[gcc r12-6432] State --sysroot option as validated once processed

[Olivier Hainque]

https://gcc.gnu.org/g:8e86086bd33134467cc9c2a75327d1238dc71df9

commit r12-6432-g8e86086bd33134467cc9c2a75327d1238dc71df9
Author: Olivier Hainque <hainque@adacore.com>
Date:   Wed Jan 5 09:07:33 2022 +0000

    State --sysroot option as validated once processed
    
    Since we now save the option in the "switches" table
    to let specs use it more generally, we need to explicitly
    state that the option was validated else the driver
    will consider it "unrecognized".
    
    2022-01-05  Olivier Hainque  <hainque@adacore.com>
    
            * gcc.c (driver_handle_option): State --sysroot as
            validated.

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

diff --git a/gcc/gcc.c b/gcc/gcc.c
index d4c8746b0aa..29fa0f7ddce 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -4495,6 +4495,7 @@ driver_handle_option (struct gcc_options *opts,
       /* Saving this option is useful to let self-specs decide to
 	 provide a default one.  */
       do_save = true;
+      validated = true;
       break;
 
     case OPT_time_: