From: Chandler Carruth <chandlerc@gmail.com>
Date: Thu, 5 Sep 2013 10:09:03 +0000 (+0000)
Subject: Support suppressing unused arguments warnings as a core option so that
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b2c70470def1ab0380be36a295ce4aa7864abfe1;p=clang

Support suppressing unused arguments warnings as a core option so that
it works in the CL flavor driver.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190040 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/Driver/Options.td b/include/clang/Driver/Options.td
index f204ae1ce9..26a6e216ea 100644
--- a/include/clang/Driver/Options.td
+++ b/include/clang/Driver/Options.td
@@ -219,7 +219,7 @@ def Ofast : Joined<["-"], "Ofast">, Group<O_Group>, Flags<[CC1Option]>;
 def P : Flag<["-"], "P">, Flags<[CC1Option]>,
   HelpText<"Disable linemarker output in -E mode">;
 def Qn : Flag<["-"], "Qn">;
-def Qunused_arguments : Flag<["-"], "Qunused-arguments">, Flags<[DriverOption]>,
+def Qunused_arguments : Flag<["-"], "Qunused-arguments">, Flags<[DriverOption, CoreOption]>,
   HelpText<"Don't emit warning for unused driver arguments">;
 def Q : Flag<["-"], "Q">;
 def R : Flag<["-"], "R">;
diff --git a/test/Driver/cl-options.c b/test/Driver/cl-options.c
index 899efe481a..5387d2fa57 100644
--- a/test/Driver/cl-options.c
+++ b/test/Driver/cl-options.c
@@ -98,6 +98,10 @@
 // RUN: %clang_cl /Zs /WX /analyze- /errorReport:foo /nologo /Ob1 /Ob2 -- %s
 // RUN: %clang_cl /Zs /WX /Zc:forScope /Zc:wchar_t /wd1234 -- %s
 
+// Support ignoring warnings about unused arguments.
+// RUN: %clang_cl /Abracadabra -Qunused-arguments -### -- %s 2>&1 | FileCheck -check-prefix=UNUSED %s
+// UNUSED-NOT: warning
+
 
 // Unsupported but parsed options. Check that we don't error on them.
 // (/Zs is for syntax-only)