[Issue 22448] New: OpenBSD: Add OpenBSD-specific alloc and free function prototypes from stdlib.h

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22448

          Issue ID: 22448
           Summary: OpenBSD: Add OpenBSD-specific alloc and free function
                    prototypes from stdlib.h
           Product: D
           Version: D2
          Hardware: All
                OS: Other
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: druntime
          Assignee: nobody at puremagic.com
          Reporter: bcallah at openbsd.org

Add freezero, calloc_conceal, malloc_conceal, reallocarray, and recallocarray.
These are OpenBSD-specific extensions to the *alloc family that provide
security and safety enhancements.

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