RUN: llvm-dsymutil -f -o - -oso-prepend-path=%p/.. %p/../Inputs/basic-with-libfat-test.macho.x86_64 | llvm-dwarfdump - | FileCheck %s 

The test binary was created by force-linking the libfat-test.a fat archive
with the basic linking test archive, like so:
$ clang -all_load libfat-test.a libbasic.a basic1.macho.x86_64.o -Wl,-dead_strip -u _x86_64_var

CHECK: DW_AT_name{{.*}}"x86_64_var"
CHECK: DW_AT_name{{.*}}"basic2.c"
CHECK: DW_AT_name{{.*}}"basic3.c"
CHECK: DW_AT_name{{.*}}"basic1.c"