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-rw-r--r--include/unistd.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/unistd.h b/include/unistd.h
index 947955469..81f8e24dc 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -566,6 +566,7 @@ libc_hidden_proto(dup2)
/* Duplicate FD to FD2, closing FD2 and making it open on the same
file while setting flags according to FLAGS. */
extern int dup3 (int __fd, int __fd2, int __flags) __THROW;
+libc_hidden_proto(dup3)
#endif
/* NULL-terminated array of "NAME=VALUE" environment variables. */