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binutils-gdb/gdb/c-typeprint.c
Pedro Alves 7022349d5c Stop assuming no-debug-info functions return int 
The fact that GDB defaults to assuming that functions return int, when
it has no debug info for the function has been a recurring source of
user confusion.  Recently this came up on the errno pretty printer
discussions.  Shortly after, it came up again on IRC, with someone
wondering why does getenv() in GDB return a negative int:

  (gdb) p getenv("PATH")
  $1 = -6185

This question (with s/getenv/random-other-C-runtime-function) is a FAQ
on IRC.

The reason for the above is:

 (gdb) p getenv
 $2 = {<text variable, no debug info>} 0x7ffff7751d80 <getenv>
 (gdb) ptype getenv
 type = int ()

... which means that GDB truncated the 64-bit pointer that is actually
returned from getent to 32-bit, and then sign-extended it:

 (gdb) p /x -6185
 $6 = 0xffffe7d7

The workaround is to cast the function to the right type, like:

 (gdb) p ((char *(*) (const char *)) getenv) ("PATH")
 $3 = 0x7fffffffe7d7 "/usr/local/bin:/"...

IMO, we should do better than this.

I see the "assume-int" issue the same way I see printing bogus values
for optimized-out variables instead of "<optimized out>" -- I'd much
rather that the debugger tells me "I don't know" and tells me how to
fix it than showing me bogus misleading results, making me go around
tilting at windmills.

If GDB prints a signed integer when you're expecting a pointer or
aggregate, you at least have some sense that something is off, but
consider the case of the function actually returning a 64-bit integer.
For example, compile this without debug info:

 unsigned long long
 function ()
 {
   return 0x7fffffffffffffff;
 }

Currently, with pristine GDB, you get:

 (gdb) p function ()
 $1 = -1                      # incorrect
 (gdb) p /x function ()
 $2 = 0xffffffff              # incorrect

maybe after spending a few hours debugging you suspect something is
wrong with that -1, and do:

 (gdb) ptype function
 type = int ()

and maybe, just maybe, you realize that the function actually returns
unsigned long long.  And you try to fix it with:

(gdb) p /x (unsigned long long) function ()
 $3 = 0xffffffffffffffff      # incorrect

... which still produces the wrong result, because GDB simply applied
int to unsigned long long conversion.  Meaning, it sign-extended the
integer that it extracted from the return of the function, to 64-bits.

and then maybe, after asking around on IRC, you realize you have to
cast the function to a pointer of the right type, and call that.  It
won't be easy, but after a few missteps, you'll get to it:

.....  (gdb) p /x ((unsigned long long(*) ()) function) ()
 $666 = 0x7fffffffffffffff             # finally! :-)


So to improve on the user experience, this patch does the following
(interrelated) things:

 - makes no-debug-info functions no longer default to "int" as return
   type.  Instead, they're left with NULL/"<unknown return type>"
   return type.

    (gdb) ptype getenv
    type = <unknown return type> ()

 - makes calling a function with unknown return type an error.

    (gdb) p getenv ("PATH")
    'getenv' has unknown return type; cast the call to its declared return type

 - and then to make it easier to call the function, makes it possible
   to _only_ cast the return of the function to the right type,
   instead of having to cast the function to a function pointer:

    (gdb) p (char *) getenv ("PATH")                      # now Just Works
    $3 = 0x7fffffffe7d7 "/usr/local/bin:/"...

    (gdb) p ((char *(*) (const char *)) getenv) ("PATH")  # continues working
    $4 = 0x7fffffffe7d7 "/usr/local/bin:/"...

   I.e., it makes GDB default the function's return type to the type
   of the cast, and the function's parameters to the type of the
   arguments passed down.

After this patch, here's what you'll get for the "unsigned long long"
example above:

 (gdb) p function ()
 'function' has unknown return type; cast the call to its declared return type
 (gdb) p /x (unsigned long long) function ()
 $4 = 0x7fffffffffffffff     # correct!

Note that while with "print" GDB shows the name of the function that
has the problem:

  (gdb) p getenv ("PATH")
  'getenv' has unknown return type; cast the call to its declared return type

which can by handy in more complicated expressions, "ptype" does not:

  (gdb) ptype getenv ("PATH")
  function has unknown return type; cast the call to its declared return type

This will be fixed in the next patch.

gdb/ChangeLog:
2017-09-04  Pedro Alves  <palves@redhat.com>

	* ada-lang.c (ada_evaluate_subexp) <TYPE_CODE_FUNC>: Don't handle
	TYPE_GNU_IFUNC specially here.  Throw error if return type is
	unknown.
	* ada-typeprint.c (print_func_type): Handle functions with unknown
	return type.
	* c-typeprint.c (c_type_print_base): Handle functions and methods
	with unknown return type.
	* compile/compile-c-symbols.c (convert_symbol_bmsym)
	<mst_text_gnu_ifunc>: Use nodebug_text_gnu_ifunc_symbol.
	* compile/compile-c-types.c: Include "objfiles.h".
	(convert_func): For functions with unknown return type, warn and
	default to int.
	* compile/compile-object-run.c (compile_object_run): Adjust call
	to call_function_by_hand_dummy.
	* elfread.c (elf_gnu_ifunc_resolve_addr): Adjust call to
	call_function_by_hand.
	* eval.c (evaluate_subexp_standard): Adjust calls to
	call_function_by_hand.  Handle functions and methods with unknown
	return type.  Pass expect_type to call_function_by_hand.
	* f-typeprint.c (f_type_print_base): Handle functions with unknown
	return type.
	* gcore.c (call_target_sbrk): Adjust call to
	call_function_by_hand.
	* gdbtypes.c (objfile_type): Leave nodebug text symbol with NULL
	return type instead of int.  Make nodebug_text_gnu_ifunc_symbol be
	an integer address type instead of nodebug.
	* guile/scm-value.c (gdbscm_value_call): Adjust call to
	call_function_by_hand.
	* infcall.c (error_call_unknown_return_type): New function.
	(call_function_by_hand): New "default_return_type" parameter.
	Pass it down.
	(call_function_by_hand_dummy): New "default_return_type"
	parameter.  Use it instead of defaulting to int.  If there's no
	default and the return type is unknown, throw an error.  If
	there's a default return type, and the called function has no
	debug info, then assume the function is prototyped.
	* infcall.h (call_function_by_hand, call_function_by_hand_dummy):
	New "default_return_type" parameter.
	(error_call_unknown_return_type): New declaration.
	* linux-fork.c (call_lseek): Cast return type of lseek.
	(inferior_call_waitpid, checkpoint_command): Adjust calls to
	call_function_by_hand.
	* linux-tdep.c (linux_infcall_mmap, linux_infcall_munmap): Adjust
	calls to call_function_by_hand.
	* m2-typeprint.c (m2_procedure): Handle functions with unknown
	return type.
	* objc-lang.c (lookup_objc_class, lookup_child_selector)
	(value_nsstring, print_object_command): Adjust calls to
	call_function_by_hand.
	* p-typeprint.c (pascal_type_print_varspec_prefix): Handle
	functions with unknown return type.
	(pascal_type_print_func_varspec_suffix): New function.
	(pascal_type_print_varspec_suffix) <TYPE_CODE_FUNC,
	TYPE_CODE_METHOD>: Use it.
	* python/py-value.c (valpy_call): Adjust call to
	call_function_by_hand.
	* rust-lang.c (rust_evaluate_funcall): Adjust call to
	call_function_by_hand.
	* valarith.c (value_x_binop, value_x_unop): Adjust calls to
	call_function_by_hand.
	* valops.c (value_allocate_space_in_inferior): Adjust call to
	call_function_by_hand.
	* typeprint.c (type_print_unknown_return_type): New function.
	* typeprint.h (type_print_unknown_return_type): New declaration.

gdb/testsuite/ChangeLog:
2017-09-04  Pedro Alves  <palves@redhat.com>

	* gdb.base/break-main-file-remove-fail.exp (test_remove_bp): Cast
	return type of munmap in infcall.
	* gdb.base/break-probes.exp: Cast return type of foo in infcall.
	* gdb.base/checkpoint.exp: Simplify using for loop.  Cast return
	type of ftell in infcall.
	* gdb.base/dprintf-detach.exp (dprintf_detach_test): Cast return
	type of getpid in infcall.
	* gdb.base/infcall-exec.exp: Cast return type of execlp in
	infcall.
	* gdb.base/info-os.exp: Cast return type of getpid in infcall.
	Bail on failure to extract the pid.
	* gdb.base/nodebug.c: #include <stdint.h>.
	(multf, multf_noproto, mult, mult_noproto, add8, add8_noproto):
	New functions.
	* gdb.base/nodebug.exp (test_call_promotion): New procedure.
	Change expected output of print/whatis/ptype with functions with
	no debug info.  Test all supported languages.  Call
	test_call_promotion.
	* gdb.compile/compile.exp: Adjust expected output to expect
	warning.
	* gdb.threads/siginfo-threads.exp: Likewise.
2017-09-04 20:21:13 +01:00

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/* Support for printing C and C++ types for GDB, the GNU debugger.
Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdb_obstack.h"
#include "bfd.h" /* Binary File Description. */
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "value.h"
#include "gdbcore.h"
#include "target.h"
#include "language.h"
#include "demangle.h"
#include "c-lang.h"
#include "typeprint.h"
#include "cp-abi.h"
#include "cp-support.h"
static void c_type_print_varspec_prefix (struct type *,
struct ui_file *,
int, int, int,
const struct type_print_options *);
/* Print "const", "volatile", or address space modifiers. */
static void c_type_print_modifier (struct type *,
struct ui_file *,
int, int);
/* A callback function for cp_canonicalize_string_full that uses
find_typedef_in_hash. */
static const char *
find_typedef_for_canonicalize (struct type *t, void *data)
{
return find_typedef_in_hash ((const struct type_print_options *) data, t);
}
/* Print NAME on STREAM. If the 'raw' field of FLAGS is not set,
canonicalize NAME using the local typedefs first. */
static void
print_name_maybe_canonical (const char *name,
const struct type_print_options *flags,
struct ui_file *stream)
{
std::string s;
if (!flags->raw)
s = cp_canonicalize_string_full (name,
find_typedef_for_canonicalize,
(void *) flags);
fputs_filtered (!s.empty () ? s.c_str () : name, stream);
}
/* LEVEL is the depth to indent lines by. */
void
c_print_type (struct type *type,
const char *varstring,
struct ui_file *stream,
int show, int level,
const struct type_print_options *flags)
{
enum type_code code;
int demangled_args;
int need_post_space;
const char *local_name;
if (show > 0)
type = check_typedef (type);
local_name = find_typedef_in_hash (flags, type);
if (local_name != NULL)
{
fputs_filtered (local_name, stream);
if (varstring != NULL && *varstring != '\0')
fputs_filtered (" ", stream);
}
else
{
c_type_print_base (type, stream, show, level, flags);
code = TYPE_CODE (type);
if ((varstring != NULL && *varstring != '\0')
/* Need a space if going to print stars or brackets;
but not if we will print just a type name. */
|| ((show > 0 || TYPE_NAME (type) == 0)
&& (code == TYPE_CODE_PTR || code == TYPE_CODE_FUNC
|| code == TYPE_CODE_METHOD
|| (code == TYPE_CODE_ARRAY
&& !TYPE_VECTOR (type))
|| code == TYPE_CODE_MEMBERPTR
|| code == TYPE_CODE_METHODPTR
|| TYPE_IS_REFERENCE (type))))
fputs_filtered (" ", stream);
need_post_space = (varstring != NULL && strcmp (varstring, "") != 0);
c_type_print_varspec_prefix (type, stream, show, 0, need_post_space,
flags);
}
if (varstring != NULL)
{
fputs_filtered (varstring, stream);
/* For demangled function names, we have the arglist as part of
the name, so don't print an additional pair of ()'s. */
if (local_name == NULL)
{
demangled_args = strchr (varstring, '(') != NULL;
c_type_print_varspec_suffix (type, stream, show,
0, demangled_args,
flags);
}
}
}
/* Print a typedef using C syntax. TYPE is the underlying type.
NEW_SYMBOL is the symbol naming the type. STREAM is the stream on
which to print. */
void
c_print_typedef (struct type *type,
struct symbol *new_symbol,
struct ui_file *stream)
{
type = check_typedef (type);
fprintf_filtered (stream, "typedef ");
type_print (type, "", stream, 0);
if (TYPE_NAME ((SYMBOL_TYPE (new_symbol))) == 0
|| strcmp (TYPE_NAME ((SYMBOL_TYPE (new_symbol))),
SYMBOL_LINKAGE_NAME (new_symbol)) != 0
|| TYPE_CODE (SYMBOL_TYPE (new_symbol)) == TYPE_CODE_TYPEDEF)
fprintf_filtered (stream, " %s", SYMBOL_PRINT_NAME (new_symbol));
fprintf_filtered (stream, ";\n");
}
/* If TYPE is a derived type, then print out derivation information.
Print only the actual base classes of this type, not the base
classes of the base classes. I.e. for the derivation hierarchy:
class A { int a; };
class B : public A {int b; };
class C : public B {int c; };
Print the type of class C as:
class C : public B {
int c;
}
Not as the following (like gdb used to), which is not legal C++
syntax for derived types and may be confused with the multiple
inheritance form:
class C : public B : public A {
int c;
}
In general, gdb should try to print the types as closely as
possible to the form that they appear in the source code. */
static void
cp_type_print_derivation_info (struct ui_file *stream,
struct type *type,
const struct type_print_options *flags)
{
const char *name;
int i;
for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
{
wrap_here (" ");
fputs_filtered (i == 0 ? ": " : ", ", stream);
fprintf_filtered (stream, "%s%s ",
BASETYPE_VIA_PUBLIC (type, i)
? "public" : (TYPE_FIELD_PROTECTED (type, i)
? "protected" : "private"),
BASETYPE_VIA_VIRTUAL (type, i) ? " virtual" : "");
name = type_name_no_tag (TYPE_BASECLASS (type, i));
if (name)
print_name_maybe_canonical (name, flags, stream);
else
fprintf_filtered (stream, "(null)");
}
if (i > 0)
{
fputs_filtered (" ", stream);
}
}
/* Print the C++ method arguments ARGS to the file STREAM. */
static void
cp_type_print_method_args (struct type *mtype, const char *prefix,
const char *varstring, int staticp,
struct ui_file *stream,
const struct type_print_options *flags)
{
struct field *args = TYPE_FIELDS (mtype);
int nargs = TYPE_NFIELDS (mtype);
int varargs = TYPE_VARARGS (mtype);
int i;
fprintf_symbol_filtered (stream, prefix,
language_cplus, DMGL_ANSI);
fprintf_symbol_filtered (stream, varstring,
language_cplus, DMGL_ANSI);
fputs_filtered ("(", stream);
/* Skip the class variable. We keep this here to accommodate older
compilers and debug formats which may not support artificial
parameters. */
i = staticp ? 0 : 1;
if (nargs > i)
{
while (i < nargs)
{
struct field arg = args[i++];
/* Skip any artificial arguments. */
if (FIELD_ARTIFICIAL (arg))
continue;
c_print_type (arg.type, "", stream, 0, 0, flags);
if (i == nargs && varargs)
fprintf_filtered (stream, ", ...");
else if (i < nargs)
{
fprintf_filtered (stream, ", ");
wrap_here (" ");
}
}
}
else if (varargs)
fprintf_filtered (stream, "...");
else if (current_language->la_language == language_cplus)
fprintf_filtered (stream, "void");
fprintf_filtered (stream, ")");
/* For non-static methods, read qualifiers from the type of
THIS. */
if (!staticp)
{
struct type *domain;
gdb_assert (nargs > 0);
gdb_assert (TYPE_CODE (args[0].type) == TYPE_CODE_PTR);
domain = TYPE_TARGET_TYPE (args[0].type);
if (TYPE_CONST (domain))
fprintf_filtered (stream, " const");
if (TYPE_VOLATILE (domain))
fprintf_filtered (stream, " volatile");
if (TYPE_RESTRICT (domain))
fprintf_filtered (stream, " restrict");
if (TYPE_ATOMIC (domain))
fprintf_filtered (stream, " _Atomic");
}
}
/* Print any asterisks or open-parentheses needed before the
variable name (to describe its type).
On outermost call, pass 0 for PASSED_A_PTR.
On outermost call, SHOW > 0 means should ignore
any typename for TYPE and show its details.
SHOW is always zero on recursive calls.
NEED_POST_SPACE is non-zero when a space will be be needed
between a trailing qualifier and a field, variable, or function
name. */
static void
c_type_print_varspec_prefix (struct type *type,
struct ui_file *stream,
int show, int passed_a_ptr,
int need_post_space,
const struct type_print_options *flags)
{
const char *name;
if (type == 0)
return;
if (TYPE_NAME (type) && show <= 0)
return;
QUIT;
switch (TYPE_CODE (type))
{
case TYPE_CODE_PTR:
c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
stream, show, 1, 1, flags);
fprintf_filtered (stream, "*");
c_type_print_modifier (type, stream, 1, need_post_space);
break;
case TYPE_CODE_MEMBERPTR:
c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
stream, show, 0, 0, flags);
name = type_name_no_tag (TYPE_SELF_TYPE (type));
if (name)
print_name_maybe_canonical (name, flags, stream);
else
c_type_print_base (TYPE_SELF_TYPE (type),
stream, -1, passed_a_ptr, flags);
fprintf_filtered (stream, "::*");
break;
case TYPE_CODE_METHODPTR:
c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
stream, show, 0, 0, flags);
fprintf_filtered (stream, "(");
name = type_name_no_tag (TYPE_SELF_TYPE (type));
if (name)
print_name_maybe_canonical (name, flags, stream);
else
c_type_print_base (TYPE_SELF_TYPE (type),
stream, -1, passed_a_ptr, flags);
fprintf_filtered (stream, "::*");
break;
case TYPE_CODE_REF:
case TYPE_CODE_RVALUE_REF:
c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
stream, show, 1, 0, flags);
fprintf_filtered (stream, TYPE_CODE(type) == TYPE_CODE_REF ? "&" : "&&");
c_type_print_modifier (type, stream, 1, need_post_space);
break;
case TYPE_CODE_METHOD:
case TYPE_CODE_FUNC:
c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
stream, show, 0, 0, flags);
if (passed_a_ptr)
fprintf_filtered (stream, "(");
break;
case TYPE_CODE_ARRAY:
c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
stream, show, 0, 0, flags);
if (passed_a_ptr)
fprintf_filtered (stream, "(");
break;
case TYPE_CODE_TYPEDEF:
c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
stream, show, passed_a_ptr, 0, flags);
break;
case TYPE_CODE_UNDEF:
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
case TYPE_CODE_ENUM:
case TYPE_CODE_FLAGS:
case TYPE_CODE_INT:
case TYPE_CODE_FLT:
case TYPE_CODE_VOID:
case TYPE_CODE_ERROR:
case TYPE_CODE_CHAR:
case TYPE_CODE_BOOL:
case TYPE_CODE_SET:
case TYPE_CODE_RANGE:
case TYPE_CODE_STRING:
case TYPE_CODE_COMPLEX:
case TYPE_CODE_NAMESPACE:
case TYPE_CODE_DECFLOAT:
/* These types need no prefix. They are listed here so that
gcc -Wall will reveal any types that haven't been handled. */
break;
default:
error (_("type not handled in c_type_print_varspec_prefix()"));
break;
}
}
/* Print out "const" and "volatile" attributes,
and address space id if present.
TYPE is a pointer to the type being printed out.
STREAM is the output destination.
NEED_PRE_SPACE = 1 indicates an initial white space is needed.
NEED_POST_SPACE = 1 indicates a final white space is needed. */
static void
c_type_print_modifier (struct type *type, struct ui_file *stream,
int need_pre_space, int need_post_space)
{
int did_print_modifier = 0;
const char *address_space_id;
/* We don't print `const' qualifiers for references --- since all
operators affect the thing referenced, not the reference itself,
every reference is `const'. */
if (TYPE_CONST (type) && !TYPE_IS_REFERENCE (type))
{
if (need_pre_space)
fprintf_filtered (stream, " ");
fprintf_filtered (stream, "const");
did_print_modifier = 1;
}
if (TYPE_VOLATILE (type))
{
if (did_print_modifier || need_pre_space)
fprintf_filtered (stream, " ");
fprintf_filtered (stream, "volatile");
did_print_modifier = 1;
}
if (TYPE_RESTRICT (type))
{
if (did_print_modifier || need_pre_space)
fprintf_filtered (stream, " ");
fprintf_filtered (stream, "restrict");
did_print_modifier = 1;
}
if (TYPE_ATOMIC (type))
{
if (did_print_modifier || need_pre_space)
fprintf_filtered (stream, " ");
fprintf_filtered (stream, "_Atomic");
did_print_modifier = 1;
}
address_space_id = address_space_int_to_name (get_type_arch (type),
TYPE_INSTANCE_FLAGS (type));
if (address_space_id)
{
if (did_print_modifier || need_pre_space)
fprintf_filtered (stream, " ");
fprintf_filtered (stream, "@%s", address_space_id);
did_print_modifier = 1;
}
if (did_print_modifier && need_post_space)
fprintf_filtered (stream, " ");
}
/* Print out the arguments of TYPE, which should have TYPE_CODE_METHOD
or TYPE_CODE_FUNC, to STREAM. Artificial arguments, such as "this"
in non-static methods, are displayed if LINKAGE_NAME is zero. If
LINKAGE_NAME is non-zero and LANGUAGE is language_cplus the topmost
parameter types get removed their possible const and volatile qualifiers to
match demangled linkage name parameters part of such function type.
LANGUAGE is the language in which TYPE was defined. This is a necessary
evil since this code is used by the C and C++. */
void
c_type_print_args (struct type *type, struct ui_file *stream,
int linkage_name, enum language language,
const struct type_print_options *flags)
{
int i;
int printed_any = 0;
fprintf_filtered (stream, "(");
for (i = 0; i < TYPE_NFIELDS (type); i++)
{
struct type *param_type;
if (TYPE_FIELD_ARTIFICIAL (type, i) && linkage_name)
continue;
if (printed_any)
{
fprintf_filtered (stream, ", ");
wrap_here (" ");
}
param_type = TYPE_FIELD_TYPE (type, i);
if (language == language_cplus && linkage_name)
{
/* C++ standard, 13.1 Overloadable declarations, point 3, item:
- Parameter declarations that differ only in the presence or
absence of const and/or volatile are equivalent.
And the const/volatile qualifiers are not present in the mangled
names as produced by GCC. */
param_type = make_cv_type (0, 0, param_type, NULL);
}
c_print_type (param_type, "", stream, -1, 0, flags);
printed_any = 1;
}
if (printed_any && TYPE_VARARGS (type))
{
/* Print out a trailing ellipsis for varargs functions. Ignore
TYPE_VARARGS if the function has no named arguments; that
represents unprototyped (K&R style) C functions. */
if (printed_any && TYPE_VARARGS (type))
{
fprintf_filtered (stream, ", ");
wrap_here (" ");
fprintf_filtered (stream, "...");
}
}
else if (!printed_any
&& (TYPE_PROTOTYPED (type) || language == language_cplus))
fprintf_filtered (stream, "void");
fprintf_filtered (stream, ")");
}
/* Return true iff the j'th overloading of the i'th method of TYPE
is a type conversion operator, like `operator int () { ... }'.
When listing a class's methods, we don't print the return type of
such operators. */
static int
is_type_conversion_operator (struct type *type, int i, int j)
{
/* I think the whole idea of recognizing type conversion operators
by their name is pretty terrible. But I don't think our present
data structure gives us any other way to tell. If you know of
some other way, feel free to rewrite this function. */
const char *name = TYPE_FN_FIELDLIST_NAME (type, i);
if (!startswith (name, CP_OPERATOR_STR))
return 0;
name += 8;
if (! strchr (" \t\f\n\r", *name))
return 0;
while (strchr (" \t\f\n\r", *name))
name++;
if (!('a' <= *name && *name <= 'z')
&& !('A' <= *name && *name <= 'Z')
&& *name != '_')
/* If this doesn't look like the start of an identifier, then it
isn't a type conversion operator. */
return 0;
else if (startswith (name, "new"))
name += 3;
else if (startswith (name, "delete"))
name += 6;
else
/* If it doesn't look like new or delete, it's a type conversion
operator. */
return 1;
/* Is that really the end of the name? */
if (('a' <= *name && *name <= 'z')
|| ('A' <= *name && *name <= 'Z')
|| ('0' <= *name && *name <= '9')
|| *name == '_')
/* No, so the identifier following "operator" must be a type name,
and this is a type conversion operator. */
return 1;
/* That was indeed the end of the name, so it was `operator new' or
`operator delete', neither of which are type conversion
operators. */
return 0;
}
/* Given a C++ qualified identifier QID, strip off the qualifiers,
yielding the unqualified name. The return value is a pointer into
the original string.
It's a pity we don't have this information in some more structured
form. Even the author of this function feels that writing little
parsers like this everywhere is stupid. */
static char *
remove_qualifiers (char *qid)
{
int quoted = 0; /* Zero if we're not in quotes;
'"' if we're in a double-quoted string;
'\'' if we're in a single-quoted string. */
int depth = 0; /* Number of unclosed parens we've seen. */
char *parenstack = (char *) alloca (strlen (qid));
char *scan;
char *last = 0; /* The character after the rightmost
`::' token we've seen so far. */
for (scan = qid; *scan; scan++)
{
if (quoted)
{
if (*scan == quoted)
quoted = 0;
else if (*scan == '\\' && *(scan + 1))
scan++;
}
else if (scan[0] == ':' && scan[1] == ':')
{
/* If we're inside parenthesis (i.e., an argument list) or
angle brackets (i.e., a list of template arguments), then
we don't record the position of this :: token, since it's
not relevant to the top-level structure we're trying to
operate on. */
if (depth == 0)
{
last = scan + 2;
scan++;
}
}
else if (*scan == '"' || *scan == '\'')
quoted = *scan;
else if (*scan == '(')
parenstack[depth++] = ')';
else if (*scan == '[')
parenstack[depth++] = ']';
/* We're going to treat <> as a pair of matching characters,
since we're more likely to see those in template id's than
real less-than characters. What a crock. */
else if (*scan == '<')
parenstack[depth++] = '>';
else if (*scan == ')' || *scan == ']' || *scan == '>')
{
if (depth > 0 && parenstack[depth - 1] == *scan)
depth--;
else
{
/* We're going to do a little error recovery here. If
we don't find a match for *scan on the paren stack,
but there is something lower on the stack that does
match, we pop the stack to that point. */
int i;
for (i = depth - 1; i >= 0; i--)
if (parenstack[i] == *scan)
{
depth = i;
break;
}
}
}
}
if (last)
return last;
else
/* We didn't find any :: tokens at the top level, so declare the
whole thing an unqualified identifier. */
return qid;
}
/* Print any array sizes, function arguments or close parentheses
needed after the variable name (to describe its type).
Args work like c_type_print_varspec_prefix. */
void
c_type_print_varspec_suffix (struct type *type,
struct ui_file *stream,
int show, int passed_a_ptr,
int demangled_args,
const struct type_print_options *flags)
{
if (type == 0)
return;
if (TYPE_NAME (type) && show <= 0)
return;
QUIT;
switch (TYPE_CODE (type))
{
case TYPE_CODE_ARRAY:
{
LONGEST low_bound, high_bound;
int is_vector = TYPE_VECTOR (type);
if (passed_a_ptr)
fprintf_filtered (stream, ")");
fprintf_filtered (stream, (is_vector ?
" __attribute__ ((vector_size(" : "["));
/* Bounds are not yet resolved, print a bounds placeholder instead. */
if (TYPE_HIGH_BOUND_KIND (TYPE_INDEX_TYPE (type)) == PROP_LOCEXPR
|| TYPE_HIGH_BOUND_KIND (TYPE_INDEX_TYPE (type)) == PROP_LOCLIST)
fprintf_filtered (stream, "variable length");
else if (get_array_bounds (type, &low_bound, &high_bound))
fprintf_filtered (stream, "%s",
plongest (high_bound - low_bound + 1));
fprintf_filtered (stream, (is_vector ? ")))" : "]"));
c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
show, 0, 0, flags);
}
break;
case TYPE_CODE_MEMBERPTR:
c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
show, 0, 0, flags);
break;
case TYPE_CODE_METHODPTR:
fprintf_filtered (stream, ")");
c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
show, 0, 0, flags);
break;
case TYPE_CODE_PTR:
case TYPE_CODE_REF:
case TYPE_CODE_RVALUE_REF:
c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
show, 1, 0, flags);
break;
case TYPE_CODE_METHOD:
case TYPE_CODE_FUNC:
if (passed_a_ptr)
fprintf_filtered (stream, ")");
if (!demangled_args)
c_type_print_args (type, stream, 0, current_language->la_language,
flags);
c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
show, passed_a_ptr, 0, flags);
break;
case TYPE_CODE_TYPEDEF:
c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
show, passed_a_ptr, 0, flags);
break;
case TYPE_CODE_UNDEF:
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
case TYPE_CODE_FLAGS:
case TYPE_CODE_ENUM:
case TYPE_CODE_INT:
case TYPE_CODE_FLT:
case TYPE_CODE_VOID:
case TYPE_CODE_ERROR:
case TYPE_CODE_CHAR:
case TYPE_CODE_BOOL:
case TYPE_CODE_SET:
case TYPE_CODE_RANGE:
case TYPE_CODE_STRING:
case TYPE_CODE_COMPLEX:
case TYPE_CODE_NAMESPACE:
case TYPE_CODE_DECFLOAT:
/* These types do not need a suffix. They are listed so that
gcc -Wall will report types that may not have been
considered. */
break;
default:
error (_("type not handled in c_type_print_varspec_suffix()"));
break;
}
}
/* A helper for c_type_print_base that displays template
parameters and their bindings, if needed.
TABLE is the local bindings table to use. If NULL, no printing is
done. Note that, at this point, TABLE won't have any useful
information in it -- but it is also used as a flag to
print_name_maybe_canonical to activate searching the global typedef
table.
TYPE is the type whose template arguments are being displayed.
STREAM is the stream on which to print. */
static void
c_type_print_template_args (const struct type_print_options *flags,
struct type *type, struct ui_file *stream)
{
int first = 1, i;
if (flags->raw)
return;
for (i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i)
{
struct symbol *sym = TYPE_TEMPLATE_ARGUMENT (type, i);
if (SYMBOL_CLASS (sym) != LOC_TYPEDEF)
continue;
if (first)
{
wrap_here (" ");
fprintf_filtered (stream, _("[with %s = "),
SYMBOL_LINKAGE_NAME (sym));
first = 0;
}
else
{
fputs_filtered (", ", stream);
wrap_here (" ");
fprintf_filtered (stream, "%s = ", SYMBOL_LINKAGE_NAME (sym));
}
c_print_type (SYMBOL_TYPE (sym), "", stream, -1, 0, flags);
}
if (!first)
fputs_filtered (_("] "), stream);
}
/* Print the name of the type (or the ultimate pointer target,
function value or array element), or the description of a structure
or union.
SHOW positive means print details about the type (e.g. enum
values), and print structure elements passing SHOW - 1 for show.
SHOW negative means just print the type name or struct tag if there
is one. If there is no name, print something sensible but concise
like "struct {...}".
SHOW zero means just print the type name or struct tag if there is
one. If there is no name, print something sensible but not as
concise like "struct {int x; int y;}".
LEVEL is the number of spaces to indent by.
We increase it for some recursive calls. */
void
c_type_print_base (struct type *type, struct ui_file *stream,
int show, int level, const struct type_print_options *flags)
{
int i;
int len, real_len;
enum
{
s_none, s_public, s_private, s_protected
}
section_type;
int need_access_label = 0;
int j, len2;
QUIT;
if (type == NULL)
{
fputs_filtered (_("<type unknown>"), stream);
return;
}
/* When SHOW is zero or less, and there is a valid type name, then
always just print the type name directly from the type. */
/* If we have "typedef struct foo {. . .} bar;" do we want to print
it as "struct foo" or as "bar"? Pick the latter, because C++
folk tend to expect things like "class5 *foo" rather than "struct
class5 *foo". */
if (show <= 0
&& TYPE_NAME (type) != NULL)
{
c_type_print_modifier (type, stream, 0, 1);
print_name_maybe_canonical (TYPE_NAME (type), flags, stream);
return;
}
type = check_typedef (type);
switch (TYPE_CODE (type))
{
case TYPE_CODE_TYPEDEF:
/* If we get here, the typedef doesn't have a name, and we
couldn't resolve TYPE_TARGET_TYPE. Not much we can do. */
gdb_assert (TYPE_NAME (type) == NULL);
gdb_assert (TYPE_TARGET_TYPE (type) == NULL);
fprintf_filtered (stream, _("<unnamed typedef>"));
break;
case TYPE_CODE_FUNC:
case TYPE_CODE_METHOD:
if (TYPE_TARGET_TYPE (type) == NULL)
type_print_unknown_return_type (stream);
else
c_type_print_base (TYPE_TARGET_TYPE (type),
stream, show, level, flags);
break;
case TYPE_CODE_ARRAY:
case TYPE_CODE_PTR:
case TYPE_CODE_MEMBERPTR:
case TYPE_CODE_REF:
case TYPE_CODE_RVALUE_REF:
case TYPE_CODE_METHODPTR:
c_type_print_base (TYPE_TARGET_TYPE (type),
stream, show, level, flags);
break;
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
{
struct type_print_options local_flags = *flags;
struct type_print_options semi_local_flags = *flags;
struct cleanup *local_cleanups = make_cleanup (null_cleanup, NULL);
local_flags.local_typedefs = NULL;
semi_local_flags.local_typedefs = NULL;
if (!flags->raw)
{
if (flags->local_typedefs)
local_flags.local_typedefs
= copy_typedef_hash (flags->local_typedefs);
else
local_flags.local_typedefs = create_typedef_hash ();
make_cleanup_free_typedef_hash (local_flags.local_typedefs);
}
c_type_print_modifier (type, stream, 0, 1);
if (TYPE_CODE (type) == TYPE_CODE_UNION)
fprintf_filtered (stream, "union ");
else if (TYPE_DECLARED_CLASS (type))
fprintf_filtered (stream, "class ");
else
fprintf_filtered (stream, "struct ");
/* Print the tag if it exists. The HP aCC compiler emits a
spurious "{unnamed struct}"/"{unnamed union}"/"{unnamed
enum}" tag for unnamed struct/union/enum's, which we don't
want to print. */
if (TYPE_TAG_NAME (type) != NULL
&& !startswith (TYPE_TAG_NAME (type), "{unnamed"))
{
/* When printing the tag name, we are still effectively
printing in the outer context, hence the use of FLAGS
here. */
print_name_maybe_canonical (TYPE_TAG_NAME (type), flags, stream);
if (show > 0)
fputs_filtered (" ", stream);
}
if (show < 0)
{
/* If we just printed a tag name, no need to print anything
else. */
if (TYPE_TAG_NAME (type) == NULL)
fprintf_filtered (stream, "{...}");
}
else if (show > 0 || TYPE_TAG_NAME (type) == NULL)
{
struct type *basetype;
int vptr_fieldno;
c_type_print_template_args (&local_flags, type, stream);
/* Add in template parameters when printing derivation info. */
add_template_parameters (local_flags.local_typedefs, type);
cp_type_print_derivation_info (stream, type, &local_flags);
/* This holds just the global typedefs and the template
parameters. */
semi_local_flags.local_typedefs
= copy_typedef_hash (local_flags.local_typedefs);
if (semi_local_flags.local_typedefs)
make_cleanup_free_typedef_hash (semi_local_flags.local_typedefs);
/* Now add in the local typedefs. */
recursively_update_typedef_hash (local_flags.local_typedefs, type);
fprintf_filtered (stream, "{\n");
if (TYPE_NFIELDS (type) == 0 && TYPE_NFN_FIELDS (type) == 0
&& TYPE_TYPEDEF_FIELD_COUNT (type) == 0)
{
if (TYPE_STUB (type))
fprintfi_filtered (level + 4, stream,
_("<incomplete type>\n"));
else
fprintfi_filtered (level + 4, stream,
_("<no data fields>\n"));
}
/* Start off with no specific section type, so we can print
one for the first field we find, and use that section type
thereafter until we find another type. */
section_type = s_none;
/* For a class, if all members are private, there's no need
for a "private:" label; similarly, for a struct or union
masquerading as a class, if all members are public, there's
no need for a "public:" label. */
if (TYPE_DECLARED_CLASS (type))
{
QUIT;
len = TYPE_NFIELDS (type);
for (i = TYPE_N_BASECLASSES (type); i < len; i++)
if (!TYPE_FIELD_PRIVATE (type, i))
{
need_access_label = 1;
break;
}
QUIT;
if (!need_access_label)
{
len2 = TYPE_NFN_FIELDS (type);
for (j = 0; j < len2; j++)
{
len = TYPE_FN_FIELDLIST_LENGTH (type, j);
for (i = 0; i < len; i++)
if (!TYPE_FN_FIELD_PRIVATE (TYPE_FN_FIELDLIST1 (type,
j), i))
{
need_access_label = 1;
break;
}
if (need_access_label)
break;
}
}
}
else
{
QUIT;
len = TYPE_NFIELDS (type);
for (i = TYPE_N_BASECLASSES (type); i < len; i++)
if (TYPE_FIELD_PRIVATE (type, i)
|| TYPE_FIELD_PROTECTED (type, i))
{
need_access_label = 1;
break;
}
QUIT;
if (!need_access_label)
{
len2 = TYPE_NFN_FIELDS (type);
for (j = 0; j < len2; j++)
{
QUIT;
len = TYPE_FN_FIELDLIST_LENGTH (type, j);
for (i = 0; i < len; i++)
if (TYPE_FN_FIELD_PROTECTED (TYPE_FN_FIELDLIST1 (type,
j), i)
|| TYPE_FN_FIELD_PRIVATE (TYPE_FN_FIELDLIST1 (type,
j),
i))
{
need_access_label = 1;
break;
}
if (need_access_label)
break;
}
}
}
/* If there is a base class for this type,
do not print the field that it occupies. */
len = TYPE_NFIELDS (type);
vptr_fieldno = get_vptr_fieldno (type, &basetype);
for (i = TYPE_N_BASECLASSES (type); i < len; i++)
{
QUIT;
/* If we have a virtual table pointer, omit it. Even if
virtual table pointers are not specifically marked in
the debug info, they should be artificial. */
if ((i == vptr_fieldno && type == basetype)
|| TYPE_FIELD_ARTIFICIAL (type, i))
continue;
if (need_access_label)
{
if (TYPE_FIELD_PROTECTED (type, i))
{
if (section_type != s_protected)
{
section_type = s_protected;
fprintfi_filtered (level + 2, stream,
"protected:\n");
}
}
else if (TYPE_FIELD_PRIVATE (type, i))
{
if (section_type != s_private)
{
section_type = s_private;
fprintfi_filtered (level + 2, stream,
"private:\n");
}
}
else
{
if (section_type != s_public)
{
section_type = s_public;
fprintfi_filtered (level + 2, stream,
"public:\n");
}
}
}
print_spaces_filtered (level + 4, stream);
if (field_is_static (&TYPE_FIELD (type, i)))
fprintf_filtered (stream, "static ");
c_print_type (TYPE_FIELD_TYPE (type, i),
TYPE_FIELD_NAME (type, i),
stream, show - 1, level + 4,
&local_flags);
if (!field_is_static (&TYPE_FIELD (type, i))
&& TYPE_FIELD_PACKED (type, i))
{
/* It is a bitfield. This code does not attempt
to look at the bitpos and reconstruct filler,
unnamed fields. This would lead to misleading
results if the compiler does not put out fields
for such things (I don't know what it does). */
fprintf_filtered (stream, " : %d",
TYPE_FIELD_BITSIZE (type, i));
}
fprintf_filtered (stream, ";\n");
}
/* If there are both fields and methods, put a blank line
between them. Make sure to count only method that we
will display; artificial methods will be hidden. */
len = TYPE_NFN_FIELDS (type);
if (!flags->print_methods)
len = 0;
real_len = 0;
for (i = 0; i < len; i++)
{
struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
int len2 = TYPE_FN_FIELDLIST_LENGTH (type, i);
int j;
for (j = 0; j < len2; j++)
if (!TYPE_FN_FIELD_ARTIFICIAL (f, j))
real_len++;
}
if (real_len > 0 && section_type != s_none)
fprintf_filtered (stream, "\n");
/* C++: print out the methods. */
for (i = 0; i < len; i++)
{
struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
int j, len2 = TYPE_FN_FIELDLIST_LENGTH (type, i);
const char *method_name = TYPE_FN_FIELDLIST_NAME (type, i);
const char *name = type_name_no_tag (type);
int is_constructor = name && strcmp (method_name,
name) == 0;
for (j = 0; j < len2; j++)
{
const char *mangled_name;
char *demangled_name;
struct cleanup *inner_cleanup;
const char *physname = TYPE_FN_FIELD_PHYSNAME (f, j);
int is_full_physname_constructor =
TYPE_FN_FIELD_CONSTRUCTOR (f, j)
|| is_constructor_name (physname)
|| is_destructor_name (physname)
|| method_name[0] == '~';
/* Do not print out artificial methods. */
if (TYPE_FN_FIELD_ARTIFICIAL (f, j))
continue;
inner_cleanup = make_cleanup (null_cleanup, NULL);
QUIT;
if (TYPE_FN_FIELD_PROTECTED (f, j))
{
if (section_type != s_protected)
{
section_type = s_protected;
fprintfi_filtered (level + 2, stream,
"protected:\n");
}
}
else if (TYPE_FN_FIELD_PRIVATE (f, j))
{
if (section_type != s_private)
{
section_type = s_private;
fprintfi_filtered (level + 2, stream,
"private:\n");
}
}
else
{
if (section_type != s_public)
{
section_type = s_public;
fprintfi_filtered (level + 2, stream,
"public:\n");
}
}
print_spaces_filtered (level + 4, stream);
if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
fprintf_filtered (stream, "virtual ");
else if (TYPE_FN_FIELD_STATIC_P (f, j))
fprintf_filtered (stream, "static ");
if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) == 0)
{
/* Keep GDB from crashing here. */
fprintf_filtered (stream,
_("<undefined type> %s;\n"),
TYPE_FN_FIELD_PHYSNAME (f, j));
break;
}
else if (!is_constructor /* Constructors don't
have declared
types. */
&& !is_full_physname_constructor /* " " */
&& !is_type_conversion_operator (type, i, j))
{
c_print_type (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)),
"", stream, -1, 0,
&local_flags);
fputs_filtered (" ", stream);
}
if (TYPE_FN_FIELD_STUB (f, j))
{
char *tem;
/* Build something we can demangle. */
tem = gdb_mangle_name (type, i, j);
make_cleanup (xfree, tem);
mangled_name = tem;
}
else
mangled_name = TYPE_FN_FIELD_PHYSNAME (f, j);
demangled_name =
gdb_demangle (mangled_name,
DMGL_ANSI | DMGL_PARAMS);
if (demangled_name == NULL)
{
/* In some cases (for instance with the HP
demangling), if a function has more than 10
arguments, the demangling will fail.
Let's try to reconstruct the function
signature from the symbol information. */
if (!TYPE_FN_FIELD_STUB (f, j))
{
int staticp = TYPE_FN_FIELD_STATIC_P (f, j);
struct type *mtype = TYPE_FN_FIELD_TYPE (f, j);
cp_type_print_method_args (mtype,
"",
method_name,
staticp,
stream, &local_flags);
}
else
fprintf_filtered (stream,
_("<badly mangled name '%s'>"),
mangled_name);
}
else
{
char *p;
char *demangled_no_class
= remove_qualifiers (demangled_name);
/* Get rid of the `static' appended by the
demangler. */
p = strstr (demangled_no_class, " static");
if (p != NULL)
{
int length = p - demangled_no_class;
char *demangled_no_static;
demangled_no_static
= (char *) xmalloc (length + 1);
strncpy (demangled_no_static,
demangled_no_class, length);
*(demangled_no_static + length) = '\0';
fputs_filtered (demangled_no_static, stream);
xfree (demangled_no_static);
}
else
fputs_filtered (demangled_no_class, stream);
xfree (demangled_name);
}
do_cleanups (inner_cleanup);
fprintf_filtered (stream, ";\n");
}
}
/* Print typedefs defined in this class. */
if (TYPE_TYPEDEF_FIELD_COUNT (type) != 0 && flags->print_typedefs)
{
if (TYPE_NFIELDS (type) != 0 || TYPE_NFN_FIELDS (type) != 0)
fprintf_filtered (stream, "\n");
for (i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (type); i++)
{
struct type *target = TYPE_TYPEDEF_FIELD_TYPE (type, i);
/* Dereference the typedef declaration itself. */
gdb_assert (TYPE_CODE (target) == TYPE_CODE_TYPEDEF);
target = TYPE_TARGET_TYPE (target);
print_spaces_filtered (level + 4, stream);
fprintf_filtered (stream, "typedef ");
/* We want to print typedefs with substitutions
from the template parameters or globally-known
typedefs but not local typedefs. */
c_print_type (target,
TYPE_TYPEDEF_FIELD_NAME (type, i),
stream, show - 1, level + 4,
&semi_local_flags);
fprintf_filtered (stream, ";\n");
}
}
fprintfi_filtered (level, stream, "}");
}
do_cleanups (local_cleanups);
}
break;
case TYPE_CODE_ENUM:
c_type_print_modifier (type, stream, 0, 1);
fprintf_filtered (stream, "enum ");
if (TYPE_DECLARED_CLASS (type))
fprintf_filtered (stream, "class ");
/* Print the tag name if it exists.
The aCC compiler emits a spurious
"{unnamed struct}"/"{unnamed union}"/"{unnamed enum}"
tag for unnamed struct/union/enum's, which we don't
want to print. */
if (TYPE_TAG_NAME (type) != NULL
&& !startswith (TYPE_TAG_NAME (type), "{unnamed"))
{
print_name_maybe_canonical (TYPE_TAG_NAME (type), flags, stream);
if (show > 0)
fputs_filtered (" ", stream);
}
wrap_here (" ");
if (show < 0)
{
/* If we just printed a tag name, no need to print anything
else. */
if (TYPE_TAG_NAME (type) == NULL)
fprintf_filtered (stream, "{...}");
}
else if (show > 0 || TYPE_TAG_NAME (type) == NULL)
{
LONGEST lastval = 0;
/* We can't handle this case perfectly, as DWARF does not
tell us whether or not the underlying type was specified
in the source (and other debug formats don't provide this
at all). We choose to print the underlying type, if it
has a name, when in C++ on the theory that it's better to
print too much than too little; but conversely not to
print something egregiously outside the current
language's syntax. */
if (current_language->la_language == language_cplus
&& TYPE_TARGET_TYPE (type) != NULL)
{
struct type *underlying = check_typedef (TYPE_TARGET_TYPE (type));
if (TYPE_NAME (underlying) != NULL)
fprintf_filtered (stream, ": %s ", TYPE_NAME (underlying));
}
fprintf_filtered (stream, "{");
len = TYPE_NFIELDS (type);
for (i = 0; i < len; i++)
{
QUIT;
if (i)
fprintf_filtered (stream, ", ");
wrap_here (" ");
fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
if (lastval != TYPE_FIELD_ENUMVAL (type, i))
{
fprintf_filtered (stream, " = %s",
plongest (TYPE_FIELD_ENUMVAL (type, i)));
lastval = TYPE_FIELD_ENUMVAL (type, i);
}
lastval++;
}
fprintf_filtered (stream, "}");
}
break;
case TYPE_CODE_FLAGS:
{
struct type_print_options local_flags = *flags;
local_flags.local_typedefs = NULL;
c_type_print_modifier (type, stream, 0, 1);
fprintf_filtered (stream, "flag ");
print_name_maybe_canonical (TYPE_NAME (type), flags, stream);
if (show > 0)
{
fputs_filtered (" ", stream);
fprintf_filtered (stream, "{\n");
if (TYPE_NFIELDS (type) == 0)
{
if (TYPE_STUB (type))
fprintfi_filtered (level + 4, stream,
_("<incomplete type>\n"));
else
fprintfi_filtered (level + 4, stream,
_("<no data fields>\n"));
}
len = TYPE_NFIELDS (type);
for (i = 0; i < len; i++)
{
QUIT;
print_spaces_filtered (level + 4, stream);
/* We pass "show" here and not "show - 1" to get enum types
printed. There's no other way to see them. */
c_print_type (TYPE_FIELD_TYPE (type, i),
TYPE_FIELD_NAME (type, i),
stream, show, level + 4,
&local_flags);
fprintf_filtered (stream, " @%s",
plongest (TYPE_FIELD_BITPOS (type, i)));
if (TYPE_FIELD_BITSIZE (type, i) > 1)
{
fprintf_filtered (stream, "-%s",
plongest (TYPE_FIELD_BITPOS (type, i)
+ TYPE_FIELD_BITSIZE (type, i)
- 1));
}
fprintf_filtered (stream, ";\n");
}
fprintfi_filtered (level, stream, "}");
}
}
break;
case TYPE_CODE_VOID:
fprintf_filtered (stream, "void");
break;
case TYPE_CODE_UNDEF:
fprintf_filtered (stream, _("struct <unknown>"));
break;
case TYPE_CODE_ERROR:
fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
break;
case TYPE_CODE_RANGE:
/* This should not occur. */
fprintf_filtered (stream, _("<range type>"));
break;
case TYPE_CODE_NAMESPACE:
fputs_filtered ("namespace ", stream);
fputs_filtered (TYPE_TAG_NAME (type), stream);
break;
default:
/* Handle types not explicitly handled by the other cases, such
as fundamental types. For these, just print whatever the
type name is, as recorded in the type itself. If there is no
type name, then complain. */
if (TYPE_NAME (type) != NULL)
{
c_type_print_modifier (type, stream, 0, 1);
print_name_maybe_canonical (TYPE_NAME (type), flags, stream);
}
else
{
/* At least for dump_symtab, it is important that this not
be an error (). */
fprintf_filtered (stream, _("<invalid type code %d>"),
TYPE_CODE (type));
}
break;
}
}
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