gistfile1.txt

diff --git a/src/gauche/win-compat.h b/src/gauche/win-compat.h
index c0a1ec6..50cd556 100644
--- a/src/gauche/win-compat.h
+++ b/src/gauche/win-compat.h
@@ -146,11 +146,11 @@ int sigaction(int signum, const struct sigaction *act, struct sigaction *oact);
 
 /* Implementation of Scm_MBS2WCS/WCS2MBS is in win-compat.c */
 #if defined(LIBGAUCHE_BODY)
-extern __declspec(dllexport) WCHAR *Scm_MBS2WCS(const char *s);
-extern __declspec(dllexport) const char *Scm_WCS2MBS(const WCHAR *s);
+extern "C" __declspec(dllexport) WCHAR *Scm_MBS2WCS(const char *s);
+extern "C" __declspec(dllexport) const char *Scm_WCS2MBS(const WCHAR *s);
 #else  /*!LIBGAUCHE_BODY*/
-extern __declspec(dllimport) WCHAR *Scm_MBS2WCS(const char *s);
-extern __declspec(dllimport) const char *Scm_WCS2MBS(const WCHAR *s);
+extern "C" __declspec(dllimport) WCHAR *Scm_MBS2WCS(const char *s);
+extern "C" __declspec(dllimport) const char *Scm_WCS2MBS(const WCHAR *s);
 #endif /*!LIBGAUCHE_BODY*/
 
 #if defined(UNICODE)