def no_integrated_cpp : Flag<["-", "--"], "no-integrated-cpp">, Flags<[DriverOption]>;
def no_pedantic : Flag<["-", "--"], "no-pedantic">, Group<pedantic_Group>;
def no__dead__strip__inits__and__terms : Flag<["-"], "no_dead_strip_inits_and_terms">;
-def nobuiltininc : Flag<["-"], "nobuiltininc">, Flags<[CC1Option]>,
+def nobuiltininc : Flag<["-"], "nobuiltininc">, Flags<[CC1Option, CoreOption]>,
HelpText<"Disable builtin #include directories">;
def nocudainc : Flag<["-"], "nocudainc">;
def nocudalib : Flag<["-"], "nocudalib">;
def noprebind : Flag<["-"], "noprebind">;
def noseglinkedit : Flag<["-"], "noseglinkedit">;
def nostartfiles : Flag<["-"], "nostartfiles">;
-def nostdinc : Flag<["-"], "nostdinc">;
+def nostdinc : Flag<["-"], "nostdinc">, Flags<[CoreOption]>;
def nostdlibinc : Flag<["-"], "nostdlibinc">;
def nostdincxx : Flag<["-"], "nostdinc++">, Flags<[CC1Option]>,
HelpText<"Disable standard #include directories for the C++ standard library">;
--- /dev/null
+// Note: %s must be preceded by --, otherwise it may be interpreted as a
+// command-line option, e.g. on Mac where %s is commonly under /Users.
+
+// RUN: %clang_cl -### -- %s 2>&1 | FileCheck %s --check-prefix=BUILTIN
+// BUILTIN: "-internal-isystem" "{{.*lib.*clang.*[0-9]\.[0-9].*include}}"
+
+// RUN: %clang_cl -nobuiltininc -### -- %s 2>&1 | FileCheck %s --check-prefix=NOBUILTIN
+// NOBUILTIN-NOT: "-internal-isystem" "{{.*lib.*clang.*[0-9]\.[0-9].*include}}"
+
+// RUN: env INCLUDE=/my/system/inc %clang_cl -### -- %s 2>&1 | FileCheck %s --check-prefix=STDINC
+// STDINC: "-internal-isystem" "/my/system/inc"
+
+// RUN: env INCLUDE=/my/system/inc %clang_cl -nostdinc -### -- %s 2>&1 | FileCheck %s --check-prefix=NOSTDINC
+// NOSTDINC-NOT: "-internal-isystem" "/my/system/inc"