Add empty --gcc-toolchain empty to cuda-detect test.

Unless we overload the default gcc toolchain with an empty string
the system root used in the tests will be ignored if the user builds
clang  with a custom gcc toolchain.

llvm-svn: 278806

diff --git a/clang/test/Driver/cuda-detect.cu b/clang/test/Driver/cuda-detect.cu
index c4c1772..7bbda1b 100644 (file)
--- a/clang/test/Driver/cuda-detect.cu
+++ b/clang/test/Driver/cuda-detect.cu
@@ -75,6 +75,7 @@
 // Verify that C++ include paths are passed for both host and device frontends.
 // RUN: %clang -### -no-canonical-prefixes -target x86_64-linux-gnu %s \
 // RUN: --stdlib=libstdc++ --sysroot=%S/Inputs/ubuntu_14.04_multiarch_tree2 2>&1 \
+// RUN: --gcc-toolchain="" \
 // RUN: | FileCheck %s --check-prefix CHECK-CXXINCLUDE
 
 // CHECK: Found CUDA installation: {{.*}}/Inputs/CUDA/usr/local/cuda