Clean C++ exception code to only throw exception types

 - Update C++ code to only throw types derived from
   C++ exception

 - Update C++ code to use one-shot constructors to
   create the exceptions

Fix bug ICE-7892

1 files changed, 1 insertions, 1 deletions

diff --git a/cpp/src/IceGrid/FileUserAccountMapperI.cpp b/cpp/src/IceGrid/FileUserAccountMapperI.cpp
index bc27c667fda..ef485fdf3e6 100644
--- a/cpp/src/IceGrid/FileUserAccountMapperI.cpp
+++ b/cpp/src/IceGrid/FileUserAccountMapperI.cpp
@@ -20,7 +20,7 @@ FileUserAccountMapperI::FileUserAccountMapperI(const string& filename)
     ifstream file(IceUtilInternal::streamFilename(filename).c_str()); // filename is a UTF-8 string
     if(!file)
     {
-        throw "cannot open `" + filename + "' for reading: " + strerror(errno);
+        throw runtime_error("cannot open `" + filename + "' for reading: " + strerror(errno));
     }
 
     const string delim = " \t\r\n";