Add ExtraArgs and ExtraArgsBefore options to enable clang warnings via configuration files.

Summary: This patch depends on http://reviews.llvm.org/D14191

Reviewers: djasper, klimek

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D14192

llvm-svn: 252485

1 files changed, 12 insertions, 0 deletions

diff --git a/clang-tools-extra/test/clang-tidy/custom-diagnostics.cpp b/clang-tools-extra/test/clang-tidy/custom-diagnostics.cpp
new file mode 100644
index 00000000000..61a92920317
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/custom-diagnostics.cpp
@@ -0,0 +1,12 @@
+// RUN: clang-tidy -checks='-*,modernize-use-override,clang-diagnostic-shadow,clang-diagnostic-float-conversion' %s -- | count 0
+// RUN: clang-tidy -checks='-*,modernize-use-override,clang-diagnostic-shadow,clang-diagnostic-float-conversion' \
+// RUN:   -config='{ExtraArgs: ["-Wshadow","-Wno-unused-variable"], ExtraArgsBefore: ["-Wno-shadow","-Wfloat-conversion","-Wunused-variable"]}' %s -- \
+// RUN:   | FileCheck -implicit-check-not='{{warning:|error:}}' %s
+
+void f(float x) {
+  int a;
+  { int a; }
+  // CHECK: :[[@LINE-1]]:9: warning: declaration shadows a local variable [clang-diagnostic-shadow]
+  int b = x;
+  // CHECK: :[[@LINE-1]]:11: warning: implicit conversion turns floating-point number into integer: 'float' to 'int' [clang-diagnostic-float-conversion]
+}