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Suppress false warning for freed pointer

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Nobuyoshi Nakada 2016-06-05 20:41:32 +09:00
parent 1be2875e1d
commit 8d6e9b6658
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GPG key ID: 7CD2805BFA3770C6
1 changed files with 24 additions and 13 deletions
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37
gc.c
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@ -11312,8 +11312,20 @@ objspace_malloc_gc_stress(rb_objspace_t *objspace)
}
}
static void
objspace_malloc_increase(rb_objspace_t *objspace, void *mem, size_t new_size, size_t old_size, enum memop_type type)
static inline bool
objspace_malloc_increase_report(rb_objspace_t *objspace, void *mem, size_t new_size, size_t old_size, enum memop_type type)
{
if (0) fprintf(stderr, "increase - ptr: %p, type: %s, new_size: %"PRIdSIZE", old_size: %"PRIdSIZE"\n",
mem,
type == MEMOP_TYPE_MALLOC ? "malloc" :
type == MEMOP_TYPE_FREE ? "free " :
type == MEMOP_TYPE_REALLOC ? "realloc": "error",
new_size, old_size);
return false;
}
static bool
objspace_malloc_increase_body(rb_objspace_t *objspace, void *mem, size_t new_size, size_t old_size, enum memop_type type)
{
if (new_size > old_size) {
ATOMIC_SIZE_ADD(malloc_increase, new_size - old_size);
@ -11355,13 +11367,6 @@ objspace_malloc_increase(rb_objspace_t *objspace, void *mem, size_t new_size, si
atomic_sub_nounderflow(&objspace->malloc_params.allocated_size, dec_size);
}
if (0) fprintf(stderr, "increase - ptr: %p, type: %s, new_size: %"PRIdSIZE", old_size: %"PRIdSIZE"\n",
mem,
type == MEMOP_TYPE_MALLOC ? "malloc" :
type == MEMOP_TYPE_FREE ? "free " :
type == MEMOP_TYPE_REALLOC ? "realloc": "error",
new_size, old_size);
switch (type) {
case MEMOP_TYPE_MALLOC:
ATOMIC_SIZE_INC(objspace->malloc_params.allocations);
@ -11382,8 +11387,14 @@ objspace_malloc_increase(rb_objspace_t *objspace, void *mem, size_t new_size, si
case MEMOP_TYPE_REALLOC: /* ignore */ break;
}
#endif
return true;
}
#define objspace_malloc_increase(...) \
for (bool malloc_increase_done = objspace_malloc_increase_report(__VA_ARGS__); \
!malloc_increase_done; \
malloc_increase_done = objspace_malloc_increase_body(__VA_ARGS__))
struct malloc_obj_info { /* 4 words */
size_t size;
#if USE_GC_MALLOC_OBJ_INFO_DETAILS
@ -11695,10 +11706,10 @@ objspace_xfree(rb_objspace_t *objspace, void *ptr, size_t old_size)
#endif
old_size = objspace_malloc_size(objspace, ptr, old_size);
free(ptr);
RB_DEBUG_COUNTER_INC(heap_xfree);
objspace_malloc_increase(objspace, ptr, 0, old_size, MEMOP_TYPE_FREE);
objspace_malloc_increase(objspace, ptr, 0, old_size, MEMOP_TYPE_FREE) {
free(ptr);
RB_DEBUG_COUNTER_INC(heap_xfree);
}
}
static void *