[PATCH 1/2] MIPS: host_detect_local_cpu, init ret with concat [PR112759]

[YunQiang Su <syq@gcc.gnu.org>]

The function `reconcat` cannot append string(s) to NULL,
as the concat process will stop at the first NULL.

Let's initialize `ret` with `concat (" ", NULL)`, then
it can be used by reconcat.

gcc/

	PR target/112759
	* config/mips/driver-native.cc (host_detect_local_cpu):
	initialize ret with concat, so that it can be used by
	reconcat later.
---
 gcc/config/mips/driver-native.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/config/mips/driver-native.cc b/gcc/config/mips/driver-native.cc
index afc276f5278..471d1925eff 100644
--- a/gcc/config/mips/driver-native.cc
+++ b/gcc/config/mips/driver-native.cc
@@ -44,7 +44,7 @@ const char *
 host_detect_local_cpu (int argc, const char **argv)
 {
   const char *cpu = NULL;
-  char *ret = NULL;
+  char *ret = concat(" ", NULL);
   char buf[128];
   FILE *f;
   bool arch;
-- 
2.39.2