From: Rich Felker <dalias@aerifal.cx>
Date: Tue, 27 May 2014 01:26:46 +0000 (-0400)
Subject: fix type of extended argument array to pselect6 syscall
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;ds=sidebyside;h=4ef04a27c7cf81db13316ceb6e840527977a7787;p=musl

fix type of extended argument array to pselect6 syscall

this only matters on x32 (and perhaps future 32-on-64 abis for other
archs); otherwise the type is long anyway. the cast through uintptr_t
prevents nonsensical "sign extension" of pointers, and follows the
principle that uintptr_t is the canonical integer type to which
pointer conversion is safe.
---

diff --git a/src/select/pselect.c b/src/select/pselect.c
index a19e153e..4e2d7b07 100644
--- a/src/select/pselect.c
+++ b/src/select/pselect.c
@@ -1,11 +1,12 @@
 #include <sys/select.h>
 #include <signal.h>
+#include <stdint.h>
 #include "syscall.h"
 #include "libc.h"
 
 int pselect(int n, fd_set *restrict rfds, fd_set *restrict wfds, fd_set *restrict efds, const struct timespec *restrict ts, const sigset_t *restrict mask)
 {
-	long data[2] = { (long)mask, _NSIG/8 };
+	syscall_arg_t data[2] = { (uintptr_t)mask, _NSIG/8 };
 	struct timespec ts_tmp;
 	if (ts) ts_tmp = *ts;
 	return syscall_cp(SYS_pselect6, n, rfds, wfds, efds, ts ? &ts_tmp : 0, data);