[clang] [llvm] [SystemZ][z/OS] __ptr32 support for z/OS in Clang (PR #96063)

[Zibi Sarbinowski via cfe-commits]

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@@ -3567,6 +3567,14 @@ void CompilerInvocationBase::GenerateLangArgs(const LangOptions &Opts,
       GenerateArg(Consumer, OPT_ftrigraphs);
   }
 
+  if (T.isOSzOS()) {
+    if (!Opts.ZOSExt)
+      GenerateArg(Consumer, OPT_fno_zos_extensions);
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zibi2 wrote:

I assume the default is -fno-zos-extensions, can you check why we need to explicitly pass this option?

https://github.com/llvm/llvm-project/pull/96063