pmaports/cross/gcc-riscv64/0054-libphobos-fix-undefined-reference-to-__cmsg_nxthdr-w.patch

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From 7b8400f902ef25ea71ed460716c1afedca357a61 Mon Sep 17 00:00:00 2001
From: Natanael Copa <ncopa@alpinelinux.org>
Date: Wed, 2 Nov 2022 12:31:36 +0100
Subject: [PATCH] libphobos: fix undefined reference to `__cmsg_nxthdr' with
musl
Ported fix from upstream.
Upstream: https://github.com/dlang/dmd/commit/54544260a848c8ebad5582e27ac1e09627cdfb17
Bug-URL: https://issues.dlang.org/show_bug.cgi?id=23157
---
.../libdruntime/core/sys/posix/sys/socket.d | 36 +++++++++++++++++--
1 file changed, 33 insertions(+), 3 deletions(-)
diff --git a/libphobos/libdruntime/core/sys/posix/sys/socket.d b/libphobos/libdruntime/core/sys/posix/sys/socket.d
index c1309a68c9c..e3b536d87e7 100644
--- a/libphobos/libdruntime/core/sys/posix/sys/socket.d
+++ b/libphobos/libdruntime/core/sys/posix/sys/socket.d
@@ -188,10 +188,40 @@ version (linux)
extern (D) inout(ubyte)* CMSG_DATA( return scope inout(cmsghdr)* cmsg ) pure nothrow @nogc { return cast(ubyte*)( cmsg + 1 ); }
- private inout(cmsghdr)* __cmsg_nxthdr(inout(msghdr)*, inout(cmsghdr)*) pure nothrow @nogc;
- extern (D) inout(cmsghdr)* CMSG_NXTHDR(inout(msghdr)* msg, inout(cmsghdr)* cmsg) pure nothrow @nogc
+ version (CRuntime_Musl)
{
- return __cmsg_nxthdr(msg, cmsg);
+ extern (D)
+ {
+ private size_t __CMSG_LEN(inout(cmsghdr)* cmsg) pure nothrow @nogc
+ {
+ return (cmsg.cmsg_len + size_t.sizeof -1) & cast(size_t)(~(size_t.sizeof - 1));
+ }
+
+ private inout(cmsghdr)* __CMSG_NEXT(inout(cmsghdr)* cmsg) pure nothrow @nogc
+ {
+ return cmsg + __CMSG_LEN(cmsg);
+ }
+
+ private inout(msghdr)* __MHDR_END(inout(msghdr)* mhdr) pure nothrow @nogc
+ {
+ return cast(inout(msghdr)*)(mhdr.msg_control + mhdr.msg_controllen);
+ }
+
+ inout(cmsghdr)* CMSG_NXTHDR(inout(msghdr)* msg, inout(cmsghdr)* cmsg) pure nothrow @nogc
+ {
+ return cmsg.cmsg_len < cmsghdr.sizeof ||
+ __CMSG_LEN(cmsg) + cmsghdr.sizeof >= __MHDR_END(msg) - cast(inout(msghdr)*)(cmsg)
+ ? cast(inout(cmsghdr)*) null : cast(inout(cmsghdr)*) __CMSG_NEXT(cmsg);
+ }
+ }
+ }
+ else
+ {
+ private inout(cmsghdr)* __cmsg_nxthdr(inout(msghdr)*, inout(cmsghdr)*) pure nothrow @nogc;
+ extern (D) inout(cmsghdr)* CMSG_NXTHDR(inout(msghdr)* msg, inout(cmsghdr)* cmsg) pure nothrow @nogc
+ {
+ return __cmsg_nxthdr(msg, cmsg);
+ }
}
extern (D) inout(cmsghdr)* CMSG_FIRSTHDR( inout(msghdr)* mhdr ) pure nothrow @nogc
--
2.38.1