|  | // On some platforms, -stdlib=libc++ is currently ignored, so -lc++experimental is not added. | 
|  | // Once -stdlib=libc++ works on those, this XFAIL can be removed. | 
|  | // XFAIL: target={{.*-windows-msvc.*}}, target={{.*-(ps4|ps5)}} | 
|  |  | 
|  | // For some reason, this fails with a core dump on AIX. This needs to be investigated. | 
|  | // UNSUPPORTED: target={{.*}}-aix{{.*}} | 
|  |  | 
|  | // RUN: %clangxx -fexperimental-library -stdlib=libc++ -### %s 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-LIBCXX %s | 
|  | // RUN: %clangxx -fexperimental-library -stdlib=libstdc++ -### %s 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-LIBSTDCXX %s | 
|  | // RUN: %clangxx -fexperimental-library -stdlib=libc++ -nostdlib++ -### %s 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-NOSTDLIB %s | 
|  |  | 
|  | /// The FreeBSD driver did not support -stdlib=libstdc++ previously, check that it does the right thing here. | 
|  | // RUN: %clangxx --target=x86_64-unknown-freebsd -fexperimental-library -stdlib=libc++ -### %s 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-LIBCXX %s | 
|  | // RUN: %clangxx --target=x86_64-unknown-freebsd -fexperimental-library -stdlib=libstdc++ -### %s 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-LIBSTDCXX %s | 
|  | // RUN: %clangxx --target=x86_64-unknown-freebsd -fexperimental-library -stdlib=libc++ -nostdlib++ -### %s 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-NOSTDLIB %s | 
|  |  | 
|  | // -fexperimental-library must be passed to CC1. | 
|  | // CHECK: -fexperimental-library | 
|  |  | 
|  | // Depending on the stdlib in use, we should (or not) pass -lc++experimental. | 
|  | // CHECK-LIBCXX: -lc++experimental | 
|  | // CHECK-LIBSTDCXX-NOT: -lc++experimental | 
|  | // CHECK-NOSTDLIB-NOT: -lc++experimental |