parse.y: symbol names must be ascii-compatible

* parse.y (rb_enc_symname_type): encoding of symbol names must be
  ascii-compatible, reject ascii-incompatible encodings.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44836 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index 25946dccda..54b4c07da2 100644
--- a/parse.y
+++ b/parse.y
@@ -10231,6 +10231,7 @@ rb_enc_symname_type(const char *name, long len, rb_encoding *enc, unsigned int a
     const char *e = m + len;
     int type = ID_JUNK;
 
+    if (!rb_enc_asciicompat(enc)) return -1;
     if (!m || len <= 0) return -1;
     switch (*m) {
       case '\0':