[gcc r12-3551] rs6000: fix symtab_node::get == NULL issue

[Martin Liska]

https://gcc.gnu.org/g:adddfc85c07143f7c8097a90a83bfb15b8bd52e8

commit r12-3551-gadddfc85c07143f7c8097a90a83bfb15b8bd52e8
Author: Martin Liska <mliska@suse.cz>
Date:   Wed Sep 15 17:19:58 2021 +0200

    rs6000: fix symtab_node::get == NULL issue
    
            PR target/102349
    
    gcc/ChangeLog:
    
            * config/rs6000/rs6000.c (rs6000_xcoff_encode_section_info):
            Check that we have a symbol summary for a symbol.

Diff:
---
 gcc/config/rs6000/rs6000.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index b0ec8108007..d0830a95027 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -21728,6 +21728,7 @@ rs6000_xcoff_encode_section_info (tree decl, rtx rtl, int first)
   if (decl
       && DECL_P (decl)
       && VAR_OR_FUNCTION_DECL_P (decl)
+      && symtab_node::get (decl) != NULL
       && symtab_node::get (decl)->alias == 0
       && symname[strlen (symname) - 1] != ']')
     {