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-rw-r--r--src/H5FDspace.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/H5FDspace.c b/src/H5FDspace.c
index 19f9281..9895938 100644
--- a/src/H5FDspace.c
+++ b/src/H5FDspace.c
@@ -126,6 +126,7 @@ H5FD_space_init_interface(void)
static haddr_t
H5FD_extend(H5FD_t *file, H5FD_mem_t type, hbool_t new_block, hsize_t size, haddr_t *frag_addr, hsize_t *frag_size)
{
+ hsize_t orig_size = size; /* Original allocation size */
haddr_t eoa; /* Address of end-of-allocated space */
hsize_t extra; /* Extra space to allocate, to align request */
haddr_t ret_value; /* Return value */
@@ -143,7 +144,7 @@ H5FD_extend(H5FD_t *file, H5FD_mem_t type, hbool_t new_block, hsize_t size, hadd
/* Compute extra space to allocate, if this is a new block and should be aligned */
extra = 0;
- if(new_block && file->alignment > 1 && size >= file->threshold) {
+ if(new_block && file->alignment > 1 && orig_size >= file->threshold) {
hsize_t mis_align; /* Amount EOA is misaligned */
/* Check for EOA already aligned */
@@ -171,6 +172,10 @@ H5FD_extend(H5FD_t *file, H5FD_mem_t type, hbool_t new_block, hsize_t size, hadd
if(file->cls->set_eoa(file, type, eoa) < 0)
HGOTO_ERROR(H5E_VFL, H5E_NOSPACE, HADDR_UNDEF, "file allocation request failed")
+ /* Post-condition sanity check */
+ if(new_block && file->alignment && orig_size >= file->threshold)
+ HDassert(!(ret_value % file->alignment));
+
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_extend() */