[Issue 19137] New: D_BoundsChecks / D_NoBoundsChecks does not support -boundschecks=safeonly

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19137

          Issue ID: 19137
           Summary: D_BoundsChecks / D_NoBoundsChecks does not support
                    -boundschecks=safeonly
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: minor
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: pro.mathias.lang at gmail.com

When a program is compiled with `-boundschecks=safeonly`, `D_NoBoundsChecks` is
*not* defined, but bounds check is turned off in non-safe code, which might
break some assumption, e.g. in `@trusted` code.

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