Correcting for char PathSeparator

source/adios2/toolkit/format/bp3/BP3Base.cpp

@@ -601,8 +601,8 @@ std::string BP3Base::GetBPRankName(const std::string &name,
     {
         bpRoot = bpName.substr(lastPathSeparator);
     }
-    const std::string bpRankName(bpName + ".dir" + std::string(PathSeparator) +
-                                 bpRoot + "." + std::to_string(rank));
+    const std::string bpRankName(bpName + ".dir" + PathSeparator + bpRoot +
+                                 "." + std::to_string(rank));
     return bpRankName;
 }
 

testing/adios2/xml/TestXMLConfig.cpp

@@ -24,8 +24,8 @@ protected:
 
 TEST_F(XMLConfigTest, TwoIOs)
 {
-    const std::string configFile(
-        configDir + std::string(adios2::PathSeparator) + "config1.xml");
+    const std::string configFile(configDir + adios2::PathSeparator +
+                                 "config1.xml");
 
 #ifdef ADIOS2_HAVE_MPI
     adios2::ADIOS adios(configFile, MPI_COMM_WORLD, adios2::DebugON);
@@ -57,8 +57,8 @@ TEST_F(XMLConfigTest, TwoIOs)
 
 TEST_F(XMLConfigTest, TwoEnginesException)
 {
-    const std::string configFile(
-        configDir + std::string(adios2::PathSeparator) + "config2.xml");
+    const std::string configFile(configDir + adios2::PathSeparator +
+                                 "config2.xml");
 
 #ifdef ADIOS2_HAVE_MPI
     EXPECT_THROW(