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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: dwz@sourceware.org
Subject: [Bug default/27643] [dwz] build_abbrevs memory leak
Date: Wed, 24 Mar 2021 10:52:15 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27643

--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
Tentative patch:
...
diff --git a/dwz.c b/dwz.c
index c115b54..b212d6d 100644
--- a/dwz.c
+++ b/dwz.c
@@ -15092,10 +15092,15 @@ write_multifile (DSO *dso)
       dw_cu_ref *cup;

       for (cup =3D &first_cu; *cup && (*cup)->cu_kind !=3D CU_TYPES; )
-       if ((*cup)->cu_die->die_no_multifile =3D=3D 0)
-         cup =3D &(*cup)->cu_next;
-       else
-         *cup =3D (*cup)->cu_next;
+       {
+         if ((*cup)->cu_new_abbrev)
+           htab_delete ((*cup)->cu_new_abbrev);
+
+         if ((*cup)->cu_die->die_no_multifile =3D=3D 0)
+           cup =3D &(*cup)->cu_next;
+         else
+           *cup =3D (*cup)->cu_next;
+       }
       *cup =3D NULL;
       multifile_mode =3D MULTIFILE_MODE_WR;
       if (tracing)
...

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