[gcc r14-6208] driver: Fix bootstrap with --enable-default-pie

[Jakub Jelinek <jakub@gcc.gnu.org>]

https://gcc.gnu.org/g:895a70f012b8c1b8e80ecc584c1d7ded014bc2bc

commit r14-6208-g895a70f012b8c1b8e80ecc584c1d7ded014bc2bc
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Dec 6 09:54:03 2023 +0100

    driver: Fix bootstrap with --enable-default-pie
    
    On IRC Iain mentioned bootstrap is broken for him presumably since
    r14-5791 -fhardened addition.  I think it is only a problem with
    --enable-default-pie when the case OPT_pie: wants to fall through
    into case OPT_r: and warns.
    Before the patch validated = true; was set up if ENABLE_DEFAULT_PIE
    for OPT_pie, and for -fhardened as documented I think we want to
    set any_link_options_p = true; for it too:
    /* True if -r, -shared, -pie, or -no-pie were specified on the command
       line.  */
    static bool any_link_options_p;
    
    2023-12-06  Jakub Jelinek  <jakub@redhat.com>
    
            * gcc.cc (driver_handle_option): Add /* FALLTHROUGH */ comment
            between OPT_pie and OPT_r cases.

Diff:
---
 gcc/gcc.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/gcc.cc b/gcc/gcc.cc
index 9f21ad9453e..03ec6e1cb2f 100644
--- a/gcc/gcc.cc
+++ b/gcc/gcc.cc
@@ -4617,6 +4617,7 @@ driver_handle_option (struct gcc_options *opts,
       /* -pie is turned on by default.  */
       validated = true;
 #endif
+      /* FALLTHROUGH */
     case OPT_r:
     case OPT_shared:
     case OPT_no_pie: