diff options
Diffstat (limited to 'src/H5Oalloc.c')
| -rw-r--r-- | src/H5Oalloc.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/src/H5Oalloc.c b/src/H5Oalloc.c index a21c2b8..dfc844d 100644 --- a/src/H5Oalloc.c +++ b/src/H5Oalloc.c @@ -559,26 +559,27 @@ H5O_alloc_extend_chunk(H5F_t *f, hid_t dxpl_id, H5O_t *oh, unsigned chunkno, /* Check for changing the chunk #0 data size enough to need adjusting the flags */ if(oh->version > H5O_VERSION_1 && chunkno == 0) { uint64_t chunk0_size; /* Size of chunk 0's data */ + size_t orig_prfx_size = (size_t)1 << (oh->flags & H5O_HDR_CHUNK0_SIZE); /* Original prefix size */ HDassert(oh->chunk[0].size >= (size_t)H5O_SIZEOF_HDR(oh)); chunk0_size = oh->chunk[0].size - (size_t)H5O_SIZEOF_HDR(oh); - /* Check for moving from a 1-byte to a 2-byte size encoding */ - if(chunk0_size <= 255 && (chunk0_size + delta) > 255) { - extra_prfx_size = 1; - new_size_flags = H5O_HDR_CHUNK0_2; + /* Check for moving to a 8-byte size encoding */ + if(orig_prfx_size < 8 && (chunk0_size + delta) > 4294967295) { + extra_prfx_size = 8 - orig_prfx_size; + new_size_flags = H5O_HDR_CHUNK0_8; adjust_size_flags = TRUE; } /* end if */ - /* Check for moving from a 2-byte to a 4-byte size encoding */ - else if(chunk0_size <= 65535 && (chunk0_size + delta) > 65535) { - extra_prfx_size = 2; + /* Check for moving to a 4-byte size encoding */ + else if(orig_prfx_size < 4 && (chunk0_size + delta) > 65535) { + extra_prfx_size = 4 - orig_prfx_size; new_size_flags = H5O_HDR_CHUNK0_4; adjust_size_flags = TRUE; } /* end if */ - /* Check for moving from a 4-byte to a 8-byte size encoding */ - else if(chunk0_size <= 4294967295 && (chunk0_size + delta) > 4294967295) { - extra_prfx_size = 4; - new_size_flags = H5O_HDR_CHUNK0_8; + /* Check for moving to a 2-byte size encoding */ + else if(orig_prfx_size < 2 && (chunk0_size + delta) > 255) { + extra_prfx_size = 2 - orig_prfx_size; + new_size_flags = H5O_HDR_CHUNK0_2; adjust_size_flags = TRUE; } /* end if */ } /* end if */ |