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v4.0.x: apply romio314 patch to romio321 #5493

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v4.0.x: apply romio314 patch to romio321 #5493

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7 changes: 6 additions & 1 deletion ompi/mca/io/romio321/romio/mpi-io/mpioimpl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,12 @@
#define ROMIO_THREAD_CS_ENTER()
#define ROMIO_THREAD_CS_EXIT()
#define ROMIO_THREAD_CS_YIELD()
#define MPIO_DATATYPE_ISCOMMITTED(dtype_, err_) do {} while (0)
/* The MPI_DATATYPE_ISCOMMITTED macro now always sets err_=0.
This is an optimistic approach for Open MPI, but it is likely other
upper layers already checked the datatype was committed.
Not setting err_ is incorrect since it can lead to use of
uninitialized variable.*/
#define MPIO_DATATYPE_ISCOMMITTED(dtype_, err_) do { err_ = 0; } while (0)
#ifdef HAVE_WINDOWS_H
#define MPIU_UNREFERENCED_ARG(a) a
#else
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