================
@@ -581,6 +581,18 @@ TEST_F(LexerTest, AvoidPastEndOfStringDereference03) {
EXPECT_TRUE(Lex("#include <\\\\\n").empty());
}
+// Clangd uses single-file-parse mode in preamble scan on a truncated buffer.
+// An unclosed paren after an undefined identifier must not lex past the eod.
+TEST_F(LexerTest, SingleFileUnclosedParenUndefinedId01) {
+ PPOpts.SingleFileParseMode = true;
+ EXPECT_TRUE(Lex("#if (defined(FOO)\n").empty());
+}
+
+TEST_F(LexerTest, SingleFileUnclosedParenUndefinedId02) {
+ PPOpts.SingleFileParseMode = true;
+ EXPECT_TRUE(Lex("#if (FOO\n").empty());
----------------
max-winkler wrote:
This is a great idea. I replaced one of my tests with your one, which has the
advantage that the line below the PP directive is lexed as well.
https://github.com/llvm/llvm-project/pull/234992
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