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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 2bd85a37..c56fb4f 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -365,6 +365,7 @@ long sysconf(int);
pid_t tcgetpgrp(int);
int tcsetpgrp(int, pid_t);
char *ttyname(int);
+char *ttyname_r(int, char *, size_t);
int unlink(const char *);
ssize_t write(int, const void *, size_t);
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