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-rw-r--r--posix/unistd.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/posix/unistd.h b/posix/unistd.h
index 8c8a48842b..1e35ea0392 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -723,7 +723,7 @@ extern __ptr_t sbrk __P ((ptrdiff_t __delta));
In Mach, all system calls take normal arguments and always return an
error code (zero for success). */
-extern int syscall __P ((int __sysno, ...));
+extern long int syscall __P ((long int __sysno, ...));
#endif /* Use misc. */