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This patch fixes a compiler abort on a precondition whose condition includes a quantified expression. 2019-08-14 Ed Schonberg <schonberg@adacore.com> gcc/ada/ * sem_util.adb (New_Copy_Tree, Visit_Entity): A quantified expression includes the implicit declaration of the loop parameter. When a quantified expression is copied during expansion, for example when building the precondition code from the generated pragma, a new loop parameter must be created for the new tree, to prevent duplicate declarations for the same symbol. gcc/testsuite/ * gnat.dg/predicate12.adb, gnat.dg/predicate12.ads: New testcase. From-SVN: r274449
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