Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/gmp-source/tests/memory.c

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+/* Memory allocation used during tests.
+
+Copyright 2001, 2002, 2007, 2013 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library test suite.
+
+The GNU MP Library test suite 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.
+
+The GNU MP Library test suite 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
+the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */
+
+#include <stdio.h>
+#include <stdlib.h>		/* for abort */
+#include <string.h>		/* for memcpy, memcmp */
+#include "gmp-impl.h"
+#include "tests.h"
+
+#if GMP_LIMB_BITS == 64
+#define PATTERN1 CNST_LIMB(0xcafebabedeadbeef)
+#define PATTERN2 CNST_LIMB(0xabacadabaedeedab)
+#else
+#define PATTERN1 CNST_LIMB(0xcafebabe)
+#define PATTERN2 CNST_LIMB(0xdeadbeef)
+#endif
+
+#if HAVE_INTPTR_T
+#define PTRLIMB(p)  ((mp_limb_t) (intptr_t) p)
+#else
+#define PTRLIMB(p)  ((mp_limb_t) (size_t) p)
+#endif
+
+/* Each block allocated is a separate malloc, for the benefit of a redzoning
+   malloc debugger during development or when bug hunting.
+
+   Sizes passed when reallocating or freeing are checked (the default
+   routines don't care about these).
+
+   Memory leaks are checked by requiring that all blocks have been freed
+   when tests_memory_end() is called.  Test programs must be sure to have
+   "clear"s for all temporary variables used.  */
+
+
+struct header {
+  void           *ptr;
+  size_t         size;
+  struct header  *next;
+};
+
+struct header  *tests_memory_list = NULL;
+
+/* Return a pointer to a pointer to the found block (so it can be updated
+   when unlinking). */
+struct header **
+tests_memory_find (void *ptr)
+{
+  struct header  **hp;
+
+  for (hp = &tests_memory_list; *hp != NULL; hp = &((*hp)->next))
+    if ((*hp)->ptr == ptr)
+      return hp;
+
+  return NULL;
+}
+
+int
+tests_memory_valid (void *ptr)
+{
+  return (tests_memory_find (ptr) != NULL);
+}
+
+void *
+tests_allocate (size_t size)
+{
+  struct header  *h;
+  void *rptr, *ptr;
+  mp_limb_t PATTERN2_var;
+
+  if (size == 0)
+    {
+      fprintf (stderr, "tests_allocate(): attempt to allocate 0 bytes\n");
+      abort ();
+    }
+
+  h = (struct header *) __gmp_default_allocate (sizeof (*h));
+  h->next = tests_memory_list;
+  tests_memory_list = h;
+
+  rptr = __gmp_default_allocate (size + 2 * sizeof (mp_limb_t));
+  ptr = (void *) ((gmp_intptr_t) rptr + sizeof (mp_limb_t));
+
+  *((mp_limb_t *) ((gmp_intptr_t) ptr - sizeof (mp_limb_t)))
+    = PATTERN1 - PTRLIMB (ptr);
+  PATTERN2_var = PATTERN2 - PTRLIMB (ptr);
+  memcpy ((void *) ((gmp_intptr_t) ptr + size), &PATTERN2_var, sizeof (mp_limb_t));
+
+  h->size = size;
+  h->ptr = ptr;
+  return h->ptr;
+}
+
+void *
+tests_reallocate (void *ptr, size_t old_size, size_t new_size)
+{
+  struct header  **hp, *h;
+  void *rptr;
+  mp_limb_t PATTERN2_var;
+
+  if (new_size == 0)
+    {
+      fprintf (stderr, "tests_reallocate(): attempt to reallocate %p to 0 bytes\n",
+	       ptr);
+      abort ();
+    }
+
+  hp = tests_memory_find (ptr);
+  if (hp == NULL)
+    {
+      fprintf (stderr, "tests_reallocate(): attempt to reallocate bad pointer %p\n",
+	       ptr);
+      abort ();
+    }
+  h = *hp;
+
+  if (h->size != old_size)
+    {
+      fprintf (stderr, "tests_reallocate(): bad old size %lu, should be %lu\n",
+	       (unsigned long) old_size, (unsigned long) h->size);
+      abort ();
+    }
+
+  if (*((mp_limb_t *) ((gmp_intptr_t) ptr - sizeof (mp_limb_t)))
+      != PATTERN1 - PTRLIMB (ptr))
+    {
+      fprintf (stderr, "in realloc: redzone clobbered before block\n");
+      abort ();
+    }
+  PATTERN2_var = PATTERN2 - PTRLIMB (ptr);
+  if (memcmp ((void *) ((gmp_intptr_t) ptr + h->size), &PATTERN2_var, sizeof (mp_limb_t)))
+    {
+      fprintf (stderr, "in realloc: redzone clobbered after block\n");
+      abort ();
+    }
+
+  rptr = __gmp_default_reallocate ((void *) ((gmp_intptr_t) ptr - sizeof (mp_limb_t)),
+				 old_size + 2 * sizeof (mp_limb_t),
+				 new_size + 2 * sizeof (mp_limb_t));
+  ptr = (void *) ((gmp_intptr_t) rptr + sizeof (mp_limb_t));
+
+  *((mp_limb_t *) ((gmp_intptr_t) ptr - sizeof (mp_limb_t)))
+    = PATTERN1 - PTRLIMB (ptr);
+  PATTERN2_var = PATTERN2 - PTRLIMB (ptr);
+  memcpy ((void *) ((gmp_intptr_t) ptr + new_size), &PATTERN2_var, sizeof (mp_limb_t));
+
+  h->size = new_size;
+  h->ptr = ptr;
+  return h->ptr;
+}
+
+struct header **
+tests_free_find (void *ptr)
+{
+  struct header  **hp = tests_memory_find (ptr);
+  if (hp == NULL)
+    {
+      fprintf (stderr, "tests_free(): attempt to free bad pointer %p\n",
+	       ptr);
+      abort ();
+    }
+  return hp;
+}
+
+void
+tests_free_nosize (void *ptr)
+{
+  struct header  **hp = tests_free_find (ptr);
+  struct header  *h = *hp;
+  mp_limb_t PATTERN2_var;
+
+  *hp = h->next;  /* unlink */
+
+  if (*((mp_limb_t *) ((gmp_intptr_t) ptr - sizeof (mp_limb_t)))
+      != PATTERN1 - PTRLIMB (ptr))
+    {
+      fprintf (stderr, "in free: redzone clobbered before block\n");
+      abort ();
+    }
+  PATTERN2_var = PATTERN2 - PTRLIMB (ptr);
+  if (memcmp ((void *) ((gmp_intptr_t) ptr + h->size), &PATTERN2_var, sizeof (mp_limb_t)))
+    {
+      fprintf (stderr, "in free: redzone clobbered after block\n");
+      abort ();
+    }
+
+  __gmp_default_free ((void *) ((gmp_intptr_t) ptr - sizeof(mp_limb_t)),
+		      h->size + 2 * sizeof (mp_limb_t));
+  __gmp_default_free (h, sizeof (*h));
+}
+
+void
+tests_free (void *ptr, size_t size)
+{
+  struct header  **hp = tests_free_find (ptr);
+  struct header  *h = *hp;
+
+  if (h->size != size)
+    {
+      fprintf (stderr, "tests_free(): bad size %lu, should be %lu\n",
+	       (unsigned long) size, (unsigned long) h->size);
+      abort ();
+    }
+
+  tests_free_nosize (ptr);
+}
+
+void
+tests_memory_start (void)
+{
+  mp_set_memory_functions (tests_allocate, tests_reallocate, tests_free);
+}
+
+void
+tests_memory_end (void)
+{
+  if (tests_memory_list != NULL)
+    {
+      struct header  *h;
+      unsigned  count;
+
+      fprintf (stderr, "tests_memory_end(): not all memory freed\n");
+
+      count = 0;
+      for (h = tests_memory_list; h != NULL; h = h->next)
+	count++;
+
+      fprintf (stderr, "    %u blocks remaining\n", count);
+      abort ();
+    }
+}