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-rw-r--r--otherlibs/win32unix/unixsupport.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/otherlibs/win32unix/unixsupport.h b/otherlibs/win32unix/unixsupport.h
index da5f47cff..195db0351 100644
--- a/otherlibs/win32unix/unixsupport.h
+++ b/otherlibs/win32unix/unixsupport.h
@@ -39,6 +39,7 @@ struct filedescr {
extern value win_alloc_handle_or_socket(HANDLE);
extern value win_alloc_handle(HANDLE);
extern value win_alloc_socket(SOCKET);
+extern int win_CRT_fd_of_filedescr(value handle);
#define NO_CRT_FD (-1)
#define Nothing ((value) 0)