84832e0528
* malloc/obstack.c (_obstack_newchunk): Correctly align first returned block. * malloc/tst-obstack.c: New file. Patch and test case by Alexandre Duret-Lutz <duret_g@epita.fr>.
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
/* Test case by Alexandre Duret-Lutz <duret_g@epita.fr>. */
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#include <obstack.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define obstack_chunk_alloc verbose_malloc
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#define obstack_chunk_free verbose_free
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#define ALIGN_BOUNDARY 64
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#define ALIGN_MASK (ALIGN_BOUNDARY - 1)
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#define OBJECT_SIZE 1000
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static void *
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verbose_malloc (size_t size)
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{
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void *buf = malloc (size);
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printf ("malloc (%u) => %p\n", size, buf);
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return buf;
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}
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static void
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verbose_free (void *buf)
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{
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free (buf);
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printf ("free (%p)\n", buf);
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}
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int
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main (void)
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{
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struct obstack obs;
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int i;
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int result = 0;
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obstack_init (&obs);
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obstack_alignment_mask (&obs) = ALIGN_MASK;
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/* finish an empty object to take alignment into account */
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obstack_finish (&obs);
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/* let's allocate some objects and print their addresses */
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for (i = 15; i > 0; --i)
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{
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void *obj = obstack_alloc (&obs, OBJECT_SIZE);
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printf ("obstack_alloc (%u) => %p \t%s\n", OBJECT_SIZE, obj,
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((uintptr_t) obj & ALIGN_MASK) ? "(not aligned)" : "");
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result |= ((uintptr_t) obj & ALIGN_MASK) != 0;
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}
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/* clean up */
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obstack_free (&obs, 0);
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return result;
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}
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