dln.c: non-ascii path on Windows

* dln.c (dln_load): use wchar version to load a library in
  non-ascii path on Windows.  based on the patch by Bugra Barin
  <bugrabarin AT hotmail.com> in [ruby-core:61845].  [Bug #9699]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45523 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 10 insertions, 5 deletions

diff --git a/dln.c b/dln.c
index 1f93950eaa..b3522f111c 100644
--- a/dln.c
+++ b/dln.c
@@ -1256,20 +1256,25 @@ dln_load(const char *file)
 
 #if defined _WIN32 && !defined __CYGWIN__
     HINSTANCE handle;
-    char winfile[MAXPATHLEN];
+    WCHAR *winfile;
     char message[1024];
     void (*init_fct)();
     char *buf;
 
-    if (strlen(file) >= MAXPATHLEN) dln_loaderror("filename too long");
-
     /* Load the file as an object one */
     init_funcname(&buf, file);
 
-    strlcpy(winfile, file, sizeof(winfile));
+    /* Convert the file path to wide char */
+    winfile = rb_w32_mbstr_to_wstr(CP_UTF8, file, -1, NULL);
+    if (!winfile) {
+	dln_memerror();
+    }
 
     /* Load file */
-    if ((handle = LoadLibrary(winfile)) == NULL) {
+    handle = LoadLibraryW(winfile);
+    free(winfile);
+
+    if (!handle) {
 	error = dln_strerror();
 	goto failed;
     }