[gcc(refs/vendors/riscv/heads/gcc-14-with-riscv-opts)] RISC-V: Fix out of index in riscv_select_multilib_by_abi

[Jeff Law via Gcc-cvs]

https://gcc.gnu.org/g:36acd0cc9bbbab875238a7d186577f19964d471f

commit 36acd0cc9bbbab875238a7d186577f19964d471f
Author: YunQiang Su <s...@gcc.gnu.org>
Date:   Thu Sep 5 19:55:20 2024 +0800

    RISC-V: Fix out of index in riscv_select_multilib_by_abi
    
    commit b5c2aae48723c9098a8a3dab1409b30fd87bbf56
    Author: YunQiang Su <yunqi...@isrc.iscas.ac.cn>
    Date:   Thu Sep 5 15:14:43 2024 +0800
    
        RISC-V: Lookup reversely in riscv_select_multilib_by_abi
    
    The last element should use index
       multilib_infos.size () - 1
    
    gcc
            * common/config/riscv/riscv-common.cc(riscv_select_multilib_by_abi):
            Fix out of index problem.
    
    (cherry picked from commit ead5f587dad3206e45db7ac31f5c34c1530ae529)

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

diff --git a/gcc/common/config/riscv/riscv-common.cc 
b/gcc/common/config/riscv/riscv-common.cc
index 2c1ce7fc7cb..bd42fd01532 100644
--- a/gcc/common/config/riscv/riscv-common.cc
+++ b/gcc/common/config/riscv/riscv-common.cc
@@ -2079,7 +2079,7 @@ riscv_select_multilib_by_abi (
   const std::string &riscv_current_abi_str,
   const std::vector<riscv_multi_lib_info_t> &multilib_infos)
 {
-  for (ssize_t i = multilib_infos.size (); i >= 0; --i)
+  for (ssize_t i = multilib_infos.size () - 1; i >= 0; --i)
     if (riscv_current_abi_str == multilib_infos[i].abi_str)
       return xstrdup (multilib_infos[i].path.c_str ());