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Add -Wno-nested-anon-types to -pedantic builds of LLVM. This Clang warning

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catches uses of an extremely minor and widely-available C++ extension (which
every C++ compiler I could find supports, but EDG and Clang reject in strict
mode).

The diagnosed code pattern looks like this:

struct X {
  union {
    struct {
      int a;
      int b;
    } S;
  };
};


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174103 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Smith
2013-01-31 22:19:12 +00:00
parent ac1b2e5550
commit 1983f54dae
5 changed files with 15 additions and 4 deletions
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cmake/modules/HandleLLVMOptions.cmake
+4
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@@ -193,6 +193,10 @@ elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE )
if (LLVM_ENABLE_PEDANTIC)
add_llvm_definitions( -pedantic -Wno-long-long )
check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG)
if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" )
endif()
endif (LLVM_ENABLE_PEDANTIC)
check_cxx_compiler_flag("-Werror -Wcovered-switch-default" CXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG)
if( CXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG )