$ cat f.c
int f() {
  volatile int i;
  return i;
}
$ cat g.c
int g() {
  volatile int i;
  return i;
}
$ cat main.c
int f();
int g();

int main() {
  return f() + g();
}
$ clang -g f.c -c -o f/foo.o
$ clang -g g.c -c -o g/foo.o
$ libtool -static f/foo.o g/foo.o -o foo.a
$ clang main.o foo.a -o main.out

RUN: dsymutil -oso-prepend-path %p/../Inputs %p/../Inputs/private/tmp/collision/main.out --dump-debug-map 2>&1 | FileCheck %s
CHECK: skipping debug map object with duplicate name and timestamp: {{.*}} /private/tmp/collision/foo.a(foo.o)
CHECK-NOT: could not find symbol '_g'
CHECK-NOT: could not find symbol '_f'