================
@@ -3183,8 +3193,35 @@ bool Lexer::LexEndOfFile(Token &Result, const char *CurPtr) {
DiagID = diag::ext_no_newline_eof;
}
- Diag(BufferEnd, DiagID)
- << FixItHint::CreateInsertion(EndLoc, "\n");
+ if (LastNewline.empty()) {
+ Diag(BufferEnd, DiagID) << FixItHint::CreateInsertion(EndLoc, "\n");
+ } else {
+ // While the file physically ends in a newline, the previous
+ // line might have ended in a splice, so it would be deleted
+ StringRef WithoutLastNewline =
+ StringRef(BufferStart, LastNewline.data() - BufferStart);
+ while (!WithoutLastNewline.empty()) {
+ if (isHorizontalWhitespace(WithoutLastNewline.back())) {
+ WithoutLastNewline = WithoutLastNewline.drop_back();
+ } else {
+ break;
+ }
+ }
+
+ if (WithoutLastNewline.ends_with('\\') ||
+ (LangOpts.Trigraphs && WithoutLastNewline.ends_with("??"
+ "/"))) {
----------------
Sirraide wrote:
> I had no idea `\?` was a valid escape sequence
Yeah, the entire point of it is basically exactly this.
https://github.com/llvm/llvm-project/pull/97585