a1c7d7973c
* gcc-interface/ada-tree.h (DECL_CAN_NEVER_BE_NULL_P): New macro. * gcc-interface/decl.c (gnat_to_gnu_entity) <object>: Set the flag. (gnat_to_gnu_param): Likewise. * gcc-interface/utils.c (convert) <UNCONSTRAINED_ARRAY_REF>: Invoke maybe_unconstrained_array instead of doing the work manually. (maybe_unconstrained_array): Propagate the TREE_THIS_NOTRAP flag. * gcc-interface/utils2.c (build_unary_op) <INDIRECT_REF>: If operand is a DECL with the flag, set TREE_THIS_NOTRAP on the reference. (gnat_stabilize_reference_1): Propagate the TREE_THIS_NOTRAP flag. (gnat_stabilize_reference): Likewise. From-SVN: r179182
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