From 13e79a3ac95e8474eb349f7f05fe82a20faf78c6 Mon Sep 17 00:00:00 2001
From: Tim Holy <tim.holy@gmail.com>
Date: Wed, 6 May 2020 14:29:41 -0500
Subject: [PATCH] Also save signature triggering the invalidation

---
 src/gf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gf.c b/src/gf.c
index e7d2d133f70e7..0eeb377584430 100644
--- a/src/gf.c
+++ b/src/gf.c
@@ -1739,6 +1739,9 @@ JL_DLLEXPORT void jl_method_table_insert(jl_methtable_t *mt, jl_method_t *method
             for (i = 1; i < na; i += 2) {
                 jl_value_t *backedgetyp = backedges[i - 1];
                 if (!jl_has_empty_intersection(backedgetyp, (jl_value_t*)type)) {
+                    if (_jl_debug_method_invalidation) {
+                        jl_array_ptr_1d_push(_jl_debug_method_invalidation, (jl_value_t*)backedgetyp);
+                    }
                     jl_method_instance_t *backedge = (jl_method_instance_t*)backedges[i];
                     invalidate_method_instance(backedge, max_world, 0);
                     invalidated = 1;