import tests from glibc

test/malloc/tst-calloc.c

@@ -0,0 +1,126 @@
+/* Copyright (C) 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <error.h>
+#include <limits.h>
+#include <malloc.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+
+/* Number of samples per size.  */
+#define N 50000
+
+
+static void
+fixed_test (int size)
+{
+  char *ptrs[N];
+  int i;
+
+  for (i = 0; i < N; ++i)
+    {
+      int j;
+
+      ptrs[i] = (char *) calloc (1, size);
+
+      if (ptrs[i] == NULL)
+	break;
+
+      for (j = 0; j < size; ++j)
+	{
+	  if (ptrs[i][j] != '\0')
+	    error (EXIT_FAILURE, 0,
+		   "byte not cleared (size %d, element %d, byte %d)",
+		   size, i, j);
+	  ptrs[i][j] = '\xff';
+	}
+    }
+
+  while (i-- > 0)
+    free (ptrs[i]);
+}
+
+
+static void
+random_test (void)
+{
+  char *ptrs[N];
+  int i;
+
+  for (i = 0; i < N; ++i)
+    {
+      int j;
+      int n = 1 + random () % 10;
+      int elem = 1 + random () % 100;
+      int size = n * elem;
+
+      ptrs[i] = (char *) calloc (n, elem);
+
+      if (ptrs[i] == NULL)
+	break;
+
+      for (j = 0; j < size; ++j)
+	{
+	  if (ptrs[i][j] != '\0')
+	    error (EXIT_FAILURE, 0,
+		   "byte not cleared (size %d, element %d, byte %d)",
+		   size, i, j);
+	  ptrs[i][j] = '\xff';
+	}
+    }
+
+  while (i-- > 0)
+    free (ptrs[i]);
+}
+
+
+static void
+null_test (void)
+{
+  /* If the size is 0 the result is implementation defined.  Just make
+     sure the program doesn't crash.  */
+  calloc (0, 0);
+  calloc (0, UINT_MAX);
+  calloc (UINT_MAX, 0);
+  calloc (0, ~((size_t) 0));
+  calloc (~((size_t) 0), 0);
+}
+
+
+int
+main (void)
+{
+  /* We are allocating blocks with `calloc' and check whether every
+     block is completely cleared.  We first try this for some fixed
+     times and then with random size.  */
+  fixed_test (15);
+  fixed_test (5);
+  fixed_test (17);
+  fixed_test (6);
+  fixed_test (31);
+  fixed_test (96);
+
+  random_test ();
+
+  null_test ();
+
+  return 0;
+}

test/malloc/tst-malloc.c

@@ -0,0 +1,68 @@
+/* Copyright (C) 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1999.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <malloc.h>
+#include <stdio.h>
+
+static int errors = 0;
+
+static void
+merror (const char *msg)
+{
+  ++errors;
+  printf ("Error: %s\n", msg);
+}
+
+int
+main (void)
+{
+  void *p;
+  int save;
+
+  errno = 0;
+
+  p = malloc (-1);
+  save = errno;
+
+  if (p != NULL)
+    merror ("malloc (-1) succeeded.");
+
+  if (p == NULL && save != ENOMEM)
+    merror ("errno is not set correctly");
+
+  p = malloc (10);
+  if (p == NULL)
+    merror ("malloc (10) failed.");
+
+  /* realloc (p, 0) == free (p).  */
+  p = realloc (p, 0);
+  if (p != NULL)
+    merror ("realloc (p, 0) failed.");
+
+  p = malloc (0);
+  if (p == NULL)
+    merror ("malloc (0) failed.");
+
+  p = realloc (p, 0);
+  if (p != NULL)
+    merror ("realloc (p, 0) failed.");
+
+  return errors != 0;
+}

test/malloc/tst-mallocfork.c

@@ -0,0 +1,51 @@
+/* Derived from the test case in
+   http://sourceware.org/bugzilla/show_bug.cgi?id=838.  */
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+static void
+sig_handler (int signum)
+{
+  pid_t child = fork ();
+  if (child == 0)
+    exit (0);
+  TEMP_FAILURE_RETRY (waitpid (child, NULL, 0));
+}
+
+static int
+do_test (void)
+{
+  pid_t parent = getpid ();
+
+  struct sigaction action = { .sa_handler = sig_handler };
+  sigemptyset (&action.sa_mask);
+
+  malloc (sizeof (int));
+
+  if (sigaction (SIGALRM, &action, NULL) != 0)
+    {
+      puts ("sigaction failed");
+      return 1;
+    }
+
+  /* Create a child that sends the signal to be caught.  */
+  pid_t child = fork ();
+  if (child == 0)
+    {
+      if (kill (parent, SIGALRM) == -1)
+	perror ("kill");
+      exit (0);
+    }
+
+  TEMP_FAILURE_RETRY (waitpid (child, NULL, 0));
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"

test/malloc/tst-mcheck.c

@@ -0,0 +1,91 @@
+/* Copyright (C) 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2005.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static int errors = 0;
+
+static void
+merror (const char *msg)
+{
+  ++errors;
+  printf ("Error: %s\n", msg);
+}
+
+int
+main (void)
+{
+  void *p, *q;
+
+  errno = 0;
+
+  p = malloc (-1);
+
+  if (p != NULL)
+    merror ("malloc (-1) succeeded.");
+  else if (errno != ENOMEM)
+    merror ("errno is not set correctly.");
+
+  p = malloc (10);
+  if (p == NULL)
+    merror ("malloc (10) failed.");
+
+  p = realloc (p, 0);
+  if (p != NULL)
+    merror ("realloc (p, 0) failed.");
+
+  p = malloc (0);
+  if (p == NULL)
+    merror ("malloc (0) failed.");
+
+  p = realloc (p, 0);
+  if (p != NULL)
+    merror ("realloc (p, 0) failed.");
+
+  q = malloc (256);
+  if (q == NULL)
+    merror ("malloc (256) failed.");
+
+  p = malloc (512);
+  if (p == NULL)
+    merror ("malloc (512) failed.");
+
+  if (realloc (p, -256) != NULL)
+    merror ("realloc (p, -256) succeeded.");
+  else if (errno != ENOMEM)
+    merror ("errno is not set correctly.");
+
+  free (p);
+
+  p = malloc (512);
+  if (p == NULL)
+    merror ("malloc (512) failed.");
+
+  if (realloc (p, -1) != NULL)
+    merror ("realloc (p, -1) succeeded.");
+  else if (errno != ENOMEM)
+    merror ("errno is not set correctly.");
+
+  free (p);
+  free (q);
+
+  return errors != 0;
+}

test/malloc/tst-obstack.c

@@ -0,0 +1,64 @@
+/* Test case by Alexandre Duret-Lutz <duret_g@epita.fr>.  */
+#include <obstack.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define obstack_chunk_alloc verbose_malloc
+#define obstack_chunk_free verbose_free
+#define ALIGN_BOUNDARY 64
+#define ALIGN_MASK (ALIGN_BOUNDARY - 1)
+#define OBJECT_SIZE 1000
+
+static void *
+verbose_malloc (size_t size)
+{
+  void *buf = malloc (size);
+  printf ("malloc (%zu) => %p\n", size, buf);
+  return buf;
+}
+
+static void
+verbose_free (void *buf)
+{
+  free (buf);
+  printf ("free (%p)\n", buf);
+}
+
+int
+main (void)
+{
+  int result = 0;
+  int align = 2;
+
+  while (align <= 64)
+    {
+      struct obstack obs;
+      int i;
+      int align_mask = align - 1;
+
+      printf ("\n Alignment mask: %d\n", align_mask);
+
+      obstack_init (&obs);
+      obstack_alignment_mask (&obs) = align_mask;
+      /* finish an empty object to take alignment into account */
+      obstack_finish (&obs);
+
+      /* let's allocate some objects and print their addresses */
+      for (i = 15; i > 0; --i)
+	{
+	  void *obj = obstack_alloc (&obs, OBJECT_SIZE);
+
+	  printf ("obstack_alloc (%u) => %p \t%s\n", OBJECT_SIZE, obj,
+		  ((uintptr_t) obj & align_mask) ? "(not aligned)" : "");
+	  result |= ((uintptr_t) obj & align_mask) != 0;
+	}
+
+      /* clean up */
+      obstack_free (&obs, 0);
+
+      align <<= 1;
+    }
+
+  return result;
+}

test/malloc/tst-valloc.c

@@ -0,0 +1,23 @@
+/* Test case by Stephen Tweedie <sct@redhat.com>.  */
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main (void)
+{
+  char *p;
+  int pagesize = getpagesize ();
+  int i;
+
+  p = valloc (pagesize);
+  i = (long int) p;
+
+  if ((i & (pagesize-1)) != 0)
+    {
+      fprintf (stderr, "Alignment problem: valloc returns %p\n", p);
+      exit (1);
+    }
+
+  return 0;
+}