https://llvm.org/bugs/show_bug.cgi?id=28256
Bug ID: 28256
Summary: [LTO] duplicated symbols in libc.a and libpthread.a
(FreeBSD)
Product: lld
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: unassignedb...@nondot.org
Reporter: dav...@freebsd.org
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
This happens while building the clang provided in FreeBSD, with (pretty much)
every symbol like _pthread*
duplicate symbol: _pthread_exit in
usr/home/buildbot/obj/usr/home/buildbot/freebsd/tmp/usr/lib/libpthread.a(thr_exit.o)
and
usr/home/buildbot/obj/usr/home/buildbot/freebsd/tmp/usr/lib/libc.a(_pthread_stub
s.o)
[...]
thr_exit.o contains:
module asm ".weak pthread_exit"
module asm ".equ pthread_exit, _pthread_exit"
; Function Attrs: noreturn uwtable
define void @_pthread_exit(i8* %status) #0 {
entry:
tail call void @_pthread_exit_mask(i8* %status, %struct.__sigset* null) #6
unreachable
}
and _pthread_stubs.o
module asm ".weak _pthread_exit"
module asm ".equ _pthread_exit, pthread_exit_int"
define internal void @pthread_exit_int(i8* %p0) #2 {
entry:
%0 = load void (i8*)*, void (i8*)** bitcast (i32 ()** getelementptr inbounds
([66 x [2 x i32 ()*]], [66 x [2 x i32 ()*]]* @__thr_jtable, i64 0, i64 30, i64
1) to void (i8*)**), align 8, !tbaa !1
tail call void %0(i8* %p0) #5
ret void
}
Reproduce coming.
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