Use CreateProcessW instead of CreateProcessA

Changed libnative to use CreateProcessW instead of CreateProcessA.  In
addition, the lpEnvironment parameter now uses Unicode.

Added a helper function os::win32::as_mut_utf16_p, which does basically
the same thing as os::win32::as_utf16_p except the pointer is mutable.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/libstd/os.rs b/src/libstd/os.rs
index f7324dc08b6..44c338a3091 100644
--- a/src/libstd/os.rs
+++ b/src/libstd/os.rs
@@ -141,10 +141,14 @@ pub mod win32 {
     }
 
     pub fn as_utf16_p<T>(s: &str, f: |*u16| -> T) -> T {
+        as_mut_utf16_p(s, |t| { f(t as *u16) })
+    }
+
+    pub fn as_mut_utf16_p<T>(s: &str, f: |*mut u16| -> T) -> T {
         let mut t = s.to_utf16();
         // Null terminate before passing on.
         t.push(0u16);
-        f(t.as_ptr())
+        f(t.as_mut_ptr())
     }
 }