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The compiler blows up generating code associated with occurrences of attribute Valid_Scalars whose evaluation is always true. After this patch the following test compiles fine. 2018-05-23 Javier Miranda <miranda@adacore.com> gcc/ada/ * sem_attr.adb (Valid_Scalars): Do not invoke Error_Attr_P to report the warning on occurrences of this attribute whose evaluation is always true (since that subprogram aborts processing the attribute). In addition, replace the node by its boolean result 'True' (required because the backend has no knowledge of this attribute). gcc/testsuite/ * gnat.dg/valid_scalars1.adb: New testcase. From-SVN: r260591
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