From: YunQiang Su <yunqi...@isrc.iscas.ac.cn>
When use --print-multilib-os-dir, gcc outputs different value
with full -march option and the base one only.
$ ./gcc/xgcc --print-multilib-os-dir -mabi=lp64d -march=rv64gc
lib64/lp64d
$ ./gcc/xgcc --print-multilib-os-dir -mabi=lp64d -march=rv64gc_zba
.
The reason is that in multilib.h, the fallback value of multilib
is listed as the 1st one in `multilib_raw[]`.
gcc
* common/config/riscv/riscv-common.cc(riscv_select_multilib_by_abi):
look up reversely as the fallback path is listed as the 1st one.
---
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 62c6e1dab1f..2c1ce7fc7cb 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 (size_t i = 0; i < multilib_infos.size (); ++i)
+ for (ssize_t i = multilib_infos.size (); i >= 0; --i)
if (riscv_current_abi_str == multilib_infos[i].abi_str)
return xstrdup (multilib_infos[i].path.c_str ());
--
2.39.3 (Apple Git-146)
