os: align siginfo argument to waitid
Backport https://golang.org/cl/46511 from gc trunk, as it may fix a
bug reported for gccgo running on MIPS
(https://groups.google.com/d/msg/golang-dev/sDg-t1_DPw0/-AJmLxgPBQAJ).
Change-Id: Icff4c70cc469b3742a03fe19a21f840dae8bfd38
Reviewed-on: https://go-review.googlesource.com/46571
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/libgo/go/os/wait_waitid.go b/libgo/go/os/wait_waitid.go
index 653fce9..3337395 100644
--- a/libgo/go/os/wait_waitid.go
+++ b/libgo/go/os/wait_waitid.go
@@ -23,7 +23,7 @@
// On Darwin, it requires greater than or equal to 64 bytes
// for darwin/{386,arm} and 104 bytes for darwin/amd64.
// We don't care about the values it returns.
- var siginfo [128]byte
+ var siginfo [16]uint64
psig := &siginfo[0]
_, _, e := syscall.Syscall6(syscall.SYS_WAITID, _P_PID, uintptr(p.Pid), uintptr(unsafe.Pointer(psig)), syscall.WEXITED|syscall.WNOWAIT, 0, 0)
runtime.KeepAlive(p)
