v4.0.x: mpi/fortran: Fix valgrind warnings for type create #6263
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Valgrind warns that *newtype is uninitialized when calling from
Fortran as e.g.
use mpi
integer :: t, err
call MPI_Type_create_f90_integer(5, t, err)
Since newtype is intent(out), this should not happen. There is
no reason to convert the type using PMPI_Type_f2c, only to over-
write it immediately afterwards. The other type_create_* functions
did not convert newtype.
The valgrind warnings:
==28441== Conditional jump or move depends on uninitialised value(s)
==28441== at 0x581B555: PMPI_Type_f2c (in [...]/lib/libmpi.so.0.0.0)
==28441== by 0x4E87AB7: MPI_TYPE_CREATE_F90_INTEGER (in [...]/lib/libmpi_mpifh.so.0.0.0)
==28441== by 0x400BA1: MAIN__ (in [...])
==28441== by 0x400C46: main (in [...])
==28441==
==28441== Conditional jump or move depends on uninitialised value(s)
==28441== at 0x581B563: PMPI_Type_f2c (in [...]/lib/libmpi.so.0.0.0)
==28441== by 0x4E87AB7: MPI_TYPE_CREATE_F90_INTEGER (in [...]/lib/libmpi_mpifh.so.0.0.0)
==28441== by 0x400BA1: MAIN__ (in [..])
==28441== by 0x400C46: main (in [...])
==28441==
==28441== Use of uninitialised value of size 8
==28441== at 0x581B577: PMPI_Type_f2c (in [...]/lib/libmpi.so.0.0.0)
==28441== by 0x4E87AB7: MPI_TYPE_CREATE_F90_INTEGER (in [...]/lib/libmpi_mpifh.so.0.0.0)
==28441== by 0x400BA1: MAIN__ (in [...])
==28441== by 0x400C46: main (in [...])
==28441==
Signed-off-by: Risto Toijala <risto.toijala@gmail.com>
(cherry picked from commit f14a0f4)
|
@hppritcha @gpaulsen This patch was submitted by @rtoijala; I reviewed it and created the PR, so github won't let me mark it as reviewed. |
bosilca
approved these changes
Jan 9, 2019
|
The IBM CI (GNU Compiler) build failed! Please review the log, linked below. Gist: https://gist.github.com/ibm-ompi/88b480fb98dfd2bdac939f023e1f8fe6 |
|
The IBM CI (XL Compiler) build failed! Please review the log, linked below. Gist: https://gist.github.com/ibm-ompi/88b480fb98dfd2bdac939f023e1f8fe6 |
gpaulsen
approved these changes
Jan 10, 2019
hppritcha
approved these changes
Jan 12, 2019
|
bot:ibm:retest probably futile but worth a shot |
|
@jjhursey could you check what's going on with IBM CI? Thanks. |
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Valgrind warns that *newtype is uninitialized when calling from
Fortran as e.g.
use mpi integer :: t, err call MPI_Type_create_f90_integer(5, t, err)Since newtype is intent(out), this should not happen. There is
no reason to convert the type using PMPI_Type_f2c, only to over-
write it immediately afterwards. The other type_create_* functions
did not convert newtype.
The valgrind warnings:
Signed-off-by: Risto Toijala risto.toijala@gmail.com
(cherry picked from commit f14a0f4)
Refs #6254