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This was reported a long time ago and is a fairly pathological case, so the fix is purposely ad hoc: when the attribute name of a pragma Machine_Attribute is not a string literal, its processing needs to be delayed for the back-end. gcc/ada/ PR ada/13370 * sem_prag.adb (Analyze_Pragma) <Pragma_Machine_Attribute>: Set the Has_Delayed_Freeze flag if the argument is not a literal. gcc/testsuite/ * gnat.dg/machine_attr3.ads, gnat.dg/machine_attr3.adb: New test.
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