[PATCH] ICF: fix memory leak

[Martin Liška]

The following fixes a memory leak.

Patch can bootstrap on x86_64-linux-gnu and survives regression tests.

Ready to be installed?
Thanks,
Martin

gcc/ChangeLog:

	PR ipa/99003
	* ipa-icf.c (sem_item::add_reference): Fix memory leak when
	a reference exists.
---
  gcc/ipa-icf.c | 7 +++++--
  1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/gcc/ipa-icf.c b/gcc/ipa-icf.c
index 435f567d72e..687ad8d45b7 100644
--- a/gcc/ipa-icf.c
+++ b/gcc/ipa-icf.c
@@ -165,8 +165,11 @@ sem_item::add_reference (ref_map *refs,
    unsigned index = reference_count++;
    bool existed;
  
-  vec<sem_item *> &v
-    = refs->get_or_insert (new sem_usage_pair (target, index), &existed);
+  sem_usage_pair *pair = new sem_usage_pair (target, index);
+  vec<sem_item *> &v = refs->get_or_insert (pair, &existed);
+  if (existed)
+    delete pair;
+
    v.safe_push (this);
    bitmap_set_bit (target->usage_index_bitmap, index);
    refs_set.add (target->node);
-- 
2.30.0