[SemaCXX] add -Woverride-init alias to -Winitializer-overrides

Summary: https://bugs.llvm.org/show_bug.cgi?id=40251 ClangBuiltLinux/linux#307 Reviewers: rsmith Reviewed By: rsmith Subscribers: cfe-commits, nathanchance, srhines Differential Revision: https://reviews.llvm.org/D56522 llvm-svn: 350877
llvm · Jan 10, 2019 · 2383aad · 2383aad
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diff --git a/clang/docs/DiagnosticsReference.rst b/clang/docs/DiagnosticsReference.rst
@@ -7885,6 +7885,10 @@ This diagnostic is enabled by default.
 |                                                                                               |+---------------------+|
 +-----------------------------------------------------------------------------------------------+-----------------------+
 
+-Woverride-init
+--------------
+Synonym for `-Winitializer-overrides`_.
+
 
 -Woverride-module
 -----------------

diff --git a/clang/include/clang/Basic/DiagnosticGroups.td b/clang/include/clang/Basic/DiagnosticGroups.td
@@ -365,6 +365,8 @@ def NullArithmetic : DiagGroup<"null-arithmetic">;
 def NullCharacter : DiagGroup<"null-character">;
 def NullDereference : DiagGroup<"null-dereference">;
 def InitializerOverrides : DiagGroup<"initializer-overrides">;
+// For compatibility with GCC; -Woverride-init = -Winitializer-overrides
+def : DiagGroup<"override-init", [InitializerOverrides]>;
 def NonNull : DiagGroup<"nonnull">;
 def NonPODVarargs : DiagGroup<"non-pod-varargs">;
 def ClassVarargs : DiagGroup<"class-varargs", [NonPODVarargs]>;

diff --git a/clang/test/SemaCXX/designated-initializers.cpp b/clang/test/SemaCXX/designated-initializers.cpp
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify -Winitializer-overrides %s
+// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify -Woverride-init %s
 
 template <typename T> struct Foo {
   struct SubFoo {