[gcc r13-8419] Reject -fno-multiflags [PR114314]

[Andrew Pinski]

https://gcc.gnu.org/g:4bd9d097197334e786690ba1566ccf79396da730

commit r13-8419-g4bd9d097197334e786690ba1566ccf79396da730
Author: Andrew Pinski <quic_apinski@quicinc.com>
Date:   Mon Mar 11 17:40:08 2024 -0700

    Reject -fno-multiflags [PR114314]
    
    When -fmultiflags option support was added in r13-3693-g6b1a2474f9e422,
    it accidently allowed -fno-multiflags which then would pass on to cc1.
    This fixes that oversight.
    
    Committed as obvious after bootstrap/test on x86_64-linux-gnu.
    
    gcc/ChangeLog:
    
            PR driver/114314
            * common.opt (fmultiflags): Add RejectNegative.
    
    Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
    (cherry picked from commit c4e5789cede6974b6483c0f82069ff80b5a547e4)

Diff:
---
 gcc/common.opt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/common.opt b/gcc/common.opt
index 862c474d3c8..b055c7bd9ac 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -2182,7 +2182,7 @@ Common Var(flag_move_loop_stores) Optimization
 Move stores out of loops.
 
 fmultiflags
-Common Driver
+Common Driver RejectNegative
 Building block for specs-based multilib-aware TFLAGS.
 
 fdce