[Bug lto/69133] [6 Regression] LTO segfault in lto_get_decl_name_mapping() on 483.xalancbmk with -flto-partition=none

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69133

--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
The problem seems to be that cgraph_node::get_untransformed_body checks
presence of body by DECL_RESULT which is NULL for thunks. Rest of places seems
to check for DECL_ARGUMENTS.

I am testing:
Index: cgraph.c
===================================================================
--- cgraph.c    (revision 232466)
+++ cgraph.c    (working copy)
@@ -3305,10 +3295,11 @@ cgraph_node::get_untransformed_body (voi
   size_t len;
   tree decl = this->decl;

-  if (DECL_RESULT (decl))
+  /* Check if body is already there.  */
+  if (!DECL_ARGUMENTS (decl))
     return false;

-  gcc_assert (in_lto_p);
+  gcc_assert (in_lto_p && !DECL_RESULT (decl))

   timevar_push (TV_IPA_LTO_GIMPLE_IN);