File 2017-gcc-12-omnibus.patch of Package ceph-ceph-18.2.8

diff --git a/src/common/LogEntry.cc b/src/common/LogEntry.cc
index d7b44a211..de6dda1b1 100644
--- a/src/common/LogEntry.cc
+++ b/src/common/LogEntry.cc
@@ -183,7 +183,7 @@ string clog_type_to_string(clog_type t)
       return "crit";
     default:
       ceph_abort();
-      return 0;
+      return "";
   }
 }
 
diff --git a/src/s3select/include/s3select_functions.h b/src/s3select/include/s3select_functions.h
index 06f0337a5..4b29995db 100644
--- a/src/s3select/include/s3select_functions.h
+++ b/src/s3select/include/s3select_functions.h
@@ -505,7 +505,7 @@ public:
 
   std::string  print(int ident) override
   {
-    return std::string(0);
+    return std::string("");
   }
 
   void push_argument(base_statement* arg)
diff --git a/src/test/librados/tier_cxx.cc b/src/test/librados/tier_cxx.cc
index be1d411a9..820fc4704 100644
--- a/src/test/librados/tier_cxx.cc
+++ b/src/test/librados/tier_cxx.cc
@@ -120,7 +120,7 @@ static inline void buf_to_hex(const unsigned char *buf, int len, char *str)
 }
 
 void check_fp_oid_refcount(librados::IoCtx& ioctx, std::string foid, uint64_t count,
-			   std::string fp_algo = NULL)
+			   std::string fp_algo = "")
 {
   bufferlist t;
   int size = foid.length();
@@ -148,7 +148,7 @@ void check_fp_oid_refcount(librados::IoCtx& ioctx, std::string foid, uint64_t co
   ASSERT_LE(count, refs.count());
 }
 
-string get_fp_oid(string oid, std::string fp_algo = NULL)
+string get_fp_oid(string oid, std::string fp_algo = "")
 {
   if (fp_algo == "sha1") {
     unsigned char fingerprint[CEPH_CRYPTO_SHA1_DIGESTSIZE + 1];