https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97125
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think we just want to call do_warn_duplicated_branches_r after we've lowered
control statements:
--- a/gcc/c-family/c-gimplify.c
+++ b/gcc/c-family/c-gimplify.c
@@ -533,10 +533,6 @@ c_genericize (tree fndecl)
&pset);
}
- if (warn_duplicated_branches)
- walk_tree_without_duplicates (&DECL_SAVED_TREE (fndecl),
- do_warn_duplicated_branches_r, NULL);
-
/* Genericize loops and other structured control constructs. The C++
front end has already done this in lang-specific code. */
if (!c_dialect_cxx ())
@@ -550,6 +546,10 @@ c_genericize (tree fndecl)
pop_cfun ();
}
+ if (warn_duplicated_branches)
+ walk_tree_without_duplicates (&DECL_SAVED_TREE (fndecl),
+ do_warn_duplicated_branches_r, NULL);
+
/* Dump the C-specific tree IR. */
dump_orig = get_dump_info (TDI_original, &local_dump_flags);
if (dump_orig)
