[llvm] [z/OS] Add z/OS archive reading support (PR #187110)

[James Henderson via llvm-commits]

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@@ -104,7 +105,11 @@ ArchiveMemberHeader::ArchiveMemberHeader(const Archive *Parent,
     *Err = createMemberHeaderParseError(this, RawHeaderPtr, Size);
     return;
   }
-  if (ArMemHdr->Terminator[0] != '`' || ArMemHdr->Terminator[1] != '\n') {
+  if ((ArMemHdr->Terminator[0] != '`' || ArMemHdr->Terminator[1] != '\n') &&
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jh7370 wrote:

Correct me if I'm wrong, but won't this code mean that non-z/OS archives will accept the z/OS terminator and vice versa? That doesn't seem correct to me.

https://github.com/llvm/llvm-project/pull/187110