[Bug tree-optimization/119614] [15 regression] protobuf-29.4 fails to build with -O2 (error: cannot tail-call: call and return value are different)

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119614

--- Comment #45 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'd say certainly
--- gcc/ipa-prop.cc.jj  2025-04-16 09:30:52.762558540 +0200
+++ gcc/ipa-prop.cc     2025-04-16 11:17:43.716154125 +0200
@@ -5518,8 +5518,8 @@ ipa_prop_write_jump_functions (void)
          && ipa_node_params_sum->get (node) != NULL)
         ipa_write_node_info (ob, node);
     }
-  streamer_write_char_stream (ob->main_stream, 0);
   ipa_write_return_summaries (ob);
+  streamer_write_char_stream (ob->main_stream, 0);
   produce_asm (ob);
   destroy_output_block (ob);
 }
because without that I always saw ipa_read_return_summaries to read no
summaries at all.
But that doesn't fix the #c40 testcase.