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-rw-r--r--parse.y9
1 files changed, 8 insertions, 1 deletions
diff --git a/parse.y b/parse.y
index dd0e46b..aafc821 100644
--- a/parse.y
+++ b/parse.y
@@ -2143,12 +2143,19 @@ dsym : tSYMBEG xstring_contents tSTRING_END
yyerror("empty symbol literal");
}
else {
+ VALUE lit;
+
switch (nd_type($$)) {
case NODE_DSTR:
nd_set_type($$, NODE_DSYM);
break;
case NODE_STR:
- if (strlen(RSTRING($$->nd_lit)->ptr) == RSTRING($$->nd_lit)->len) {
+ lit = $$->nd_lit;
+ if (RSTRING(lit)->len == 0) {
+ yyerror("empty symbol literal");
+ break;
+ }
+ if (strlen(RSTRING(lit)->ptr) == RSTRING(lit)->len) {
$$->nd_lit = ID2SYM(rb_intern(RSTRING($$->nd_lit)->ptr));
nd_set_type($$, NODE_LIT);
break;