Index: clang/lib/Driver/Driver.cpp =================================================================== --- clang/lib/Driver/Driver.cpp +++ clang/lib/Driver/Driver.cpp @@ -4427,6 +4427,11 @@ if (auto P = SearchPaths(PrefixDirs)) return *P; + SmallString<128> D(Dir); + llvm::sys::path::append(D, "..", Name); + if (llvm::sys::fs::exists(Twine(D))) + return D.str(); + SmallString<128> R(ResourceDir); llvm::sys::path::append(R, Name); if (llvm::sys::fs::exists(Twine(R))) Index: clang/test/Driver/print-file-name.c =================================================================== --- /dev/null +++ clang/test/Driver/print-file-name.c @@ -0,0 +1,19 @@ +// Test that -print-file-name finds the correct file. + +// RUN: %clang -print-file-name=share/asan_blacklist.txt 2>&1 \ +// RUN: -resource-dir=%S/Inputs/resource_dir \ +// RUN: --target=x86_64-linux-gnu \ +// RUN: | FileCheck --check-prefix=CHECK-RESOURCE-DIR %s +// CHECK-RESOURCE-DIR: resource_dir{{/|\\\\}}share{{/|\\\\}}asan_blacklist.txt + +// RUN: %clang -print-file-name=libclang_rt.builtins.a 2>&1 \ +// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \ +// RUN: --target=x86_64-linux-gnu \ +// RUN: | FileCheck --check-prefix=CHECK-COMPILER-RT %s +// CHECK-COMPILER-RT: resource_dir_with_per_target_subdir{{/|\\\\}}lib{{/|\\\\}}x86_64-linux-gnu{{/|\\\\}}libclang_rt.builtins.a + +// RUN: %clang -print-file-name=include/c++/v1 2>&1 \ +// RUN: -ccc-install-dir %S/Inputs/basic_linux_libcxx_tree/usr/bin \ +// RUN: --target=x86_64-linux-gnu \ +// RUN: | FileCheck --check-prefix=CHECK-INSTALL-DIR %s +// CHECK-INSTALL-DIR: basic_linux_libcxx_tree{{/|\\\\}}usr{{/|\\\\}}bin{{/|\\\\}}..{{/|\\\\}}include{{/|\\\\}}c++{{/|\\\\}}v1