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This patch adds duplicate checking for OpenMP "map" clauses, taking some cues from the implementation for C in c-typeck.cc:c_finish_omp_clauses (and similar for C++). In addition to the existing use of the "mark" and "comp_mark" bitfields in the gfc_symbol structure, the patch adds several new bits handling duplicate checking within various categories of clause types. If "mark" is being used for map clauses, we need to use different bits for other clauses for cases where "map" and some other clause can refer to the same symbol (e.g. "map(n) shared(n)"). 2022-12-06 Julian Brown <julian@codesourcery.com> gcc/fortran/ PR fortran/107214 * gfortran.h (gfc_symbol): Add data_mark, dev_mark, gen_mark and reduc_mark bitfields. * openmp.cc (resolve_omp_clauses): Use above bitfields to improve duplicate clause detection. gcc/testsuite/ PR fortran/107214 * gfortran.dg/gomp/pr107214.f90: New test. * gfortran.dg/gomp/pr107214-2.f90: New test. * gfortran.dg/gomp/pr107214-3.f90: New test. * gfortran.dg/gomp/pr107214-4.f90: New test. * gfortran.dg/gomp/pr107214-5.f90: New test. * gfortran.dg/gomp/pr107214-6.f90: New test. * gfortran.dg/gomp/pr107214-7.f90: New test. * gfortran.dg/gomp/pr107214-8.f90: New test.
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