[clang] [llvm] Make sanitizer special case list slash-agnostic (PR #149886)

[James Y Knight via cfe-commits]

================
@@ -57,9 +59,12 @@ Error SpecialCaseList::Matcher::insert(StringRef Pattern, unsigned LineNumber,
   auto Glob = std::make_unique<Matcher::Glob>();
   Glob->Name = Pattern.str();
   Glob->LineNo = LineNumber;
+  // Backslashes are valid in posix-style filenames.
+  bool IsSlashAgnostic = Triple(sys::getDefaultTargetTriple()).isOSWindows();
   // We must be sure to use the string in `Glob` rather than the provided
   // reference which could be destroyed before match() is called
-  if (auto Err = GlobPattern::create(Glob->Name, /*MaxSubPatterns=*/1024)
+  if (auto Err = GlobPattern::create(Glob->Name, /*MaxSubPatterns=*/1024,
+                                     /*IsSlashAgnostic=*/IsSlashAgnostic)
----------------
jyknight wrote:

Oh...also, we should really only apply special handling to filenames, not other kinds of strings. Perhaps "SpecialCaseList::inSection" needs a bool for whether to use filename matching semantics?

https://github.com/llvm/llvm-project/pull/149886