d9ef7b9745
This patch fixes an old-standing problem with premature freezing. When a derived type declaration includes a constraint, we generate a subtype declaration of an anonymous base type, with the constraint given in the original type declaration, Conceptually, the bounds are converted to the new base type, and this conversion freezes (prematurely) that base type, when the bounds are simply literals. As a result, a representation clause for the derived type is then rejected or ignared. This procedure recognizes the simple case of literal bounds in derived enumeration type declarations, which allows us to indicate that the conversions are not freeze points, and the subsequent representation clause can be accepted. 2019-08-19 Ed Schonberg <schonberg@adacore.com> gcc/ada/ * sem_ch3.adb (Derived_Enumeration_Type): Do no freeze anonymous base type if the bounds in the derived type declaration are literals of the type. gcc/testsuite/ * gnat.dg/rep_clause9.adb: New testcase. From-SVN: r274641 |
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