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-rw-r--r--src/include/port/ultrix4.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/src/include/port/ultrix4.h b/src/include/port/ultrix4.h
index 872583bfa42..3ac95a27591 100644
--- a/src/include/port/ultrix4.h
+++ b/src/include/port/ultrix4.h
@@ -58,8 +58,6 @@ extern int gethostname(char *, int);
extern int getopt(int, char *const *, const char *);
extern int putenv(const char *);
-extern pid_t vfork(void);
-
struct itimerval;
extern int setitimer(int, const struct itimerval *, struct itimerval *);
struct timezone;