[Bug fortran/95828] ICE in resolve_select_rank, at fortran/resolve.c:9774

[anlauf at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95828

anlauf at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2020-06-23
                 CC|                            |anlauf at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW
           Priority|P3                          |P4

--- Comment #1 from anlauf at gcc dot gnu.org ---
There's a first buffer overflow, fixed by:

diff --git a/gcc/fortran/resolve.c b/gcc/fortran/resolve.c
index c53b312f7ed..cc8676b3e03 100644
--- a/gcc/fortran/resolve.c
+++ b/gcc/fortran/resolve.c
@@ -9638,7 +9638,7 @@ resolve_select_rank (gfc_code *code, gfc_namespace
*old_ns)
   gfc_namespace *ns;
   gfc_code *body, *new_st, *tail;
   gfc_case *c;
-  char tname[GFC_MAX_SYMBOL_LEN];
+  char tname[GFC_MAX_SYMBOL_LEN + 7];
   char name[2 * GFC_MAX_SYMBOL_LEN];
   gfc_symtree *st;
   gfc_expr *selector_expr = NULL;

However, there's another one elsewhere that probably needs an instrumented
f951.