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This patch updates validity checks to prevent the validation of an by-reference formal parameter because the parameter is not being read in the process. 2018-12-11 Hristian Kirtchev <kirtchev@adacore.com> gcc/ada/ * checks.adb: Add with and use clauses for Sem_Mech. (Ensure_Valid): Update the "annoying special case" to include entry and function calls. Use Get_Called_Entity to obtain the entry or subprogram being invoked, rather than retrieving it manually. Parameters passed by reference do not need a validity check. gcc/testsuite/ * gnat.dg/valid4.adb, gnat.dg/valid4_pkg.adb, gnat.dg/valid4_pkg.ads: New testcase. From-SVN: r267012
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