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PR fortran/18937 fortran/ * resolve.c: Include obstack.h and bitmap.h. New variable labels_obstack. (code_stack): Add tail and reachable_labels fields. (reachable_labels): New function. (resolve_branch): Rework to use new fields in code_stack. (resolve_code): Call reachable_labels. (resolve_codes): Allocate and free labels_obstack. testsuite/ * gfortran.dg/goto_2.f90: New. * gfortran.dg/goto_3.f90: New. * gfortran.dg/pr17708.f90: Rename to ... * gfortran.dg/goto_4.f90: ... this, add comment pointing to PR. From-SVN: r123789
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