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In Fortran, omp_get_device_from_uid can also accept substrings, which are then not NUL terminated. Fixed by introducing a fortran.c wrapper function. Additionally, in case of a fail the plugin functions now return NULL instead of failing fatally such that a fall-back UID is generated. gcc/ChangeLog: * omp-general.cc (omp_runtime_api_procname): Strip "omp_" from string; move get_device_from_uid as now a '_' suffix exists. libgomp/ChangeLog: * fortran.c (omp_get_device_from_uid_): New function. * libgomp.map (GOMP_6.0): Add it. * oacc-host.c (host_dispatch): Init '.uid' and '.get_uid_func'. * omp_lib.f90.in: Make it used by removing bind(C). * omp_lib.h.in: Likewise. * target.c (omp_get_device_from_uid): Ensure the device is initialized. * plugin/plugin-gcn.c (GOMP_OFFLOAD_get_uid): Add function comment; return NULL in case of an error. * plugin/plugin-nvptx.c (GOMP_OFFLOAD_get_uid): Likewise. * testsuite/libgomp.fortran/device_uid.f90: Update to test substrings.
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