[Bug #18962] Do not read again once reached EOF

`Ripper::Lexer#parse` re-parses the source code with syntax errors
when `raise_errors: false`.

Co-Authored-By: tompng <tomoyapenguin@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index b4c3106b8c..d0f37a18cc 100644
--- a/parse.y
+++ b/parse.y
@@ -9299,6 +9299,7 @@ parser_yylex(struct parser_params *p)
       case '\004':		/* ^D */
       case '\032':		/* ^Z */
       case -1:			/* end of script. */
+	p->eofp  = 1;
 	return 0;
 
 	/* white spaces */