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author | Kaz Kylheku <kaz@kylheku.com> | 2017-06-13 19:08:22 -0700 |
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committer | Kaz Kylheku <kaz@kylheku.com> | 2017-06-13 19:08:22 -0700 |
commit | 53a2e32d75890f33bd25a5e376672dd787d242e1 (patch) | |
tree | db1c37636d8341d68c455f73e5a64b5edf58a98b /mpi/mpi-types.h | |
parent | 9f441fab52d7cd135d444ecc93beab8c1ee67f31 (diff) | |
download | txr-53a2e32d75890f33bd25a5e376672dd787d242e1.tar.gz txr-53a2e32d75890f33bd25a5e376672dd787d242e1.tar.bz2 txr-53a2e32d75890f33bd25a5e376672dd787d242e1.zip |
ffi: fix buggy bitfield allocation.
* ffi.c (make_ffi_type_struct): When there is no room in the
current bitfield, two mistakes are made. When bit_offs is
reset to zero in this case, the dependent variable bits_alloc
that was calculated from it (bits allocated to current unit)
must also be reset. The subsequent shift depends on it.
Secondly, when we establish the memb[i].offs field, that
must come from offs, not from unit_offs, because unit_offs
is always the base offset of the existing cell (which doesn't
have room for the new bitfield in this case); the main offset
variable offs is what gets gets adjusted to the cell which has
room for the new bitfield.
Diffstat (limited to 'mpi/mpi-types.h')
0 files changed, 0 insertions, 0 deletions