summaryrefslogtreecommitdiff
path: root/libiberty/testsuite/test-demangle.c
blob: 1c982d6ef20cabb742575bb7ba300f51a19fc6bc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
/* Demangler test program,
   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
   Written by Zack Weinberg <zack@codesourcery.com

   This file is part of GNU libiberty.

   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 2 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, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 
*/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ansidecl.h"
#include <stdio.h>
#include "libiberty.h"
#include "demangle.h"
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#if HAVE_STDLIB_H
# include <stdlib.h>
#endif

struct line
{
  size_t alloced;
  char *data;
};

static unsigned int lineno;

/* Safely read a single line of arbitrary length from standard input.  */

#define LINELEN 80

static void
get_line(buf)
     struct line *buf;
{
  char *data = buf->data;
  size_t alloc = buf->alloced;
  size_t count = 0;
  int c;

  if (data == 0)
    {
      data = xmalloc (LINELEN);
      alloc = LINELEN;
    }

  /* Skip comment lines.  */
  while ((c = getchar()) == '#')
    {
      while ((c = getchar()) != EOF && c != '\n');
      lineno++;
    }

  /* c is the first character on the line, and it's not a comment
     line: copy this line into the buffer and return.  */
  while (c != EOF && c != '\n')
    {
      if (count + 1 >= alloc)
	{
	  alloc *= 2;
	  data = xrealloc (data, alloc);
	}
      data[count++] = c;
      c = getchar();
    }
  lineno++;
  data[count] = '\0';

  buf->data = data;
  buf->alloced = alloc;
}

/* If we have mmap() and mprotect(), copy the string S just before a
   protected page, so that if the demangler runs over the end of the
   string we'll get a fault, and return the address of the new string.
   If no mmap, or it fails, or it looks too hard, just return S.  */

#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#if defined(MAP_ANON) && ! defined (MAP_ANONYMOUS)
#define MAP_ANONYMOUS MAP_ANON
#endif

static const char *
protect_end (const char * s)
{
#if defined(HAVE_MMAP) && defined (MAP_ANONYMOUS)
  size_t pagesize = getpagesize();
  static char * buf;
  size_t s_len = strlen (s);
  char * result;
  
  /* Don't try if S is too long.  */
  if (s_len >= pagesize)
    return s;

  /* Allocate one page of allocated space followed by an unmapped
     page.  */
  if (buf == NULL)
    {
      buf = mmap (NULL, pagesize * 2, PROT_READ | PROT_WRITE,
		  MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
      if (! buf)
	return s;
      munmap (buf + pagesize, pagesize);
    }
  
  result = buf + (pagesize - s_len - 1);
  memcpy (result, s, s_len + 1);
  return result;
#else
  return s;
#endif
}

static void
fail (lineno, opts, in, out, exp)
     int lineno;
     const char *opts;
     const char *in;
     const char *out;
     const char *exp;
{
  printf ("\
FAIL at line %d, options %s:\n\
in:  %s\n\
out: %s\n\
exp: %s\n",
	  lineno, opts, in, out != NULL ? out : "(null)", exp);
}

/* The tester operates on a data file consisting of groups of lines:
   options
   input to be demangled
   expected output

   Supported options:
     --format=<name>     Sets the demangling style.
     --no-params         There are two lines of expected output; the first
                         is with DMGL_PARAMS, the second is without it.
     --is-v3-ctor        Calls is_gnu_v3_mangled_ctor on input; expected
                         output is an integer representing ctor_kind.
     --is-v3-dtor        Likewise, but for dtors.
     --ret-postfix       Passes the DMGL_RET_POSTFIX option

   For compatibility, just in case it matters, the options line may be
   empty, to mean --format=auto.  If it doesn't start with --, then it
   may contain only a format name.
*/

int
main(argc, argv)
     int argc;
     char **argv;
{
  enum demangling_styles style = auto_demangling;
  int no_params;
  int is_v3_ctor;
  int is_v3_dtor;
  int ret_postfix;
  struct line format;
  struct line input;
  struct line expect;
  char *result;
  int failures = 0;
  int tests = 0;

  if (argc > 1)
    {
      fprintf (stderr, "usage: %s < test-set\n", argv[0]);
      return 2;
    }

  format.data = 0;
  input.data = 0;
  expect.data = 0;

  for (;;)
    {
      const char *inp;
      
      get_line (&format);
      if (feof (stdin))
	break;

      get_line (&input);
      get_line (&expect);

      inp = protect_end (input.data);

      tests++;

      no_params = 0;
      ret_postfix = 0;
      is_v3_ctor = 0;
      is_v3_dtor = 0;
      if (format.data[0] == '\0')
	style = auto_demangling;
      else if (format.data[0] != '-')
	{
	  style = cplus_demangle_name_to_style (format.data);
	  if (style == unknown_demangling)
	    {
	      printf ("FAIL at line %d: unknown demangling style %s\n",
		      lineno, format.data);
	      failures++;
	      continue;
	    }
	}
      else
	{
	  char *p;
	  char *opt;

	  p = format.data;
	  while (*p != '\0')
	    {
	      char c;

	      opt = p;
	      p += strcspn (p, " \t=");
	      c = *p;
	      *p = '\0';
	      if (strcmp (opt, "--format") == 0 && c == '=')
		{
		  char *fstyle;

		  *p = c;
		  ++p;
		  fstyle = p;
		  p += strcspn (p, " \t");
		  c = *p;
		  *p = '\0';
		  style = cplus_demangle_name_to_style (fstyle);
		  if (style == unknown_demangling)
		    {
		      printf ("FAIL at line %d: unknown demangling style %s\n",
			      lineno, fstyle);
		      failures++;
		      continue;
		    }
		}
	      else if (strcmp (opt, "--no-params") == 0)
		no_params = 1;
	      else if (strcmp (opt, "--is-v3-ctor") == 0)
		is_v3_ctor = 1;
	      else if (strcmp (opt, "--is-v3-dtor") == 0)
		is_v3_dtor = 1;
	      else if (strcmp (opt, "--ret-postfix") == 0)
		ret_postfix = 1;
	      else
		{
		  printf ("FAIL at line %d: unrecognized option %s\n",
			  lineno, opt);
		  failures++;
		  continue;
		}
	      *p = c;
	      p += strspn (p, " \t");
	    }
	}

      if (is_v3_ctor || is_v3_dtor)
	{
	  char buf[20];

	  if (is_v3_ctor)
	    {
	      enum gnu_v3_ctor_kinds kc;

	      kc = is_gnu_v3_mangled_ctor (inp);
	      sprintf (buf, "%d", (int) kc);
	    }
	  else
	    {
	      enum gnu_v3_dtor_kinds kd;

	      kd = is_gnu_v3_mangled_dtor (inp);
	      sprintf (buf, "%d", (int) kd);
	    }

	  if (strcmp (buf, expect.data) != 0)
	    {
	      fail (lineno, format.data, input.data, buf, expect.data);
	      failures++;
	    }

	  continue;
	}

      cplus_demangle_set_style (style);

      result = cplus_demangle (inp,
			       DMGL_PARAMS|DMGL_ANSI|DMGL_TYPES
			       |(ret_postfix ? DMGL_RET_POSTFIX : 0));

      if (result
	  ? strcmp (result, expect.data)
	  : strcmp (input.data, expect.data))
	{
	  fail (lineno, format.data, input.data, result, expect.data);
	  failures++;
	}
      free (result);

      if (no_params)
	{
	  get_line (&expect);
	  result = cplus_demangle (inp, DMGL_ANSI|DMGL_TYPES);

	  if (result
	      ? strcmp (result, expect.data)
	      : strcmp (input.data, expect.data))
	    {
	      fail (lineno, format.data, input.data, result, expect.data);
	      failures++;
	    }
	  free (result);
	}
    }

  free (format.data);
  free (input.data);
  free (expect.data);

  printf ("%s: %d tests, %d failures\n", argv[0], tests, failures);
  return failures ? 1 : 0;
}