void * GC_debug_realloc(void * p, size_t lb, GC_EXTRA_PARAMS)
{
void * base = GC_base(p);
ptr_t clobbered;
void * result;
size_t copy_sz = lb;
size_t old_sz;
hdr * hhdr;
if (p == 0) return(GC_debug_malloc(lb, OPT_RA s, i));
if (base == 0) {
GC_err_printf("Attempt to reallocate invalid pointer %p\n", p);
ABORT("realloc(invalid pointer)");
}
if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
GC_err_printf(
"GC_debug_realloc called on pointer %p wo debugging info\n", p);
return(GC_realloc(p, lb));
}
hhdr = HDR(base);
switch (hhdr -> hb_obj_kind) {
# ifdef STUBBORN_ALLOC
case STUBBORN:
result = GC_debug_malloc_stubborn(lb, OPT_RA s, i);
break;
# endif
case NORMAL:
result = GC_debug_malloc(lb, OPT_RA s, i);
break;
case PTRFREE:
result = GC_debug_malloc_atomic(lb, OPT_RA s, i);
break;
case UNCOLLECTABLE:
result = GC_debug_malloc_uncollectable(lb, OPT_RA s, i);
break;
# ifdef ATOMIC_UNCOLLECTABLE
case AUNCOLLECTABLE:
result = GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i);
break;
# endif
default:
GC_err_printf("GC_debug_realloc: encountered bad kind\n");
ABORT("bad kind");
}
# ifdef SHORT_DBG_HDRS
old_sz = GC_size(base) - sizeof(oh);
# else
clobbered = GC_check_annotated_obj((oh *)base);
if (clobbered != 0) {
GC_err_printf("GC_debug_realloc: found smashed location at ");
GC_print_smashed_obj(p, clobbered);
}
old_sz = ((oh *)base) -> oh_sz;
# endif
if (old_sz < copy_sz) copy_sz = old_sz;
if (result == 0) return(0);
BCOPY(p, result, copy_sz);
GC_debug_free(p);
return(result);
}
GC_API void * GC_CALL GC_debug_realloc(void * p, size_t lb, GC_EXTRA_PARAMS)
{
void * base;
void * result;
hdr * hhdr;
if (p == 0)
return(GC_debug_malloc(lb, OPT_RA s, i));
base = GC_base(p);
if (base == 0) {
GC_err_printf("Attempt to reallocate invalid pointer %p\n", p);
ABORT("Invalid pointer passed to realloc()");
}
if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
GC_err_printf(
"GC_debug_realloc called on pointer %p w/o debugging info\n", p);
return(GC_realloc(p, lb));
}
hhdr = HDR(base);
switch (hhdr -> hb_obj_kind) {
# ifdef STUBBORN_ALLOC
case STUBBORN:
result = GC_debug_malloc_stubborn(lb, OPT_RA s, i);
break;
# endif
case NORMAL:
result = GC_debug_malloc(lb, OPT_RA s, i);
break;
case PTRFREE:
result = GC_debug_malloc_atomic(lb, OPT_RA s, i);
break;
case UNCOLLECTABLE:
result = GC_debug_malloc_uncollectable(lb, OPT_RA s, i);
break;
# ifdef ATOMIC_UNCOLLECTABLE
case AUNCOLLECTABLE:
result = GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i);
break;
# endif
default:
result = NULL; /* initialized to prevent warning. */
GC_err_printf("GC_debug_realloc: encountered bad kind\n");
ABORT("Bad kind");
}
if (result != NULL) {
size_t old_sz;
# ifdef SHORT_DBG_HDRS
old_sz = GC_size(base) - sizeof(oh);
# else
old_sz = ((oh *)base) -> oh_sz;
# endif
BCOPY(p, result, old_sz < lb ? old_sz : lb);
GC_debug_free(p);
}
return(result);
}