[clang] [clang] Correct FixIt ranges for unused capture warnings (PR #141148)

[Oliver Hunt via cfe-commits]

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@@ -84,6 +84,21 @@ SourceLocation Sema::getLocForEndOfToken(SourceLocation Loc, unsigned Offset) {
   return Lexer::getLocForEndOfToken(Loc, Offset, SourceMgr, LangOpts);
 }
 
+SourceRange Sema::getRangeForNextToken(SourceLocation Loc,
+                                       bool IncludeComments) {
+  if (!Loc.isValid())
+    return SourceRange();
+  std::optional<Token> NextToken =
+      Lexer::findNextToken(Loc, SourceMgr, LangOpts, IncludeComments);
+  if (!NextToken)
+    return SourceRange();
+  SourceLocation TokenStart = NextToken->getLocation();
+  SourceLocation TokenEnd = NextToken->getLastLoc();
+  if (!TokenStart.isValid() || !TokenEnd.isValid())
+    return SourceRange();
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ojhunt wrote:

@cor3ntin thoughts? basically should the Lexer function take a "allow tokens that intersect macros", should the Sema wrapper, or should - because of use case - the Sema wrapper always exclude macros? I don't particularly like the last option as it means the Sema and Lexer versions of the same function name behave differently

https://github.com/llvm/llvm-project/pull/141148