21717db17a
gcc/ada/ * libgnat/a-strunb.adb (Sum, Mul, Saturated_Sum, Saturated_Mul): New routines. Use them when resulting string size more that length of the strings in parameters. (Unbounded_Slice): Use "- 1" instead of "+ 1" in opposite side of condition to avoid overflow. * libgnat/a-strunb__shared.adb (Sum, Mul): New routines. (Allocate): New routine with 2 parameters. Use routine above when resulting string size more that length of the strings in parameters. (Aligned_Max_Length): Do not try to align to more than Natural'Last. (Unbounded_Slice): Use "- 1" instead of "+ 1" in opposite side of condition to avoid overflow.
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