lib/48785: Error in __libc_thr_exit_stub when building with clang

[jan.m.danielsson%gmail.com@localhost]

>Number:         48785
>Category:       lib
>Synopsis:       Error in __libc_thr_exit_stub when building with clang
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 05 16:45:00 +0000 2014
>Originator:     Jan Danielsson
>Release:        netbsd-6
>Organization:
La Cosa Nostra
>Environment:
NetBSD gauss 6.1_STABLE NetBSD 6.1_STABLE (GAUSS) #0: Sat Aug 31 16:26:22 CEST 
2013  
jan@gauss:/home/jan/tmp/sysbuild/obj.amd64/usr/src/sys/arch/amd64/compile/GAUSS 
amd64

>Description:
When building netbsd-6 using clang an error is generated when building 
lib/libc/thread-stub/thread-stub.c because __libc_thr_exit_stub is dead.
>How-To-Repeat:
Build netbsd-6 using:

export MKLLVM=yes
export HAVE_LLVM=yes

>Fix:
deadify function.

Index: lib/libc/thread-stub/thread-stub.c
==================================================================
--- lib/libc/thread-stub/thread-stub.c
+++ lib/libc/thread-stub/thread-stub.c
@@ -408,11 +408,11 @@
        DIE();
 
        return (EOPNOTSUPP);
 }
 
-void
+__dead void
 __libc_thr_exit_stub(void *v)
 {
        /* LINTED deliberate lack of effect */
        (void)v;
        exit(0);