diff options
Diffstat (limited to 'src/H5HLcache.c')
| -rw-r--r-- | src/H5HLcache.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/H5HLcache.c b/src/H5HLcache.c index 51d60f9..56d9919 100644 --- a/src/H5HLcache.c +++ b/src/H5HLcache.c @@ -440,10 +440,16 @@ H5HL_prefix_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, /* Check if the local heap is a single object in cache */ if(heap->single_cache_obj) { - /* Set p to the start of the data block. This is necessary because - * there may be a gap between the used portion of the prefix and the - * data block due to alignment constraints. */ - p = buf + heap->prfx_size; + if((p - buf) < heap->prfx_size) { + size_t gap; /* Size of gap between prefix and data block */ + + /* Set p to the start of the data block. This is necessary because + * there may be a gap between the used portion of the prefix and the + * data block due to alignment constraints. */ + gap = heap->prfx_size - (p - buf); + HDmemset(p, 0, gap); + p += gap; + } /* end if */ /* Serialize the free list into the heap data's image */ H5HL_fl_serialize(heap); |