[clang] bad error message on incorrect string literal #18079 (PR #81670)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: None (akshaykumars614)

<details>
<summary>Changes</summary>

(bad error message on incorrect string literal)

Fixed the error message for incorrect string literal

before:

test.cpp:1:19: error: invalid character '
' character in raw string delimiter; use PREFIX( )PREFIX to delimit raw string
char const* a = R"
                  ^

now:

test.cpp:1:19: error: invalid newline character in raw string delimiter; use PREFIX( )PREFIX to delimit raw string
    1 | char const* a = R"
      |                   ^


---
Full diff: https://github.com/llvm/llvm-project/pull/81670.diff


1 Files Affected:

- (modified) clang/include/clang/Basic/DiagnosticLexKinds.td (+1-1) 


``````````diff
diff --git a/clang/include/clang/Basic/DiagnosticLexKinds.td b/clang/include/clang/Basic/DiagnosticLexKinds.td
index 75ca2fa16d3485..c5a2096d02b39d 100644
--- a/clang/include/clang/Basic/DiagnosticLexKinds.td
+++ b/clang/include/clang/Basic/DiagnosticLexKinds.td
@@ -100,7 +100,7 @@ def err_raw_delim_too_long : Error<
   "raw string delimiter longer than 16 characters"
   "; use PREFIX( )PREFIX to delimit raw string">;
 def err_invalid_char_raw_delim : Error<
-  "invalid character '%0' character in raw string delimiter"
+  "invalid newline character in raw string delimiter"
   "; use PREFIX( )PREFIX to delimit raw string">;
 def err_unterminated_raw_string : Error<
   "raw string missing terminating delimiter )%0\"">;

``````````

</details>


https://github.com/llvm/llvm-project/pull/81670