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/* 
TEST_HEADER
 id = $Id: //info.ravenbrook.com/project/mps/master/test/function/160.c#9 $
 summary = MVFF debug fenceposting check
 language = c
 link = testlib.o
OUTPUT_SPEC
 assert = true
 assertfile P= dbgpool.c
END_HEADER
*/

#include "testlib.h"
#include "mpscmvff.h"
#include "mpsavm.h"

mps_arena_t arena;

static mps_pool_debug_option_s debugOpts = {(void *)"bibblebo", 8};

static void test(void *stack_pointer)
{
 mps_thr_t thread;
 mps_pool_t pool;
 mps_addr_t a;
 char *c;

 cdie(mps_arena_create(&arena, mps_arena_class_vm(),
  (size_t) (1024*1024*50)), "create arena");
 cdie(mps_thread_reg(&thread, arena), "register thread");

 MPS_ARGS_BEGIN(args) {
   MPS_ARGS_ADD(args, MPS_KEY_POOL_DEBUG_OPTIONS, &debugOpts);
   die(mps_pool_create_k(&pool, arena, mps_class_mvff_debug(), args),
       "create MVFF pool");
 } MPS_ARGS_END(args);
 die(mps_alloc(&a, pool, 64), "alloc a");
 
 c = a;
 c -= 1;
 *c = 0;
 
 mps_pool_check_fenceposts(pool);
 comment("Fencepost check.");

 c += 67;
 *c = 0;

 mps_pool_check_fenceposts(pool);
 comment("Fencepost check.");

 mps_pool_destroy(pool);
 mps_thread_dereg(thread);
 mps_arena_destroy(arena);
}

int main(void) {
 run_test(test);
 pass();
 return 0;
}