remove cxx03 test, fully unblocking c++1X development

test/BUILD

@@ -98,28 +98,11 @@ cc_library(
         ["*_test.cc"],
         exclude = [
             "*_assembly_test.cc",
-            "cxx03_test.cc",
             "link_main_test.cc",
         ],
     )
 ]
 
-cc_test(
-    name = "cxx03_test",
-    size = "small",
-    srcs = ["cxx03_test.cc"],
-    copts = TEST_COPTS + ["-std=c++03"],
-    target_compatible_with = select({
-        "//:windows": ["@platforms//:incompatible"],
-        "//conditions:default": [],
-    }),
-    deps = [
-        ":output_test_helper",
-        "//:benchmark",
-        "//:benchmark_internal_headers",
-    ],
-)
-
 cc_test(
     name = "link_main_test",
     size = "small",

test/CMakeLists.txt

@@ -195,32 +195,6 @@ benchmark_add_test(NAME memory_manager_test COMMAND memory_manager_test --benchm
 compile_output_test(profiler_manager_test)
 benchmark_add_test(NAME profiler_manager_test COMMAND profiler_manager_test --benchmark_min_time=0.01s)
 
-# MSVC does not allow to set the language standard to C++98/03.
-if(NOT (MSVC OR CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC"))
-  compile_benchmark_test(cxx03_test)
-  set_target_properties(cxx03_test
-      PROPERTIES
-      CXX_STANDARD 98
-      CXX_STANDARD_REQUIRED YES)
-  # libstdc++ provides different definitions within <map> between dialects. When
-  # LTO is enabled and -Werror is specified GCC diagnoses this ODR violation
-  # causing the test to fail to compile. To prevent this we explicitly disable
-  # the warning.
-  check_cxx_compiler_flag(-Wno-odr BENCHMARK_HAS_WNO_ODR)
-  check_cxx_compiler_flag(-Wno-lto-type-mismatch BENCHMARK_HAS_WNO_LTO_TYPE_MISMATCH)
-  # Cannot set_target_properties multiple times here because the warnings will
-  # be overwritten on each call
-  set (DISABLE_LTO_WARNINGS "")
-  if (BENCHMARK_HAS_WNO_ODR)
-    set(DISABLE_LTO_WARNINGS "${DISABLE_LTO_WARNINGS} -Wno-odr")
-  endif()
-  if (BENCHMARK_HAS_WNO_LTO_TYPE_MISMATCH)
-    set(DISABLE_LTO_WARNINGS "${DISABLE_LTO_WARNINGS} -Wno-lto-type-mismatch")
-  endif()
-  set_target_properties(cxx03_test PROPERTIES LINK_FLAGS "${DISABLE_LTO_WARNINGS}")
-  benchmark_add_test(NAME cxx03 COMMAND cxx03_test --benchmark_min_time=0.01s)
-endif()
-
 compile_output_test(complexity_test)
 benchmark_add_test(NAME complexity_benchmark COMMAND complexity_test --benchmark_min_time=1000000x)
 
@@ -296,7 +270,7 @@ if (${CMAKE_BUILD_TYPE_LOWER} MATCHES "coverage")
       COMMAND ${LCOV} -q -a before.lcov -a after.lcov --output-file final.lcov
       COMMAND ${LCOV} -q -r final.lcov "'${CMAKE_SOURCE_DIR}/test/*'" -o final.lcov
       COMMAND ${GENHTML} final.lcov -o lcov --demangle-cpp --sort -p "${CMAKE_BINARY_DIR}" -t benchmark
-      DEPENDS filter_test benchmark_test options_test basic_test fixture_test cxx03_test complexity_test
+      DEPENDS filter_test benchmark_test options_test basic_test fixture_test complexity_test
       WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
       COMMENT "Running LCOV"
     )