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The compiler may crash when compiling array aggregates where the computation of the size produces a very large number that overflows (possibly producing a small result), such as with an aggregate of a type that is an array of arrays, where each array range has close to Integer'Last elements. That can lead to Aggr_Size_OK returning incorrectly returning True, following on to allocating a very large array in function Flatten that blows the stack. The size computation was being performed using type Int, so this was changed to use universal arithmetic. 2019-08-13 Gary Dismukes <dismukes@adacore.com> gcc/ada/ * exp_aggr.adb (Aggr_Size_OK): Compute the aggregate size using universal arithmetic, to avoid situations where the size computation overflows. gcc/testsuite/ * gnat.dg/aggr26.adb: New testcase. From-SVN: r274348
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