diff --git a/lld/ELF/InputFiles.cpp b/lld/ELF/InputFiles.cpp
--- a/lld/ELF/InputFiles.cpp
+++ b/lld/ELF/InputFiles.cpp
@@ -1161,8 +1161,7 @@
   if (tar && c.getParent()->isThin())
     tar->append(relativeToRoot(CHECK(c.getFullName(), this)), mb.getBuffer());
 
-  InputFile *file = createObjectFile(
-      mb, getName(), c.getParent()->isThin() ? 0 : c.getChildOffset());
+  InputFile *file = createObjectFile(mb, getName(), c.getChildOffset());
   file->groupId = groupId;
   parseFile(file);
 }
diff --git a/lld/test/ELF/lto/thinlto-thinarchivecollision.ll b/lld/test/ELF/lto/thinlto-thinarchivecollision.ll
new file mode 100644
--- /dev/null
+++ b/lld/test/ELF/lto/thinlto-thinarchivecollision.ll
@@ -0,0 +1,27 @@
+; REQUIRES: x86
+; RUN: rm -fr %T/thinlto-archives
+; RUN: mkdir %T/thinlto-archives %T/thinlto-archives/a %T/thinlto-archives/b
+; RUN: opt -thinlto-bc -o %T/thinlto-archives/main.o %s
+; RUN: opt -thinlto-bc -o %T/thinlto-archives/a/thin.o %S/Inputs/thin1.ll
+; RUN: opt -thinlto-bc -o %T/thinlto-archives/b/thin.o %S/Inputs/thin2.ll
+; RUN: llvm-ar qcT %T/thinlto-archives/thin.a %T/thinlto-archives/a/thin.o %T/thinlto-archives/b/thin.o
+; RUN: ld.lld --entry=main %T/thinlto-archives/main.o %T/thinlto-archives/thin.a -o %T/thinlto-archives/main.exe -save-temps
+; RUN: FileCheck %s < %T/thinlto-archives/main.exe.resolution.txt
+
+; CHECK: {{[/\\]thinlto-archives[/\\]main.o$}}
+; CHECK: {{[/\\]thinlto-archives[/\\]thin.a\(thin.o at [1-9][0-9]+\)$}}
+; CHECK-NEXT: {{-r=.*[/\\]thinlto-archives[/\\]thin.a\(thin.o at [1-9][0-9]+\),foo,pl$}}
+; CHECK: {{[/\\]thinlto-archives[/\\]thin.a\(thin.o at [1-9][0-9]+\)$}}
+; CHECK-NEXT: {{-r=.*[/\\]thinlto-archives[/\\]thin.a\(thin.o at [1-9][0-9]+\),blah,pl$}}
+
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-scei-ps4"
+
+declare i32 @blah(i32 %meh)
+declare i32 @foo(i32 %goo)
+
+define i32 @main() {
+  call i32 @foo(i32 0)
+  call i32 @blah(i32 0)
+  ret i32 0
+}
\ No newline at end of file
diff --git a/lld/test/ELF/lto/thinlto.ll b/lld/test/ELF/lto/thinlto.ll
--- a/lld/test/ELF/lto/thinlto.ll
+++ b/lld/test/ELF/lto/thinlto.ll
@@ -62,7 +62,7 @@
 ; RUN: cp %t2.o %t.dir/t.o
 ; RUN: llvm-ar rcsT %t.dir/t.a %t.dir/t.o
 ; RUN: ld.lld -save-temps %t1.o %t.dir/t.a -o %t.null
-; RUN: ls '%t.dir/t.a(t.o at 0).0.preopt.bc'
+; RUN: ls %t.dir/t.a\(t.o\ at\ *\).0.preopt.bc
 
 ; NM1: T f
 ; NM2: T g