[clang] [clang] Implement address sanitizer on AIX (PR #129925)

[Fangrui Song via cfe-commits]

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@@ -1635,8 +1656,13 @@ bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
   }
   // If there is a static runtime with no dynamic list, force all the symbols
   // to be dynamic to be sure we export sanitizer interface functions.
-  if (AddExportDynamic)
-    CmdArgs.push_back("--export-dynamic");
+  if (AddExportDynamic) {
+    if (!TC.getTriple().isOSAIX())
+      CmdArgs.push_back("--export-dynamic");
+    else
+      llvm::report_fatal_error("Sanitizer interface functions must be exported "
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MaskRay wrote:

clang/lib/Driver has proper error reporting mechanism (D.Diag). Should not use `llvm::report_fatal_error`. I have noticed that only IBM OS code (z/OS, AIX)  uses `llvm::report_fatal_error`, which should hopefully be fixed.

https://github.com/llvm/llvm-project/pull/129925