include header that declares __syscall_ret where it's defined

in general, we aim to always include the header that's declaring a
function before defining it so that the compiler can check that
prototypes match.

additionally, the internal syscall.h declares __syscall_ret with a
visibility attribute to improve code generation for shared libc (to
prevent gratuitous GOT-register loads). this declaration should be
visible at the point where __syscall_ret is defined, too, or the
inconsistency could theoretically lead to problems at link-time.

diff --git a/src/internal/syscall_ret.c b/src/internal/syscall_ret.c
index d99f4a5..a3f4713 100644 (file)
--- a/src/internal/syscall_ret.c
+++ b/src/internal/syscall_ret.c
@@ -1,4 +1,5 @@
 #include <errno.h>
+#include "syscall.h"
 
 long __syscall_ret(unsigned long r)
 {