1 files changed, 15 insertions, 0 deletions
diff --git a/sv.c b/sv.c
index 3b9dfb8c04..c9debc63cc 100644
--- a/sv.c
+++ b/sv.c
@@ -10681,6 +10681,21 @@ Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param)
 #endif
 		break;
 	    }
+	case SAVEt_COP_WARNINGS:
+	    {
+		void *optr = POPPTR(ss,ix);
+		TOPPTR(nss,ix) = ptr = any_dup(optr, proto_perl);
+		if (ptr != optr) {
+		    /* We duped something in the interpreter structure.  */
+		    ptr = POPPTR(ss,ix);
+		    TOPPTR(nss,ix) = DUP_WARNINGS((STRLEN*)ptr);
+		} else {
+		    /* I don't think that this happens, but it would mean that
+		       we (didn't) dup something shared.  */
+		    ptr = POPPTR(ss,ix);
+		    TOPPTR(nss,ix) = ptr;
+		}
+	    }
 	default:
 	    Perl_croak(aTHX_ "panic: ss_dup inconsistency (%"IVdf")", (IV) i);
 	}