corr, proper C++ ifstream usage

pub/src/Makefile.am

@@ -14,8 +14,8 @@ AM_CXXFLAGS = -g \
 	-Wsequence-point \
 	-Wstrict-aliasing -Wswitch \
         -Wunknown-pragmas \
-        -Wmissing-field-initializers \
-        -Wuninitialized
+        -Wmissing-field-initializers
+           # -Wuninitialized
            # -Wsign-compare -Wconversion
 
 # the following do not work on u1.spheres.frm2:

pub/src/file_in.cpp

@@ -45,9 +45,11 @@ void NFileIn::Load(void)
             mystd::fname_divide( vflong[i], &fdir, &fshort, &fext);
             
             if        ( fext=="y08" ) {
-                ifstream F_inpp (vflong[i].c_str(), ios_base::in);
-                Load_08( F_inpp, vflong[i] );
-            	F_inpp.close();
+                ifstream f (vflong[i].c_str(), ios_base::in);
+                if( f.fail() )
+                    throw "cannot open file " + vflong[i];
+                Load_08( f, vflong[i] );
+            	f.close();
             } else if ( fext=="a01" ) {
                 Load_01( F_in, vflong[i] );
             } else if ( fext=="i96" ) {

pub/src/frida2.cpp

@@ -107,7 +107,7 @@ int main()
                     "  x    execute shell command\n"
                     "  .    evaluate expression(s)\n"
                     "  _    special / temporary commands\n"
-                    "  /    meta commands and macros\n"
+                    "  \\?   help on meta commands and macros\n"
                     ;
 
             } else if (cmd == "c") {