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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.c-torture/] [execute/] [builtins/] [vsprintf-chk.c] - Blame information for rev 297

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Line No. Rev Author Line
1 297 jeremybenn 
/* Copyright (C) 2004, 2005  Free Software Foundation.
2 
 
3 
   Ensure builtin __vsprintf_chk performs correctly.  */
4 
 
5 
#include <stdarg.h>
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7 
extern void abort (void);
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typedef __SIZE_TYPE__ size_t;
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extern size_t strlen(const char *);
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extern void *memcpy (void *, const void *, size_t);
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extern char *strcpy (char *, const char *);
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extern int memcmp (const void *, const void *, size_t);
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extern void *memset (void *, int, size_t);
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extern int vsprintf (char *, const char *, va_list);
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#include "chk.h"
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const char s1[] = "123";
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char p[32] = "";
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char *s2 = "defg";
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char *s3 = "FGH";
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char *s4;
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size_t l1 = 1;
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static char buffer[32];
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char *ptr = "barf";
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int
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__attribute__((noinline))
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test1_sub (int i, ...)
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{
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  int ret = 0;
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  va_list ap;
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  va_start (ap, i);
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  switch (i)
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    {
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    case 0:
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      vsprintf (buffer, "foo", ap);
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      break;
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    case 1:
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      ret = vsprintf (buffer, "foo", ap);
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      break;
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    case 2:
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      vsprintf (buffer, "%s", ap);
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      break;
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    case 3:
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      ret = vsprintf (buffer, "%s", ap);
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      break;
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    case 4:
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      vsprintf (buffer, "%d - %c", ap);
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      break;
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    case 5:
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      vsprintf (s4, "%d - %c", ap);
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      break;
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    }
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  va_end (ap);
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  return ret;
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}
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void
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__attribute__((noinline))
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test1 (void)
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{
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  chk_calls = 0;
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  vsprintf_disallowed = 1;
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  memset (buffer, 'A', 32);
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  test1_sub (0);
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  if (memcmp (buffer, "foo", 4) || buffer[4] != 'A')
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    abort ();
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  memset (buffer, 'A', 32);
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  if (test1_sub (1) != 3)
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    abort ();
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  if (memcmp (buffer, "foo", 4) || buffer[4] != 'A')
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    abort ();
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77 
  if (chk_calls)
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    abort ();
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  vsprintf_disallowed = 0;
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  memset (buffer, 'A', 32);
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  test1_sub (2, "bar");
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  if (memcmp (buffer, "bar", 4) || buffer[4] != 'A')
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    abort ();
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  memset (buffer, 'A', 32);
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  if (test1_sub (3, "bar") != 3)
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    abort ();
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  if (memcmp (buffer, "bar", 4) || buffer[4] != 'A')
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    abort ();
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  memset (buffer, 'A', 32);
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  test1_sub (2, ptr);
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  if (memcmp (buffer, "barf", 5) || buffer[5] != 'A')
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    abort ();
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  memset (buffer, 'A', 32);
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  test1_sub (4, (int) l1 + 27, *ptr);
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  if (memcmp (buffer, "28 - b\0AAAAA", 12))
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    abort ();
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  if (chk_calls != 4)
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    abort ();
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  chk_calls = 0;
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  test1_sub (5, (int) l1 - 17, ptr[1]);
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  if (memcmp (s4, "-16 - a", 8))
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    abort ();
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  if (chk_calls)
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    abort ();
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}
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void
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__attribute__((noinline))
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test2_sub (int i, ...)
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{
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  va_list ap;
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  struct A { char buf1[10]; char buf2[10]; } a;
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  char *r = l1 == 1 ? &a.buf1[5] : &a.buf2[4];
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  char buf3[20];
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  int j;
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  va_start (ap, i);
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  /* The following calls should do runtime checking
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     - source length is not known, but destination is.  */
126 
  switch (i)
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    {
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    case 0:
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      vsprintf (a.buf1 + 2, "%s", ap);
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      break;
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    case 1:
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      vsprintf (r, "%s%c", ap);
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      break;
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    case 2:
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      r = l1 == 1 ? __builtin_alloca (4) : &a.buf2[7];
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      vsprintf (r, "%c %s", ap);
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      break;
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    case 3:
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      r = l1 == 1 ? __builtin_alloca (4) : &a.buf2[7];
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      vsprintf (r + 2, s3 + 3, ap);
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      break;
142 
    case 4:
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    case 7:
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      r = buf3;
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      for (j = 0; j < 4; ++j)
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        {
147 
          if (j == l1 - 1)
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            r = &a.buf1[1];
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          else if (j == l1)
150 
            r = &a.buf2[7];
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          else if (j == l1 + 1)
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            r = &buf3[5];
153 
          else if (j == l1 + 2)
154 
            r = &a.buf1[9];
155 
        }
156 
      if (i == 4)
157 
        vsprintf (r, s2 + 4, ap);
158 
      else
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        vsprintf (r, "a", ap);
160 
      break;
161 
    case 5:
162 
      r = l1 == 1 ? __builtin_alloca (4) : &a.buf2[7];
163 
      vsprintf (r, "%s", ap);
164 
      break;
165 
    case 6:
166 
      vsprintf (a.buf1 + 2, "", ap);
167 
      break;
168 
    case 8:
169 
      vsprintf (s4, "%s %d", ap);
170 
      break;
171 
    }
172 
  va_end (ap);
173 
}
174 
 
175 
/* Test whether compile time checking is done where it should
176 
   and so is runtime object size checking.  */
177 
void
178 
__attribute__((noinline))
179 
test2 (void)
180 
{
181 
  /* The following calls should do runtime checking
182 
     - source length is not known, but destination is.  */
183 
  chk_calls = 0;
184 
  test2_sub (0, s3 + 3);
185 
  test2_sub (1, s3 + 3, s3[3]);
186 
  test2_sub (2, s2[2], s2 + 4);
187 
  test2_sub (3);
188 
  test2_sub (4);
189 
  test2_sub (5, s1 + 1);
190 
  if (chk_calls != 6)
191 
    abort ();
192 
 
193 
  /* Following have known destination and known source length,
194 
     so if optimizing certainly shouldn't result in the checking
195 
     variants.  */
196 
  chk_calls = 0;
197 
  vsprintf_disallowed = 1;
198 
  test2_sub (6);
199 
  test2_sub (7);
200 
  vsprintf_disallowed = 0;
201 
  /* Unknown destination and source, no checking.  */
202 
  test2_sub (8, s3, 0);
203 
  if (chk_calls)
204 
    abort ();
205 
}
206 
 
207 
void
208 
__attribute__((noinline))
209 
test3_sub (int i, ...)
210 
{
211 
  va_list ap;
212 
  struct A { char buf1[10]; char buf2[10]; } a;
213 
  char buf3[20];
214 
 
215 
  va_start (ap, i);
216 
  /* The following calls should do runtime checking
217 
     - source length is not known, but destination is.  */
218 
  switch (i)
219 
    {
220 
    case 0:
221 
      vsprintf (&a.buf2[9], "%c%s", ap);
222 
      break;
223 
    case 1:
224 
      vsprintf (&a.buf2[7], "%s%c", ap);
225 
      break;
226 
    case 2:
227 
      vsprintf (&a.buf2[7], "%d", ap);
228 
      break;
229 
    case 3:
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      vsprintf (&buf3[17], "%s", ap);
231 
      break;
232 
    case 4:
233 
      vsprintf (&buf3[19], "a", ap);
234 
      break;
235 
    }
236 
  va_end (ap);
237 
}
238 
 
239 
/* Test whether runtime and/or compile time checking catches
240 
   buffer overflows.  */
241 
void
242 
__attribute__((noinline))
243 
test3 (void)
244 
{
245 
  chk_fail_allowed = 1;
246 
  /* Runtime checks.  */
247 
  if (__builtin_setjmp (chk_fail_buf) == 0)
248 
    {
249 
      test3_sub (0, s2[3], s2 + 4);
250 
      abort ();
251 
    }
252 
  if (__builtin_setjmp (chk_fail_buf) == 0)
253 
    {
254 
      test3_sub (1, s3 + strlen (s3) - 2, *s3);
255 
      abort ();
256 
    }
257 
  if (__builtin_setjmp (chk_fail_buf) == 0)
258 
    {
259 
      test3_sub (2, (int) l1 + 9999);
260 
      abort ();
261 
    }
262 
  if (__builtin_setjmp (chk_fail_buf) == 0)
263 
    {
264 
      test3_sub (3, "abc");
265 
      abort ();
266 
    }
267 
  /* This should be detectable at compile time already.  */
268 
  if (__builtin_setjmp (chk_fail_buf) == 0)
269 
    {
270 
      test3_sub (4);
271 
      abort ();
272 
    }
273 
  chk_fail_allowed = 0;
274 
}
275 
 
276 
void
277 
main_test (void)
278 
{
279 
#ifndef __OPTIMIZE__
280 
  /* Object size checking is only intended for -O[s123].  */
281 
  return;
282 
#endif
283 
  __asm ("" : "=r" (s2) : "0" (s2));
284 
  __asm ("" : "=r" (s3) : "0" (s3));
285 
  __asm ("" : "=r" (l1) : "0" (l1));
286 
  s4 = p;
287 
  test1 ();
288 
  test2 ();
289 
  test3 ();
290 
}

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