[Issue 12458] New: No out of bounds assert errors in not-release mode for std.bitmanip.BitArray

d-bugmail at puremagic.com d-bugmail at puremagic.com
Mon Mar 24 15:58:31 PDT 2014


https://d.puremagic.com/issues/show_bug.cgi?id=12458

           Summary: No out of bounds assert errors in not-release mode for
                    std.bitmanip.BitArray
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Keywords: accepts-invalid
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: bearophile_hugs at eml.cc


--- Comment #0 from bearophile_hugs at eml.cc 2014-03-24 15:58:27 PDT ---
(This is tagged as error instead of enhancement request.)

This wrong code surprisingly compiles and runs with no errors:


void main() {
    import std.bitmanip: BitArray;
    BitArray ba;
    ba.length = 10;
    auto b = ba[100];
}


Built-in D arrays have bound tests, so in not-release mode I'd like BitArray to
give a run-time assert error on code like that. It helps me debug code that
uses BitArrays.

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