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Use [[maybe_unused]] with C++17

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This commit is contained in:
Roelf-Jilling 2020-01-14 17:38:42 +01:00
parent 186f5d21c1
commit d08ff53e61
2 changed files with 23 additions and 7 deletions
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16
tests/CMakeLists.txt
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@ -57,9 +57,11 @@ if(MSVC) # MSVC or simulating MSVC
-Wno-missing-prototypes
-Wno-shift-sign-overflow # GTest gtest-port.h
-Wno-undef # GTest
-Wno-unused-variable
-Wno-used-but-marked-unused # GTest EXPECT_DEATH
$<$<EQUAL:${GSL_CXX_STANDARD},14>:-Wno-unused-member-function>
$<$<EQUAL:${GSL_CXX_STANDARD},14>: # no support for [[maybe_unused]]
-Wno-unused-member-function
-Wno-unused-variable
>
>
)
else()
@ -85,17 +87,23 @@ else()
-Wno-missing-prototypes
-Wno-padded
-Wno-unknown-attributes
-Wno-unused-variable
-Wno-used-but-marked-unused # GTest EXPECT_DEATH
$<$<EQUAL:${GSL_CXX_STANDARD},14>:-Wno-unused-member-function>
-Wno-weak-vtables
$<$<EQUAL:${GSL_CXX_STANDARD},14>: # no support for [[maybe_unused]]
-Wno-unused-member-function
-Wno-unused-variable
>
>
$<$<CXX_COMPILER_ID:Clang>:
$<$<CXX_COMPILER_VERSION:5.0.2>:-Wno-undefined-func-template>
>
$<$<CXX_COMPILER_ID:GNU>:
$<$<NOT:$<VERSION_LESS:$<CXX_COMPILER_VERSION>,6>>:
$<$<EQUAL:${GSL_CXX_STANDARD},14>: # no support for [[maybe_unused]]
-Wno-unused-variable
>
>
>
)
endif(MSVC)

8
tests/span_tests.cpp
View File

@ -1287,7 +1287,11 @@ TEST(span_test, from_array_constructor)
auto beyond = s.rend();
EXPECT_TRUE(it != beyond);
#if (__cplusplus > 201402L)
EXPECT_DEATH([[maybe_unused]] auto _ = *beyond , deathstring);
#else
EXPECT_DEATH(auto _ = *beyond , deathstring);
#endif
EXPECT_TRUE(beyond - first == 4);
EXPECT_TRUE(first - first == 0);
@ -1332,7 +1336,11 @@ TEST(span_test, from_array_constructor)
auto beyond = s.crend();
EXPECT_TRUE(it != beyond);
#if (__cplusplus > 201402L)
EXPECT_DEATH([[maybe_unused]] auto _ = *beyond, deathstring);
#else
EXPECT_DEATH(auto _ = *beyond, deathstring);
#endif
EXPECT_TRUE(beyond - first == 4);
EXPECT_TRUE(first - first == 0);