPOS is
976 the bitpos of the current field. PODATA is the offset-printing
977 state. FOR_WHAT is a string describing the purpose of the
981 maybe_print_hole (struct ui_file
*stream
, unsigned int bitpos
,
982 struct print_offset_data
*podata
, const char *for_what
)
984 /* We check for PODATA->END_BITPOS > 0 because there is a specific
985 scenario when PODATA->END_BITPOS can be zero and BITPOS can be >
986 0: when we are dealing with a struct/class with a virtual method.
987 Because of the vtable, the first field of the struct/class will
988 have an offset of sizeof (void *) (the size of the vtable). If
989 we do not check for PODATA->END_BITPOS > 0 here, GDB will report
990 a hole before the first field, which is not accurate. */
991 if (podata
->end_bitpos
> 0 && podata
->end_bitpos
< bitpos
)
993 /* If PODATA->END_BITPOS is smaller than the current type's
994 bitpos, it means there's a hole in the struct, so we report
996 unsigned int hole
= bitpos
- podata
->end_bitpos
;
997 unsigned int hole_byte
= hole
/ TARGET_CHAR_BIT
;
998 unsigned int hole_bit
= hole
% TARGET_CHAR_BIT
;
1001 fprintf_filtered (stream
, "/* XXX %2u-bit %s */\n", hole_bit
,
1005 fprintf_filtered (stream
, "/* XXX %2u-byte %s */\n", hole_byte
,
1010 /* Print information about field at index FIELD_IDX of the struct type
1013 PODATA->END_BITPOS is the one-past-the-end bit position of the
1014 previous field (where we expect this field to be if there is no
1015 hole). At the end, ENDPOS is updated to the one-past-the-end bit
1016 position of the current field.
1018 PODATA->OFFSET_BITPOS is the offset value we carry over when we are
1019 printing a struct that is inside another struct; this is useful so
1020 that the offset is constantly incremented (if we didn't carry it
1021 over, the offset would be reset to zero when printing the inner
1024 The output is strongly based on pahole(1). */
1027 c_print_type_struct_field_offset (struct type
*type
, unsigned int field_idx
,
1028 struct ui_file
*stream
,
1029 struct print_offset_data
*podata
)
1031 struct type
*ftype
= check_typedef (TYPE_FIELD_TYPE (type
, field_idx
));
1032 unsigned int bitpos
= TYPE_FIELD_BITPOS (type
, field_idx
);
1033 unsigned int fieldsize_byte
= TYPE_LENGTH (ftype
);
1034 unsigned int fieldsize_bit
= fieldsize_byte
* TARGET_CHAR_BIT
;
1036 maybe_print_hole (stream
, bitpos
, podata
, "hole");
1038 if (TYPE_FIELD_PACKED (type
, field_idx
))
1040 /* We're dealing with a bitfield. Print how many bits are left
1042 unsigned int bitsize
= TYPE_FIELD_BITSIZE (type
, field_idx
);
1043 /* The bitpos relative to the beginning of our container
1045 unsigned int relative_bitpos
;
1047 /* The following was copied from
1048 value.c:value_primitive_field. */
1049 if ((bitpos
% fieldsize_bit
) + bitsize
<= fieldsize_bit
)
1050 relative_bitpos
= bitpos
% fieldsize_bit
;
1052 relative_bitpos
= bitpos
% TARGET_CHAR_BIT
;
1054 /* This is the exact offset (in bits) of this bitfield. */
1055 unsigned int bit_offset
1056 = (bitpos
- relative_bitpos
) + podata
->offset_bitpos
;
1058 /* The position of the field, relative to the beginning of the
1059 struct, and how many bits are left to be used in this
1061 fprintf_filtered (stream
, "/* %4u:%2u", bit_offset
/ TARGET_CHAR_BIT
,
1062 fieldsize_bit
- (relative_bitpos
+ bitsize
));
1063 fieldsize_bit
= bitsize
;
1067 /* The position of the field, relative to the beginning of the
1069 fprintf_filtered (stream
, "/* %4u",
1070 (bitpos
+ podata
->offset_bitpos
) / TARGET_CHAR_BIT
);
1072 fprintf_filtered (stream
, " ");
1075 fprintf_filtered (stream
, " | %4u */", fieldsize_byte
);
1077 podata
->end_bitpos
= bitpos
+ fieldsize_bit
;
1080 /* Return true if an access label (i.e., "public:", "private:",
1081 "protected:") needs to be printed for TYPE. */
1084 need_access_label_p (struct type
*type
)
1086 if (TYPE_DECLARED_CLASS (type
))
1089 for (int i
= TYPE_N_BASECLASSES (type
); i
< TYPE_NFIELDS (type
); i
++)
1090 if (!TYPE_FIELD_PRIVATE (type
, i
))
1093 for (int j
= 0; j
< TYPE_NFN_FIELDS (type
); j
++)
1094 for (int i
= 0; i
< TYPE_FN_FIELDLIST_LENGTH (type
, j
); i
++)
1095 if (!TYPE_FN_FIELD_PRIVATE (TYPE_FN_FIELDLIST1 (type
,
1099 for (int i
= 0; i
< TYPE_TYPEDEF_FIELD_COUNT (type
); ++i
)
1100 if (!TYPE_TYPEDEF_FIELD_PRIVATE (type
, i
))
1106 for (int i
= TYPE_N_BASECLASSES (type
); i
< TYPE_NFIELDS (type
); i
++)
1107 if (TYPE_FIELD_PRIVATE (type
, i
) || TYPE_FIELD_PROTECTED (type
, i
))
1110 for (int j
= 0; j
< TYPE_NFN_FIELDS (type
); j
++)
1113 for (int i
= 0; i
< TYPE_FN_FIELDLIST_LENGTH (type
, j
); i
++)
1114 if (TYPE_FN_FIELD_PROTECTED (TYPE_FN_FIELDLIST1 (type
,
1116 || TYPE_FN_FIELD_PRIVATE (TYPE_FN_FIELDLIST1 (type
,
1122 for (int i
= 0; i
< TYPE_TYPEDEF_FIELD_COUNT (type
); ++i
)
1123 if (TYPE_TYPEDEF_FIELD_PROTECTED (type
, i
)
1124 || TYPE_TYPEDEF_FIELD_PRIVATE (type
, i
))
1131 /* Helper function that temporarily disables FLAGS->PRINT_OFFSETS,
1132 calls 'c_print_type_1', and then reenables FLAGS->PRINT_OFFSETS if
1136 c_print_type_no_offsets (struct type
*type
,
1137 const char *varstring
,
1138 struct ui_file
*stream
,
1139 int show
, int level
,
1140 enum language language
,
1141 struct type_print_options
*flags
,
1142 struct print_offset_data
*podata
)
1144 unsigned int old_po
= flags
->print_offsets
;
1146 /* Temporarily disable print_offsets, because it would mess with
1148 flags
->print_offsets
= 0;
1149 c_print_type_1 (type
, varstring
, stream
, show
, level
, language
, flags
,
1151 flags
->print_offsets
= old_po
;
1154 /* Helper for 'c_type_print_base' that handles structs and unions.
1155 For a description of the arguments, see 'c_type_print_base'. */
1158 c_type_print_base_struct_union (struct type
*type
, struct ui_file
*stream
,
1159 int show
, int level
,
1160 enum language language
,
1161 const struct type_print_options
*flags
,
1162 struct print_offset_data
*podata
)
1164 struct type_print_options local_flags
= *flags
;
1165 local_flags
.local_typedefs
= NULL
;
1167 std::unique_ptr
<typedef_hash_table
> hash_holder
;
1170 if (flags
->local_typedefs
)
1171 local_flags
.local_typedefs
1172 = new typedef_hash_table (*flags
->local_typedefs
);
1174 local_flags
.local_typedefs
= new typedef_hash_table ();
1176 hash_holder
.reset (local_flags
.local_typedefs
);
1179 c_type_print_modifier (type
, stream
, 0, 1);
1180 if (TYPE_CODE (type
) == TYPE_CODE_UNION
)
1181 fprintf_filtered (stream
, "union ");
1182 else if (TYPE_DECLARED_CLASS (type
))
1183 fprintf_filtered (stream
, "class ");
1185 fprintf_filtered (stream
, "struct ");
1187 /* Print the tag if it exists. The HP aCC compiler emits a
1188 spurious "{unnamed struct}"/"{unnamed union}"/"{unnamed
1189 enum}" tag for unnamed struct/union/enum's, which we don't
1191 if (TYPE_NAME (type
) != NULL
1192 && !startswith (TYPE_NAME (type
), "{unnamed"))
1194 /* When printing the tag name, we are still effectively
1195 printing in the outer context, hence the use of FLAGS
1197 print_name_maybe_canonical (TYPE_NAME (type
), flags
, stream
);
1199 fputs_filtered (" ", stream
);
1204 /* If we just printed a tag name, no need to print anything
1206 if (TYPE_NAME (type
) == NULL
)
1207 fprintf_filtered (stream
, "{...}");
1209 else if (show
> 0 || TYPE_NAME (type
) == NULL
)
1211 struct type
*basetype
;
1214 c_type_print_template_args (&local_flags
, type
, stream
);
1216 /* Add in template parameters when printing derivation info. */
1217 if (local_flags
.local_typedefs
!= NULL
)
1218 local_flags
.local_typedefs
->add_template_parameters (type
);
1219 cp_type_print_derivation_info (stream
, type
, &local_flags
);
1221 /* This holds just the global typedefs and the template
1223 struct type_print_options semi_local_flags
= *flags
;
1224 semi_local_flags
.local_typedefs
= NULL
;
1226 std::unique_ptr
<typedef_hash_table
> semi_holder
;
1227 if (local_flags
.local_typedefs
!= nullptr)
1229 semi_local_flags
.local_typedefs
1230 = new typedef_hash_table (*local_flags
.local_typedefs
);
1231 semi_holder
.reset (semi_local_flags
.local_typedefs
);
1233 /* Now add in the local typedefs. */
1234 local_flags
.local_typedefs
->recursively_update (type
);
1237 fprintf_filtered (stream
, "{\n");
1239 if (TYPE_NFIELDS (type
) == 0 && TYPE_NFN_FIELDS (type
) == 0
1240 && TYPE_TYPEDEF_FIELD_COUNT (type
) == 0)
1242 if (TYPE_STUB (type
))
1243 fprintfi_filtered (level
+ 4, stream
,
1244 _("<incomplete type>\n"));
1246 fprintfi_filtered (level
+ 4, stream
,
1247 _("<no data fields>\n"));
1250 /* Start off with no specific section type, so we can print
1251 one for the first field we find, and use that section type
1252 thereafter until we find another type. */
1254 enum access_specifier section_type
= s_none
;
1256 /* For a class, if all members are private, there's no need
1257 for a "private:" label; similarly, for a struct or union
1258 masquerading as a class, if all members are public, there's
1259 no need for a "public:" label. */
1260 bool need_access_label
= need_access_label_p (type
);
1262 /* If there is a base class for this type,
1263 do not print the field that it occupies. */
1265 int len
= TYPE_NFIELDS (type
);
1266 vptr_fieldno
= get_vptr_fieldno (type
, &basetype
);
1268 struct print_offset_data local_podata
;
1270 for (int i
= TYPE_N_BASECLASSES (type
); i
< len
; i
++)
1274 /* If we have a virtual table pointer, omit it. Even if
1275 virtual table pointers are not specifically marked in
1276 the debug info, they should be artificial. */
1277 if ((i
== vptr_fieldno
&& type
== basetype
)
1278 || TYPE_FIELD_ARTIFICIAL (type
, i
))
1281 if (need_access_label
)
1283 section_type
= output_access_specifier
1284 (stream
, section_type
, level
,
1285 TYPE_FIELD_PROTECTED (type
, i
),
1286 TYPE_FIELD_PRIVATE (type
, i
), flags
);
1289 bool is_static
= field_is_static (&TYPE_FIELD (type
, i
));
1291 if (flags
->print_offsets
)
1295 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
)
1297 c_print_type_struct_field_offset
1298 (type
, i
, stream
, podata
);
1300 else if (TYPE_CODE (type
) == TYPE_CODE_UNION
)
1301 c_print_type_union_field_offset (type
, i
, stream
);
1304 print_spaces_filtered (OFFSET_SPC_LEN
, stream
);
1307 print_spaces_filtered (level
+ 4, stream
);
1309 fprintf_filtered (stream
, "static ");
1311 int newshow
= show
- 1;
1313 if (flags
->print_offsets
1314 && (TYPE_CODE (TYPE_FIELD_TYPE (type
, i
)) == TYPE_CODE_STRUCT
1315 || TYPE_CODE (TYPE_FIELD_TYPE (type
, i
)) == TYPE_CODE_UNION
))
1317 /* If we're printing offsets and this field's type is
1318 either a struct or an union, then we're interested in
1322 /* Make sure we carry our offset when we expand the
1324 local_podata
.offset_bitpos
1325 = podata
->offset_bitpos
+ TYPE_FIELD_BITPOS (type
, i
);
1326 /* We're entering a struct/union. Right now,
1327 PODATA->END_BITPOS points right *after* the
1328 struct/union. However, when printing the first field
1329 of this inner struct/union, the end_bitpos we're
1330 expecting is exactly at the beginning of the
1331 struct/union. Therefore, we subtract the length of
1332 the whole struct/union. */
1333 local_podata
.end_bitpos
1334 = podata
->end_bitpos
1335 - TYPE_LENGTH (TYPE_FIELD_TYPE (type
, i
)) * TARGET_CHAR_BIT
;
1338 c_print_type_1 (TYPE_FIELD_TYPE (type
, i
),
1339 TYPE_FIELD_NAME (type
, i
),
1340 stream
, newshow
, level
+ 4,
1341 language
, &local_flags
, &local_podata
);
1343 if (!is_static
&& TYPE_FIELD_PACKED (type
, i
))
1345 /* It is a bitfield. This code does not attempt
1346 to look at the bitpos and reconstruct filler,
1347 unnamed fields. This would lead to misleading
1348 results if the compiler does not put out fields
1349 for such things (I don't know what it does). */
1350 fprintf_filtered (stream
, " : %d",
1351 TYPE_FIELD_BITSIZE (type
, i
));
1353 fprintf_filtered (stream
, ";\n");
1356 /* If there are both fields and methods, put a blank line
1357 between them. Make sure to count only method that we
1358 will display; artificial methods will be hidden. */
1359 len
= TYPE_NFN_FIELDS (type
);
1360 if (!flags
->print_methods
)
1363 for (int i
= 0; i
< len
; i
++)
1365 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, i
);
1366 int len2
= TYPE_FN_FIELDLIST_LENGTH (type
, i
);
1369 for (j
= 0; j
< len2
; j
++)
1370 if (!TYPE_FN_FIELD_ARTIFICIAL (f
, j
))
1373 if (real_len
> 0 && section_type
!= s_none
)
1374 fprintf_filtered (stream
, "\n");
1376 /* C++: print out the methods. */
1377 for (int i
= 0; i
< len
; i
++)
1379 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, i
);
1380 int j
, len2
= TYPE_FN_FIELDLIST_LENGTH (type
, i
);
1381 const char *method_name
= TYPE_FN_FIELDLIST_NAME (type
, i
);
1382 const char *name
= TYPE_NAME (type
);
1383 int is_constructor
= name
&& strcmp (method_name
,
1386 for (j
= 0; j
< len2
; j
++)
1388 const char *mangled_name
;
1389 gdb::unique_xmalloc_ptr
<char> mangled_name_holder
;
1390 char *demangled_name
;
1391 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, j
);
1392 int is_full_physname_constructor
=
1393 TYPE_FN_FIELD_CONSTRUCTOR (f
, j
)
1394 || is_constructor_name (physname
)
1395 || is_destructor_name (physname
)
1396 || method_name
[0] == '~';
1398 /* Do not print out artificial methods. */
1399 if (TYPE_FN_FIELD_ARTIFICIAL (f
, j
))
1403 section_type
= output_access_specifier
1404 (stream
, section_type
, level
,
1405 TYPE_FN_FIELD_PROTECTED (f
, j
),
1406 TYPE_FN_FIELD_PRIVATE (f
, j
), flags
);
1408 print_spaces_filtered_with_print_options (level
+ 4, stream
,
1410 if (TYPE_FN_FIELD_VIRTUAL_P (f
, j
))
1411 fprintf_filtered (stream
, "virtual ");
1412 else if (TYPE_FN_FIELD_STATIC_P (f
, j
))
1413 fprintf_filtered (stream
, "static ");
1414 if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f
, j
)) == 0)
1416 /* Keep GDB from crashing here. */
1417 fprintf_filtered (stream
,
1418 _("<undefined type> %s;\n"),
1419 TYPE_FN_FIELD_PHYSNAME (f
, j
));
1422 else if (!is_constructor
/* Constructors don't
1425 && !is_full_physname_constructor
/* " " */
1426 && !is_type_conversion_operator (type
, i
, j
))
1428 c_print_type_no_offsets
1429 (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f
, j
)),
1430 "", stream
, -1, 0, language
, &local_flags
, podata
);
1432 fputs_filtered (" ", stream
);
1434 if (TYPE_FN_FIELD_STUB (f
, j
))
1436 /* Build something we can demangle. */
1437 mangled_name_holder
.reset (gdb_mangle_name (type
, i
, j
));
1438 mangled_name
= mangled_name_holder
.get ();
1441 mangled_name
= TYPE_FN_FIELD_PHYSNAME (f
, j
);
1444 gdb_demangle (mangled_name
,
1445 DMGL_ANSI
| DMGL_PARAMS
);
1446 if (demangled_name
== NULL
)
1448 /* In some cases (for instance with the HP
1449 demangling), if a function has more than 10
1450 arguments, the demangling will fail.
1451 Let's try to reconstruct the function
1452 signature from the symbol information. */
1453 if (!TYPE_FN_FIELD_STUB (f
, j
))
1455 int staticp
= TYPE_FN_FIELD_STATIC_P (f
, j
);
1456 struct type
*mtype
= TYPE_FN_FIELD_TYPE (f
, j
);
1458 cp_type_print_method_args (mtype
,
1466 fprintf_filtered (stream
,
1467 _("<badly mangled name '%s'>"),
1473 char *demangled_no_class
1474 = remove_qualifiers (demangled_name
);
1476 /* Get rid of the `static' appended by the
1478 p
= strstr (demangled_no_class
, " static");
1481 int length
= p
- demangled_no_class
;
1482 char *demangled_no_static
;
1485 = (char *) xmalloc (length
+ 1);
1486 strncpy (demangled_no_static
,
1487 demangled_no_class
, length
);
1488 *(demangled_no_static
+ length
) = '\0';
1489 fputs_filtered (demangled_no_static
, stream
);
1490 xfree (demangled_no_static
);
1493 fputs_filtered (demangled_no_class
, stream
);
1494 xfree (demangled_name
);
1497 fprintf_filtered (stream
, ";\n");
1501 /* Print out nested types. */
1502 if (TYPE_NESTED_TYPES_COUNT (type
) != 0
1503 && semi_local_flags
.print_nested_type_limit
!= 0)
1505 if (semi_local_flags
.print_nested_type_limit
> 0)
1506 --semi_local_flags
.print_nested_type_limit
;
1508 if (TYPE_NFIELDS (type
) != 0 || TYPE_NFN_FIELDS (type
) != 0)
1509 fprintf_filtered (stream
, "\n");
1511 for (int i
= 0; i
< TYPE_NESTED_TYPES_COUNT (type
); ++i
)
1513 print_spaces_filtered_with_print_options (level
+ 4, stream
,
1515 c_print_type_no_offsets (TYPE_NESTED_TYPES_FIELD_TYPE (type
, i
),
1516 "", stream
, show
, level
+ 4,
1517 language
, &semi_local_flags
, podata
);
1518 fprintf_filtered (stream
, ";\n");
1522 /* Print typedefs defined in this class. */
1524 if (TYPE_TYPEDEF_FIELD_COUNT (type
) != 0 && flags
->print_typedefs
)
1526 if (TYPE_NFIELDS (type
) != 0 || TYPE_NFN_FIELDS (type
) != 0
1527 || TYPE_NESTED_TYPES_COUNT (type
) != 0)
1528 fprintf_filtered (stream
, "\n");
1530 for (int i
= 0; i
< TYPE_TYPEDEF_FIELD_COUNT (type
); i
++)
1532 struct type
*target
= TYPE_TYPEDEF_FIELD_TYPE (type
, i
);
1534 /* Dereference the typedef declaration itself. */
1535 gdb_assert (TYPE_CODE (target
) == TYPE_CODE_TYPEDEF
);
1536 target
= TYPE_TARGET_TYPE (target
);
1538 if (need_access_label
)
1540 section_type
= output_access_specifier
1541 (stream
, section_type
, level
,
1542 TYPE_TYPEDEF_FIELD_PROTECTED (type
, i
),
1543 TYPE_TYPEDEF_FIELD_PRIVATE (type
, i
), flags
);
1545 print_spaces_filtered_with_print_options (level
+ 4, stream
,
1547 fprintf_filtered (stream
, "typedef ");
1549 /* We want to print typedefs with substitutions
1550 from the template parameters or globally-known
1551 typedefs but not local typedefs. */
1552 c_print_type_no_offsets (target
,
1553 TYPE_TYPEDEF_FIELD_NAME (type
, i
),
1554 stream
, show
- 1, level
+ 4,
1555 language
, &semi_local_flags
, podata
);
1556 fprintf_filtered (stream
, ";\n");
1560 if (flags
->print_offsets
)
1564 unsigned int bitpos
= TYPE_LENGTH (type
) * TARGET_CHAR_BIT
;
1565 maybe_print_hole (stream
, bitpos
, podata
, "padding");
1567 fputs_filtered ("\n", stream
);
1568 print_spaces_filtered_with_print_options (level
+ 4,
1571 fprintf_filtered (stream
, "/* total size (bytes): %4u */\n",
1572 TYPE_LENGTH (type
));
1575 print_spaces_filtered (OFFSET_SPC_LEN
, stream
);
1577 print_spaces_filtered (2, stream
);
1580 fprintfi_filtered (level
, stream
, "}");
1584 /* Print the name of the type (or the ultimate pointer target,
1585 function value or array element), or the description of a structure
1588 SHOW positive means print details about the type (e.g. enum
1589 values), and print structure elements passing SHOW - 1 for show.
1591 SHOW negative means just print the type name or struct tag if there
1592 is one. If there is no name, print something sensible but concise
1593 like "struct {...}".
1595 SHOW zero means just print the type name or struct tag if there is
1596 one. If there is no name, print something sensible but not as
1597 concise like "struct {int x; int y;}".
1599 LEVEL is the number of spaces to indent by.
1600 We increase it for some recursive calls. */
1603 c_type_print_base_1 (struct type
*type
, struct ui_file
*stream
,
1604 int show
, int level
,
1605 enum language language
,
1606 const struct type_print_options
*flags
,
1607 struct print_offset_data
*podata
)
1616 fputs_filtered (_("<type unknown>"), stream
);
1620 /* When SHOW is zero or less, and there is a valid type name, then
1621 always just print the type name directly from the type. */
1624 && TYPE_NAME (type
) != NULL
)
1626 c_type_print_modifier (type
, stream
, 0, 1);
1628 /* If we have "typedef struct foo {. . .} bar;" do we want to
1629 print it as "struct foo" or as "bar"? Pick the latter for
1630 C++, because C++ folk tend to expect things like "class5
1631 *foo" rather than "struct class5 *foo". We rather
1632 arbitrarily choose to make language_minimal work in a C-like
1634 if (language
== language_c
|| language
== language_minimal
)
1636 if (TYPE_CODE (type
) == TYPE_CODE_UNION
)
1637 fprintf_filtered (stream
, "union ");
1638 else if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
)
1640 if (TYPE_DECLARED_CLASS (type
))
1641 fprintf_filtered (stream
, "class ");
1643 fprintf_filtered (stream
, "struct ");
1645 else if (TYPE_CODE (type
) == TYPE_CODE_ENUM
)
1646 fprintf_filtered (stream
, "enum ");
1649 print_name_maybe_canonical (TYPE_NAME (type
), flags
, stream
);
1653 type
= check_typedef (type
);
1655 switch (TYPE_CODE (type
))
1657 case TYPE_CODE_TYPEDEF
:
1658 /* If we get here, the typedef doesn't have a name, and we
1659 couldn't resolve TYPE_TARGET_TYPE. Not much we can do. */
1660 gdb_assert (TYPE_NAME (type
) == NULL
);
1661 gdb_assert (TYPE_TARGET_TYPE (type
) == NULL
);
1662 fprintf_filtered (stream
, _("<unnamed typedef>"));
1665 case TYPE_CODE_FUNC
:
1666 case TYPE_CODE_METHOD
:
1667 if (TYPE_TARGET_TYPE (type
) == NULL
)
1668 type_print_unknown_return_type (stream
);
1670 c_type_print_base_1 (TYPE_TARGET_TYPE (type
),
1671 stream
, show
, level
, language
, flags
, podata
);
1673 case TYPE_CODE_ARRAY
:
1675 case TYPE_CODE_MEMBERPTR
:
1677 case TYPE_CODE_RVALUE_REF
:
1678 case TYPE_CODE_METHODPTR
:
1679 c_type_print_base_1 (TYPE_TARGET_TYPE (type
),
1680 stream
, show
, level
, language
, flags
, podata
);
1683 case TYPE_CODE_STRUCT
:
1684 case TYPE_CODE_UNION
:
1685 c_type_print_base_struct_union (type
, stream
, show
, level
,
1686 language
, flags
, podata
);
1689 case TYPE_CODE_ENUM
:
1690 c_type_print_modifier (type
, stream
, 0, 1);
1691 fprintf_filtered (stream
, "enum ");
1692 if (TYPE_DECLARED_CLASS (type
))
1693 fprintf_filtered (stream
, "class ");
1694 /* Print the tag name if it exists.
1695 The aCC compiler emits a spurious
1696 "{unnamed struct}"/"{unnamed union}"/"{unnamed enum}"
1697 tag for unnamed struct/union/enum's, which we don't
1699 if (TYPE_NAME (type
) != NULL
1700 && !startswith (TYPE_NAME (type
), "{unnamed"))
1702 print_name_maybe_canonical (TYPE_NAME (type
), flags
, stream
);
1704 fputs_filtered (" ", stream
);
1710 /* If we just printed a tag name, no need to print anything
1712 if (TYPE_NAME (type
) == NULL
)
1713 fprintf_filtered (stream
, "{...}");
1715 else if (show
> 0 || TYPE_NAME (type
) == NULL
)
1717 LONGEST lastval
= 0;
1719 /* We can't handle this case perfectly, as DWARF does not
1720 tell us whether or not the underlying type was specified
1721 in the source (and other debug formats don't provide this
1722 at all). We choose to print the underlying type, if it
1723 has a name, when in C++ on the theory that it's better to
1724 print too much than too little; but conversely not to
1725 print something egregiously outside the current
1726 language's syntax. */
1727 if (language
== language_cplus
&& TYPE_TARGET_TYPE (type
) != NULL
)
1729 struct type
*underlying
= check_typedef (TYPE_TARGET_TYPE (type
));
1731 if (TYPE_NAME (underlying
) != NULL
)
1732 fprintf_filtered (stream
, ": %s ", TYPE_NAME (underlying
));
1735 fprintf_filtered (stream
, "{");
1736 len
= TYPE_NFIELDS (type
);
1737 for (i
= 0; i
< len
; i
++)
1741 fprintf_filtered (stream
, ", ");
1743 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
1744 if (lastval
!= TYPE_FIELD_ENUMVAL (type
, i
))
1746 fprintf_filtered (stream
, " = %s",
1747 plongest (TYPE_FIELD_ENUMVAL (type
, i
)));
1748 lastval
= TYPE_FIELD_ENUMVAL (type
, i
);
1752 fprintf_filtered (stream
, "}");
1756 case TYPE_CODE_FLAGS
:
1758 struct type_print_options local_flags
= *flags
;
1760 local_flags
.local_typedefs
= NULL
;
1762 c_type_print_modifier (type
, stream
, 0, 1);
1763 fprintf_filtered (stream
, "flag ");
1764 print_name_maybe_canonical (TYPE_NAME (type
), flags
, stream
);
1767 fputs_filtered (" ", stream
);
1768 fprintf_filtered (stream
, "{\n");
1769 if (TYPE_NFIELDS (type
) == 0)
1771 if (TYPE_STUB (type
))
1772 fprintfi_filtered (level
+ 4, stream
,
1773 _("<incomplete type>\n"));
1775 fprintfi_filtered (level
+ 4, stream
,
1776 _("<no data fields>\n"));
1778 len
= TYPE_NFIELDS (type
);
1779 for (i
= 0; i
< len
; i
++)
1782 print_spaces_filtered (level
+ 4, stream
);
1783 /* We pass "show" here and not "show - 1" to get enum types
1784 printed. There's no other way to see them. */
1785 c_print_type_1 (TYPE_FIELD_TYPE (type
, i
),
1786 TYPE_FIELD_NAME (type
, i
),
1787 stream
, show
, level
+ 4,
1788 language
, &local_flags
, podata
);
1789 fprintf_filtered (stream
, " @%s",
1790 plongest (TYPE_FIELD_BITPOS (type
, i
)));
1791 if (TYPE_FIELD_BITSIZE (type
, i
) > 1)
1793 fprintf_filtered (stream
, "-%s",
1794 plongest (TYPE_FIELD_BITPOS (type
, i
)
1795 + TYPE_FIELD_BITSIZE (type
, i
)
1798 fprintf_filtered (stream
, ";\n");
1800 fprintfi_filtered (level
, stream
, "}");
1805 case TYPE_CODE_VOID
:
1806 fprintf_filtered (stream
, "void");
1809 case TYPE_CODE_UNDEF
:
1810 fprintf_filtered (stream
, _("struct <unknown>"));
1813 case TYPE_CODE_ERROR
:
1814 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
1817 case TYPE_CODE_RANGE
:
1818 /* This should not occur. */
1819 fprintf_filtered (stream
, _("<range type>"));
1822 case TYPE_CODE_NAMESPACE
:
1823 fputs_filtered ("namespace ", stream
);
1824 fputs_filtered (TYPE_NAME (type
), stream
);
1828 /* Handle types not explicitly handled by the other cases, such
1829 as fundamental types. For these, just print whatever the
1830 type name is, as recorded in the type itself. If there is no
1831 type name, then complain. */
1832 if (TYPE_NAME (type
) != NULL
)
1834 c_type_print_modifier (type
, stream
, 0, 1);
1835 print_name_maybe_canonical (TYPE_NAME (type
), flags
, stream
);
1839 /* At least for dump_symtab, it is important that this not
1841 fprintf_filtered (stream
, _("<invalid type code %d>"),
1848 /* See c_type_print_base_1. */
1851 c_type_print_base (struct type
*type
, struct ui_file
*stream
,
1852 int show
, int level
,
1853 const struct type_print_options
*flags
)
1855 struct print_offset_data podata
;
1857 c_type_print_base_1 (type
, stream
, show
, level
,
1858 current_language
->la_language
, flags
, &podata
);