5046228671
When the type range [Lo, Hi] and the computed expression range [Lor, Hir] are disjoint, the range-constraining logic breaks and returns an incorrect range. For example, when Lo<Hi<Lor<Hir, it currently returns [Lor, Hi]. Instead, return the computed range. The current constraining logic would require returning the base type's bounds. However, this would miss an opportunity to warn about out of range values for some cases (e.g. when type's upper bound is equal to base type upper bound). The alternative of always returning the computed values, even when ranges are intersecting, has unwanted effects (mainly useless constraint checks are inserted) in the Enable_Overflow_Check and Apply_Scalar_Range_Check as these bounds have a special interpretation. gcc/ada/ * checks.adb (Determine_Range): Fix range refining. |
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| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
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