[PATCH] D116603: [AIX][z/OS][Support] Provide alternate mapped_file_region::dontNeedImpl implementations

[Zibi Sarbino via Phabricator via llvm-commits]

zibi added inline comments.


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Comment at: llvm/lib/Support/Unix/Path.inc:875
   assert(Mode == mapped_file_region::readonly);
   if (Mapping)
+#if defined(__MVS__)
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aganea wrote:
> Shouldn't we protect the contents of this function with `#ifdef HAVE_SYS_MMAN_H`?
I don't think we can use HAVE_SYS_MMAN_H since this is defined on z/OS since we do have `sys/mman.h` header file. We just don't have `madvise()`.


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  https://reviews.llvm.org/D116603/new/

https://reviews.llvm.org/D116603