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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2016-12-21 11:12:39 +0000
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2016-12-21 11:12:39 +0000
commit1729243bba6e3bab8001c3f96bff0aeca47ed9ae (patch)
treeb39f1d7b2287caaddff7f1c11dddd9372a38c54b /eval.c
parentde59178aaf171674a3c2c06cc6271a673a3f9035 (diff)
eval.c: fix circular cause
* eval.c (exc_setup_cause): always set cause of cause to get rid of circular references. [ruby-core:78688] [Bug #13043] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57137 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'eval.c')
-rw-r--r--eval.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/eval.c b/eval.c
index 178ff62137..4c6e8e98b4 100644
--- a/eval.c
+++ b/eval.c
@@ -457,6 +457,9 @@ exc_setup_cause(VALUE exc, VALUE cause)
#endif
if (!NIL_P(cause) && cause != exc) {
rb_ivar_set(exc, id_cause, cause);
+ if (!rb_ivar_defined(cause, id_cause)) {
+ rb_ivar_set(cause, id_cause, Qnil);
+ }
}
return exc;
}