mpi_t: Remove invalid error check #7565
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test:mpich/ch4/most |
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test:mpich/ch4/ucx |
MPL_env2str is used to check for CVARs with string or enum type. It returns only 0 or 1 based on whether the environment variable is found. It never returns -1, so we can safely remove the error check.
Whether or not the user has set an environment variable is tracked by the return codes of various MPL_env2* functions. If a variable is set and debugging is enabled, the setting gets printed out for the user. Rename got_rc->is_set to better indicate what the value represents.
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Updated variable name based on today's dev call discussion. |
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test:mpich/ch4/most |
hzhou
reviewed
Sep 18, 2025
| elsif ($p->{type} eq 'string' or $p->{type} eq 'enum') { | ||
| print OUTPUT_C <<EOT; | ||
| rc = MPL_env2${env_fn}("$env_name", &tmp_str); | ||
| MPIR_ERR_CHKANDJUMP1((-1 == rc),mpi_errno,MPI_ERR_OTHER,"**envvarparse","**envvarparse %s","$env_name"); |
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It doesn't hurt to leave the error check in. Even though MPL_env2str never returns error, it could in design. I think leave the error check in for uniformity is easier to maintain.
| rc = MPL_env2${env_fn}("$env_name", &($var_name)); | ||
| MPIR_ERR_CHKANDJUMP1((-1 == rc),mpi_errno,MPI_ERR_OTHER,"**envvarparse","**envvarparse %s","$env_name"); | ||
| got_rc += rc; | ||
| is_set += rc; |
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Not sure the renaming is any better.
I think the pr is overall a gratuitous/unnecessary change.
yfguo
approved these changes
Sep 19, 2025
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Pull Request Description
MPL_env2str is used to check for CVARs with string or enum type. It returns only 0 or 1 based on whether the environment variable is found. It never returns -1, so we can safely remove the error check.
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Particularly focus on why, not what. Reference background, issues, test failures, xfail entries, etc.
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