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Diffstat (limited to 'ext/objspace/object_tracing.c')
-rw-r--r--ext/objspace/object_tracing.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/objspace/object_tracing.c b/ext/objspace/object_tracing.c
index 2475623410..ff45172af4 100644
--- a/ext/objspace/object_tracing.c
+++ b/ext/objspace/object_tracing.c
@@ -81,7 +81,7 @@ newobj_i(VALUE tpval, void *data)
VALUE klass = rb_tracearg_defined_class(tparg);
struct allocation_info *info;
const char *path_cstr = RTEST(path) ? make_unique_str(arg->str_table, RSTRING_PTR(path), RSTRING_LEN(path)) : 0;
- VALUE class_path = RTEST(klass) ? rb_class_path(klass) : Qnil;
+ VALUE class_path = (RTEST(klass) && !OBJ_FROZEN(klass)) ? rb_class_path(klass) : Qnil;
const char *class_path_cstr = RTEST(class_path) ? make_unique_str(arg->str_table, RSTRING_PTR(class_path), RSTRING_LEN(class_path)) : 0;
if (st_lookup(arg->object_table, (st_data_t)obj, (st_data_t *)&info)) {