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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/27743] Internal error psymtab.c
Date: Fri, 23 Apr 2021 15:34:42 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27743

--- Comment #20 from Tom Tromey <tromey at sourceware dot org> ---
I have a fix but haven't attempted to write a test case.

diff --git a/gdb/psymtab.c b/gdb/psymtab.c
index 23eed6bc1c6..71b02caae51 100644
--- a/gdb/psymtab.c
+++ b/gdb/psymtab.c
@@ -127,9 +127,10 @@ partial_map_expand_apply (struct objfile *objfile,
 {
   struct compunit_symtab *last_made =3D objfile->compunit_symtabs;

-  /* Shared psymtabs should never be seen here.  Instead they should
-     be handled properly by the caller.  */
-  gdb_assert (pst->user =3D=3D NULL);
+  /* We may see a shared psymtab here, but we want to expand the
+     outermost symtab.  */
+  while (pst->user !=3D nullptr)
+    pst =3D pst->user;

   /* Don't visit already-expanded psymtabs.  */
   if (pst->readin_p (objfile))

--=20
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