[llvm] [clang-tools-extra] [clang] [XCOFF][obj2yaml] support parsing auxiliary symbols for XCOFF (PR #70642)

[via cfe-commits]

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@@ -282,45 +282,57 @@ static void auxSymMapping(IO &IO, XCOFFYAML::SectAuxEntForStat &AuxSym) {
 
 void MappingTraits<std::unique_ptr<XCOFFYAML::AuxSymbolEnt>>::mapping(
     IO &IO, std::unique_ptr<XCOFFYAML::AuxSymbolEnt> &AuxSym) {
-  assert(!IO.outputting() && "We don't dump aux symbols currently.");
+
+  auto ResetAuxSym = [&](auto *AuxEnt) {
+    if (!IO.outputting())
+      AuxSym.reset(AuxEnt);
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EsmeYi wrote:

Thanks, this seems cause a sanitizer error in https://lab.llvm.org/buildbot/#/builders/5/builds/39023
I gonna fix it.

https://github.com/llvm/llvm-project/pull/70642