Compiler fails with diagnostic >>>> Optimizer terminated abnormally

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    • Type: Bug
    • Resolution: Fixed
    • Priority: Medium
    • Code Generation Tools
    • CODEGEN-6474
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      ARM_18.12.0.LTS
      ARM_20.2.0.beta
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      ARM_18.12.0.LTS ARM_20.2.0.beta
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      ARM_18.12.4.LTS
      ARM_20.2.0.beta
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      ARM_18.12.4.LTS ARM_20.2.0.beta
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      The problem involves an unsigned expression in an array subscript. In this test case, the subscript is n-1, where n is of type size_t, which is unsigned. If n is of type int instead, the compiler does not abort; there is a slight difference in the loop-control instructions, but the loop body is equivalent.
      Show
      The problem involves an unsigned expression in an array subscript. In this test case, the subscript is n-1, where n is of type size_t, which is unsigned. If n is of type int instead, the compiler does not abort; there is a slight difference in the loop-control instructions, but the loop body is equivalent.
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      In some cases of loops which traverse arrays with a down-counting, unsigned index -- ie, the loop contains x[i], i is unsigned, and the loop does --i -- the compiler may abort. It won't produce incorrect code, it'll either abort or operate correctly.
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      In some cases of loops which traverse arrays with a down-counting, unsigned index -- ie, the loop contains x[i], i is unsigned, and the loop does --i -- the compiler may abort. It won't produce incorrect code, it'll either abort or operate correctly.

      Compiler fails with diagnostic >>>> Optimizer terminated abnormally

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            TI User
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                Connection: Intermediate to External PROD System
                EXTSYNC-1919 - Compiler fails with diagnostic >>>>...
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