From 84832e0528058662f1294e40dfd506ea0133487b Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Tue, 24 Oct 2000 08:23:06 +0000 Subject: Update. * malloc/obstack.c (_obstack_newchunk): Correctly align first returned block. * malloc/tst-obstack.c: New file. Patch and test case by Alexandre Duret-Lutz . --- malloc/tst-obstack.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 malloc/tst-obstack.c (limited to 'malloc/tst-obstack.c') diff --git a/malloc/tst-obstack.c b/malloc/tst-obstack.c new file mode 100644 index 0000000000..bd00a0ab7b --- /dev/null +++ b/malloc/tst-obstack.c @@ -0,0 +1,54 @@ +/* Test case by Alexandre Duret-Lutz . */ +#include +#include +#include +#include + +#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 (%u) => %p\n", size, buf); + return buf; +} + +static void +verbose_free (void *buf) +{ + free (buf); + printf ("free (%p)\n", buf); +} + +int +main (void) +{ + struct obstack obs; + int i; + int result = 0; + + 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); + + return result; +} -- cgit v1.2.3