diff options
Diffstat (limited to 'src/H5O.c')
| -rw-r--r-- | src/H5O.c | 11 |
1 files changed, 9 insertions, 2 deletions
@@ -1587,14 +1587,18 @@ H5O_remove(H5G_entry_t *ent, const H5O_class_t *type, intn sequence) * Aug 7 1997 * * Modifications: - * + * Robb Matzke, 1999-08-26 + * If new memory is allocated as a multiple of some alignment + * then we're careful to initialize the part of the new memory + * from the end of the expected message to the end of the new + * memory. *------------------------------------------------------------------------- */ static intn H5O_alloc_extend_chunk(H5O_t *oh, intn chunkno, size_t size) { intn idx, i; - size_t delta; + size_t delta, padding; uint8_t *old_addr; FUNC_ENTER(H5O_alloc_extend_chunk, FAIL); @@ -1659,6 +1663,7 @@ H5O_alloc_extend_chunk(H5O_t *oh, intn chunkno, size_t size) oh->mesg = x; } delta = MAX(H5O_MIN_SIZE, size+H5O_SIZEOF_MSGHDR(f)); + padding = H5O_ALIGN(delta) - delta; delta = H5O_ALIGN(delta); idx = oh->nmesgs++; oh->mesg[idx].type = H5O_NULL; @@ -1678,6 +1683,8 @@ H5O_alloc_extend_chunk(H5O_t *oh, intn chunkno, size_t size) HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed"); } + HDmemset(oh->chunk[chunkno].image+oh->chunk[chunkno].size-padding, + 0, padding); /* adjust raw addresses for messages of this chunk */ if (old_addr != oh->chunk[chunkno].image) { |