1 /* Fortran language support routines for GDB, the GNU debugger.
3 Copyright (C) 1993-2020 Free Software Foundation, Inc.
5 Contributed by Motorola. Adapted from the C parser by Farooq Butt
6 (fmbutt@engage.sps.mot.com).
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "expression.h"
27 #include "parser-defs.h"
34 #include "cp-support.h"
37 #include "target-float.h"
44 /* Return the encoding that should be used for the character type
48 f_get_encoding (struct type
*type
)
52 switch (TYPE_LENGTH (type
))
55 encoding
= target_charset (get_type_arch (type
));
58 if (type_byte_order (type
) == BFD_ENDIAN_BIG
)
59 encoding
= "UTF-32BE";
61 encoding
= "UTF-32LE";
65 error (_("unrecognized character type"));
73 /* Table of operators and their precedences for printing expressions. */
75 static const struct op_print f_op_print_tab
[] =
77 {"+", BINOP_ADD
, PREC_ADD
, 0},
78 {"+", UNOP_PLUS
, PREC_PREFIX
, 0},
79 {"-", BINOP_SUB
, PREC_ADD
, 0},
80 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
81 {"*", BINOP_MUL
, PREC_MUL
, 0},
82 {"/", BINOP_DIV
, PREC_MUL
, 0},
83 {"DIV", BINOP_INTDIV
, PREC_MUL
, 0},
84 {"MOD", BINOP_REM
, PREC_MUL
, 0},
85 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
86 {".OR.", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
87 {".AND.", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
88 {".NOT.", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
89 {".EQ.", BINOP_EQUAL
, PREC_EQUAL
, 0},
90 {".NE.", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
91 {".LE.", BINOP_LEQ
, PREC_ORDER
, 0},
92 {".GE.", BINOP_GEQ
, PREC_ORDER
, 0},
93 {".GT.", BINOP_GTR
, PREC_ORDER
, 0},
94 {".LT.", BINOP_LESS
, PREC_ORDER
, 0},
95 {"**", UNOP_IND
, PREC_PREFIX
, 0},
96 {"@", BINOP_REPEAT
, PREC_REPEAT
, 0},
97 {NULL
, OP_NULL
, PREC_REPEAT
, 0}
100 enum f_primitive_types
{
101 f_primitive_type_character
,
102 f_primitive_type_logical
,
103 f_primitive_type_logical_s1
,
104 f_primitive_type_logical_s2
,
105 f_primitive_type_logical_s8
,
106 f_primitive_type_integer
,
107 f_primitive_type_integer_s2
,
108 f_primitive_type_real
,
109 f_primitive_type_real_s8
,
110 f_primitive_type_real_s16
,
111 f_primitive_type_complex_s8
,
112 f_primitive_type_complex_s16
,
113 f_primitive_type_void
,
117 /* Special expression evaluation cases for Fortran. */
119 static struct value
*
120 evaluate_subexp_f (struct type
*expect_type
, struct expression
*exp
,
121 int *pos
, enum noside noside
)
123 struct value
*arg1
= NULL
, *arg2
= NULL
;
130 op
= exp
->elts
[pc
].opcode
;
136 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
139 arg1
= evaluate_subexp (nullptr, exp
, pos
, noside
);
140 if (noside
== EVAL_SKIP
)
141 return eval_skip_value (exp
);
142 type
= value_type (arg1
);
143 switch (type
->code ())
148 = fabs (target_float_to_host_double (value_contents (arg1
),
150 return value_from_host_double (type
, d
);
154 LONGEST l
= value_as_long (arg1
);
156 return value_from_longest (type
, l
);
159 error (_("ABS of type %s not supported"), TYPE_SAFE_NAME (type
));
162 arg1
= evaluate_subexp (nullptr, exp
, pos
, noside
);
163 arg2
= evaluate_subexp (value_type (arg1
), exp
, pos
, noside
);
164 if (noside
== EVAL_SKIP
)
165 return eval_skip_value (exp
);
166 type
= value_type (arg1
);
167 if (type
->code () != value_type (arg2
)->code ())
168 error (_("non-matching types for parameters to MOD ()"));
169 switch (type
->code ())
174 = target_float_to_host_double (value_contents (arg1
),
177 = target_float_to_host_double (value_contents (arg2
),
179 double d3
= fmod (d1
, d2
);
180 return value_from_host_double (type
, d3
);
184 LONGEST v1
= value_as_long (arg1
);
185 LONGEST v2
= value_as_long (arg2
);
187 error (_("calling MOD (N, 0) is undefined"));
188 LONGEST v3
= v1
- (v1
/ v2
) * v2
;
189 return value_from_longest (value_type (arg1
), v3
);
192 error (_("MOD of type %s not supported"), TYPE_SAFE_NAME (type
));
194 case UNOP_FORTRAN_CEILING
:
196 arg1
= evaluate_subexp (nullptr, exp
, pos
, noside
);
197 if (noside
== EVAL_SKIP
)
198 return eval_skip_value (exp
);
199 type
= value_type (arg1
);
200 if (type
->code () != TYPE_CODE_FLT
)
201 error (_("argument to CEILING must be of type float"));
203 = target_float_to_host_double (value_contents (arg1
),
206 return value_from_host_double (type
, val
);
209 case UNOP_FORTRAN_FLOOR
:
211 arg1
= evaluate_subexp (nullptr, exp
, pos
, noside
);
212 if (noside
== EVAL_SKIP
)
213 return eval_skip_value (exp
);
214 type
= value_type (arg1
);
215 if (type
->code () != TYPE_CODE_FLT
)
216 error (_("argument to FLOOR must be of type float"));
218 = target_float_to_host_double (value_contents (arg1
),
221 return value_from_host_double (type
, val
);
224 case BINOP_FORTRAN_MODULO
:
226 arg1
= evaluate_subexp (nullptr, exp
, pos
, noside
);
227 arg2
= evaluate_subexp (value_type (arg1
), exp
, pos
, noside
);
228 if (noside
== EVAL_SKIP
)
229 return eval_skip_value (exp
);
230 type
= value_type (arg1
);
231 if (type
->code () != value_type (arg2
)->code ())
232 error (_("non-matching types for parameters to MODULO ()"));
233 /* MODULO(A, P) = A - FLOOR (A / P) * P */
234 switch (type
->code ())
238 LONGEST a
= value_as_long (arg1
);
239 LONGEST p
= value_as_long (arg2
);
240 LONGEST result
= a
- (a
/ p
) * p
;
241 if (result
!= 0 && (a
< 0) != (p
< 0))
243 return value_from_longest (value_type (arg1
), result
);
248 = target_float_to_host_double (value_contents (arg1
),
251 = target_float_to_host_double (value_contents (arg2
),
253 double result
= fmod (a
, p
);
254 if (result
!= 0 && (a
< 0.0) != (p
< 0.0))
256 return value_from_host_double (type
, result
);
259 error (_("MODULO of type %s not supported"), TYPE_SAFE_NAME (type
));
262 case BINOP_FORTRAN_CMPLX
:
263 arg1
= evaluate_subexp (nullptr, exp
, pos
, noside
);
264 arg2
= evaluate_subexp (value_type (arg1
), exp
, pos
, noside
);
265 if (noside
== EVAL_SKIP
)
266 return eval_skip_value (exp
);
267 type
= builtin_f_type(exp
->gdbarch
)->builtin_complex_s16
;
268 return value_literal_complex (arg1
, arg2
, type
);
270 case UNOP_FORTRAN_KIND
:
271 arg1
= evaluate_subexp (NULL
, exp
, pos
, EVAL_AVOID_SIDE_EFFECTS
);
272 type
= value_type (arg1
);
274 switch (type
->code ())
276 case TYPE_CODE_STRUCT
:
277 case TYPE_CODE_UNION
:
278 case TYPE_CODE_MODULE
:
280 error (_("argument to kind must be an intrinsic type"));
283 if (!TYPE_TARGET_TYPE (type
))
284 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
,
286 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
,
287 TYPE_LENGTH (TYPE_TARGET_TYPE (type
)));
290 /* Should be unreachable. */
294 /* Special expression lengths for Fortran. */
297 operator_length_f (const struct expression
*exp
, int pc
, int *oplenp
,
303 switch (exp
->elts
[pc
- 1].opcode
)
306 operator_length_standard (exp
, pc
, oplenp
, argsp
);
309 case UNOP_FORTRAN_KIND
:
310 case UNOP_FORTRAN_FLOOR
:
311 case UNOP_FORTRAN_CEILING
:
316 case BINOP_FORTRAN_CMPLX
:
317 case BINOP_FORTRAN_MODULO
:
327 /* Helper for PRINT_SUBEXP_F. Arguments are as for PRINT_SUBEXP_F, except
328 the extra argument NAME which is the text that should be printed as the
329 name of this operation. */
332 print_unop_subexp_f (struct expression
*exp
, int *pos
,
333 struct ui_file
*stream
, enum precedence prec
,
337 fprintf_filtered (stream
, "%s(", name
);
338 print_subexp (exp
, pos
, stream
, PREC_SUFFIX
);
339 fputs_filtered (")", stream
);
342 /* Helper for PRINT_SUBEXP_F. Arguments are as for PRINT_SUBEXP_F, except
343 the extra argument NAME which is the text that should be printed as the
344 name of this operation. */
347 print_binop_subexp_f (struct expression
*exp
, int *pos
,
348 struct ui_file
*stream
, enum precedence prec
,
352 fprintf_filtered (stream
, "%s(", name
);
353 print_subexp (exp
, pos
, stream
, PREC_SUFFIX
);
354 fputs_filtered (",", stream
);
355 print_subexp (exp
, pos
, stream
, PREC_SUFFIX
);
356 fputs_filtered (")", stream
);
359 /* Special expression printing for Fortran. */
362 print_subexp_f (struct expression
*exp
, int *pos
,
363 struct ui_file
*stream
, enum precedence prec
)
366 enum exp_opcode op
= exp
->elts
[pc
].opcode
;
371 print_subexp_standard (exp
, pos
, stream
, prec
);
374 case UNOP_FORTRAN_KIND
:
375 print_unop_subexp_f (exp
, pos
, stream
, prec
, "KIND");
378 case UNOP_FORTRAN_FLOOR
:
379 print_unop_subexp_f (exp
, pos
, stream
, prec
, "FLOOR");
382 case UNOP_FORTRAN_CEILING
:
383 print_unop_subexp_f (exp
, pos
, stream
, prec
, "CEILING");
386 case BINOP_FORTRAN_CMPLX
:
387 print_binop_subexp_f (exp
, pos
, stream
, prec
, "CMPLX");
390 case BINOP_FORTRAN_MODULO
:
391 print_binop_subexp_f (exp
, pos
, stream
, prec
, "MODULO");
396 /* Special expression names for Fortran. */
399 op_name_f (enum exp_opcode opcode
)
404 return op_name_standard (opcode
);
409 #include "fortran-operator.def"
414 /* Special expression dumping for Fortran. */
417 dump_subexp_body_f (struct expression
*exp
,
418 struct ui_file
*stream
, int elt
)
420 int opcode
= exp
->elts
[elt
].opcode
;
426 return dump_subexp_body_standard (exp
, stream
, elt
);
428 case UNOP_FORTRAN_KIND
:
429 case UNOP_FORTRAN_FLOOR
:
430 case UNOP_FORTRAN_CEILING
:
431 case BINOP_FORTRAN_CMPLX
:
432 case BINOP_FORTRAN_MODULO
:
433 operator_length_f (exp
, (elt
+ 1), &oplen
, &nargs
);
438 for (i
= 0; i
< nargs
; i
+= 1)
439 elt
= dump_subexp (exp
, stream
, elt
);
444 /* Special expression checking for Fortran. */
447 operator_check_f (struct expression
*exp
, int pos
,
448 int (*objfile_func
) (struct objfile
*objfile
,
452 const union exp_element
*const elts
= exp
->elts
;
454 switch (elts
[pos
].opcode
)
456 case UNOP_FORTRAN_KIND
:
457 case UNOP_FORTRAN_FLOOR
:
458 case UNOP_FORTRAN_CEILING
:
459 case BINOP_FORTRAN_CMPLX
:
460 case BINOP_FORTRAN_MODULO
:
461 /* Any references to objfiles are held in the arguments to this
462 expression, not within the expression itself, so no additional
463 checking is required here, the outer expression iteration code
464 will take care of checking each argument. */
468 return operator_check_standard (exp
, pos
, objfile_func
, data
);
474 /* Expression processing for Fortran. */
475 static const struct exp_descriptor exp_descriptor_f
=
485 /* Constant data that describes the Fortran language. */
487 extern const struct language_data f_language_data
=
494 false, /* la_store_sym_names_in_linkage_form_p */
495 f_op_print_tab
, /* expression operators for printing */
496 1, /* String lower bound */
500 /* Class representing the Fortran language. */
502 class f_language
: public language_defn
506 : language_defn (language_fortran
, f_language_data
)
509 /* See language.h. */
511 const char *name () const override
512 { return "fortran"; }
514 /* See language.h. */
516 const char *natural_name () const override
517 { return "Fortran"; }
519 /* See language.h. */
521 const std::vector
<const char *> &filename_extensions () const override
523 static const std::vector
<const char *> extensions
= {
524 ".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP",
525 ".f90", ".F90", ".f95", ".F95", ".f03", ".F03", ".f08", ".F08"
530 /* See language.h. */
531 void language_arch_info (struct gdbarch
*gdbarch
,
532 struct language_arch_info
*lai
) const override
534 const struct builtin_f_type
*builtin
= builtin_f_type (gdbarch
);
536 lai
->string_char_type
= builtin
->builtin_character
;
537 lai
->primitive_type_vector
538 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_f_primitive_types
+ 1,
541 lai
->primitive_type_vector
[f_primitive_type_character
]
542 = builtin
->builtin_character
;
543 lai
->primitive_type_vector
[f_primitive_type_logical
]
544 = builtin
->builtin_logical
;
545 lai
->primitive_type_vector
[f_primitive_type_logical_s1
]
546 = builtin
->builtin_logical_s1
;
547 lai
->primitive_type_vector
[f_primitive_type_logical_s2
]
548 = builtin
->builtin_logical_s2
;
549 lai
->primitive_type_vector
[f_primitive_type_logical_s8
]
550 = builtin
->builtin_logical_s8
;
551 lai
->primitive_type_vector
[f_primitive_type_real
]
552 = builtin
->builtin_real
;
553 lai
->primitive_type_vector
[f_primitive_type_real_s8
]
554 = builtin
->builtin_real_s8
;
555 lai
->primitive_type_vector
[f_primitive_type_real_s16
]
556 = builtin
->builtin_real_s16
;
557 lai
->primitive_type_vector
[f_primitive_type_complex_s8
]
558 = builtin
->builtin_complex_s8
;
559 lai
->primitive_type_vector
[f_primitive_type_complex_s16
]
560 = builtin
->builtin_complex_s16
;
561 lai
->primitive_type_vector
[f_primitive_type_void
]
562 = builtin
->builtin_void
;
564 lai
->bool_type_symbol
= "logical";
565 lai
->bool_type_default
= builtin
->builtin_logical_s2
;
568 /* See language.h. */
569 unsigned int search_name_hash (const char *name
) const override
571 return cp_search_name_hash (name
);
574 /* See language.h. */
576 char *demangle (const char *mangled
, int options
) const override
578 /* We could support demangling here to provide module namespaces
579 also for inferiors with only minimal symbol table (ELF symbols).
580 Just the mangling standard is not standardized across compilers
581 and there is no DW_AT_producer available for inferiors with only
582 the ELF symbols to check the mangling kind. */
586 /* See language.h. */
588 void print_type (struct type
*type
, const char *varstring
,
589 struct ui_file
*stream
, int show
, int level
,
590 const struct type_print_options
*flags
) const override
592 f_print_type (type
, varstring
, stream
, show
, level
, flags
);
595 /* See language.h. This just returns default set of word break
596 characters but with the modules separator `::' removed. */
598 const char *word_break_characters (void) const override
606 retval
= xstrdup (language_defn::word_break_characters ());
607 s
= strchr (retval
, ':');
610 char *last_char
= &s
[strlen (s
) - 1];
620 /* See language.h. */
622 void collect_symbol_completion_matches (completion_tracker
&tracker
,
623 complete_symbol_mode mode
,
624 symbol_name_match_type name_match_type
,
625 const char *text
, const char *word
,
626 enum type_code code
) const override
628 /* Consider the modules separator :: as a valid symbol name character
630 default_collect_symbol_completion_matches_break_on (tracker
, mode
,
636 /* See language.h. */
638 void value_print_inner
639 (struct value
*val
, struct ui_file
*stream
, int recurse
,
640 const struct value_print_options
*options
) const override
642 return f_value_print_inner (val
, stream
, recurse
, options
);
645 /* See language.h. */
647 struct block_symbol lookup_symbol_nonlocal
648 (const char *name
, const struct block
*block
,
649 const domain_enum domain
) const override
651 return cp_lookup_symbol_nonlocal (this, name
, block
, domain
);
654 /* See language.h. */
656 int parser (struct parser_state
*ps
) const override
661 /* See language.h. */
663 void emitchar (int ch
, struct type
*chtype
,
664 struct ui_file
*stream
, int quoter
) const override
666 const char *encoding
= f_get_encoding (chtype
);
667 generic_emit_char (ch
, chtype
, stream
, quoter
, encoding
);
670 /* See language.h. */
672 void printchar (int ch
, struct type
*chtype
,
673 struct ui_file
*stream
) const override
675 fputs_filtered ("'", stream
);
676 LA_EMIT_CHAR (ch
, chtype
, stream
, '\'');
677 fputs_filtered ("'", stream
);
680 /* See language.h. */
682 void printstr (struct ui_file
*stream
, struct type
*elttype
,
683 const gdb_byte
*string
, unsigned int length
,
684 const char *encoding
, int force_ellipses
,
685 const struct value_print_options
*options
) const override
687 const char *type_encoding
= f_get_encoding (elttype
);
689 if (TYPE_LENGTH (elttype
) == 4)
690 fputs_filtered ("4_", stream
);
692 if (!encoding
|| !*encoding
)
693 encoding
= type_encoding
;
695 generic_printstr (stream
, elttype
, string
, length
, encoding
,
696 force_ellipses
, '\'', 0, options
);
699 /* See language.h. */
701 void print_typedef (struct type
*type
, struct symbol
*new_symbol
,
702 struct ui_file
*stream
) const override
704 f_print_typedef (type
, new_symbol
, stream
);
707 /* See language.h. */
709 bool is_string_type_p (struct type
*type
) const override
711 type
= check_typedef (type
);
712 return (type
->code () == TYPE_CODE_STRING
713 || (type
->code () == TYPE_CODE_ARRAY
714 && TYPE_TARGET_TYPE (type
)->code () == TYPE_CODE_CHAR
));
717 /* See language.h. */
719 const char *struct_too_deep_ellipsis () const override
722 /* See language.h. */
724 bool c_style_arrays_p () const override
729 /* See language.h. */
731 symbol_name_matcher_ftype
*get_symbol_name_matcher_inner
732 (const lookup_name_info
&lookup_name
) const override
734 return cp_get_symbol_name_matcher (lookup_name
);
738 /* Single instance of the Fortran language class. */
740 static f_language f_language_defn
;
743 build_fortran_types (struct gdbarch
*gdbarch
)
745 struct builtin_f_type
*builtin_f_type
746 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_f_type
);
748 builtin_f_type
->builtin_void
749 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "void");
751 builtin_f_type
->builtin_character
752 = arch_type (gdbarch
, TYPE_CODE_CHAR
, TARGET_CHAR_BIT
, "character");
754 builtin_f_type
->builtin_logical_s1
755 = arch_boolean_type (gdbarch
, TARGET_CHAR_BIT
, 1, "logical*1");
757 builtin_f_type
->builtin_integer_s2
758 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
), 0,
761 builtin_f_type
->builtin_integer_s8
762 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
), 0,
765 builtin_f_type
->builtin_logical_s2
766 = arch_boolean_type (gdbarch
, gdbarch_short_bit (gdbarch
), 1,
769 builtin_f_type
->builtin_logical_s8
770 = arch_boolean_type (gdbarch
, gdbarch_long_long_bit (gdbarch
), 1,
773 builtin_f_type
->builtin_integer
774 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
), 0,
777 builtin_f_type
->builtin_logical
778 = arch_boolean_type (gdbarch
, gdbarch_int_bit (gdbarch
), 1,
781 builtin_f_type
->builtin_real
782 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
783 "real", gdbarch_float_format (gdbarch
));
784 builtin_f_type
->builtin_real_s8
785 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
786 "real*8", gdbarch_double_format (gdbarch
));
787 auto fmt
= gdbarch_floatformat_for_type (gdbarch
, "real(kind=16)", 128);
789 builtin_f_type
->builtin_real_s16
790 = arch_float_type (gdbarch
, 128, "real*16", fmt
);
791 else if (gdbarch_long_double_bit (gdbarch
) == 128)
792 builtin_f_type
->builtin_real_s16
793 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
794 "real*16", gdbarch_long_double_format (gdbarch
));
796 builtin_f_type
->builtin_real_s16
797 = arch_type (gdbarch
, TYPE_CODE_ERROR
, 128, "real*16");
799 builtin_f_type
->builtin_complex_s8
800 = init_complex_type ("complex*8", builtin_f_type
->builtin_real
);
801 builtin_f_type
->builtin_complex_s16
802 = init_complex_type ("complex*16", builtin_f_type
->builtin_real_s8
);
804 if (builtin_f_type
->builtin_real_s16
->code () == TYPE_CODE_ERROR
)
805 builtin_f_type
->builtin_complex_s32
806 = arch_type (gdbarch
, TYPE_CODE_ERROR
, 256, "complex*32");
808 builtin_f_type
->builtin_complex_s32
809 = init_complex_type ("complex*32", builtin_f_type
->builtin_real_s16
);
811 return builtin_f_type
;
814 static struct gdbarch_data
*f_type_data
;
816 const struct builtin_f_type
*
817 builtin_f_type (struct gdbarch
*gdbarch
)
819 return (const struct builtin_f_type
*) gdbarch_data (gdbarch
, f_type_data
);
822 void _initialize_f_language ();
824 _initialize_f_language ()
826 f_type_data
= gdbarch_data_register_post_init (build_fortran_types
);
832 fortran_argument_convert (struct value
*value
, bool is_artificial
)
836 /* If the value is not in the inferior e.g. registers values,
837 convenience variables and user input. */
838 if (VALUE_LVAL (value
) != lval_memory
)
840 struct type
*type
= value_type (value
);
841 const int length
= TYPE_LENGTH (type
);
843 = value_as_long (value_allocate_space_in_inferior (length
));
844 write_memory (addr
, value_contents (value
), length
);
846 = value_from_contents_and_address (type
, value_contents (value
),
848 return value_addr (val
);
851 return value_addr (value
); /* Program variables, e.g. arrays. */
859 fortran_preserve_arg_pointer (struct value
*arg
, struct type
*type
)
861 if (value_type (arg
)->code () == TYPE_CODE_PTR
)
862 return value_type (arg
);