Viewing file:  pr36908.c (1.45 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O2 -ftree-loop-distribution" } */
#define NULL ((void *)0)
__extension__ typedef __SIZE_TYPE__ size_t;
extern void *foo(size_t nelem, size_t elsize);
extern void bar (char*, ...);
typedef struct alt_state *alt_state_t;
typedef struct state *state_t;
struct alt_state
{
alt_state_t next_alt_state;
};
static alt_state_t first_free_alt_state = NULL;
static void
free_alt_state (alt_state_t alt_state)
{
if (alt_state == NULL)
return;
alt_state->next_alt_state = first_free_alt_state;
first_free_alt_state = alt_state;
}
/* The function frees list started with node ALT_STATE_LIST. */
static void
free_alt_states (alt_state_t alt_states_list)
{
alt_state_t curr_alt_state;
alt_state_t next_alt_state;
for (curr_alt_state = alt_states_list;
curr_alt_state != NULL;
curr_alt_state = next_alt_state)
{
next_alt_state = curr_alt_state->next_alt_state;
free_alt_state (curr_alt_state);
}
}
int
main (void)
{
int i;
alt_state_t state, act_state;
act_state = state = foo (1, sizeof (struct alt_state));
for (i = 0; i < 2; i ++)
{
act_state->next_alt_state = foo (1, sizeof (struct alt_state));
act_state = act_state->next_alt_state;
}
free_alt_states (state);
for (act_state = first_free_alt_state;
act_state != NULL;
act_state = act_state->next_alt_state)
bar ("going from %p to %p\n", act_state, act_state->next_alt_state);
return 0;
}
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