Merge from trunk:

Tolerate argc being zero.

Patch from C. K. Jester-Young.


[SVN r43331]

Author: vprus

include/boost/program_options/detail/parsers.hpp

@@ -38,7 +38,7 @@ namespace boost { namespace program_options {
     : detail::cmdline(
         // Explicit template arguments are required by gcc 3.3.1 
         // (at least mingw version), and do no harm on other compilers.
-        to_internal(detail::make_vector<charT, charT**>(argv+1, argv+argc)))
+        to_internal(detail::make_vector<charT, charT**>(argv+1, argv+argc+!argc)))
     {}
 
 

src/cmdline.cpp

@@ -98,10 +98,10 @@ namespace boost { namespace program_options { namespace detail {
     {
 #if defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)
         vector<string> args;
-        copy(argv+1, argv+argc, inserter(args, args.end()));
+        copy(argv+1, argv+argc+!argc, inserter(args, args.end()));
         init(args);
 #else
-        init(vector<string>(argv+1, argv+argc));
+        init(vector<string>(argv+1, argv+argc+!argc));
 #endif
     }