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Merge pull request #360 from Lastique/update_alignas_test

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Update the test for C++11 alignas to trigger failure on gcc 4.8
This commit is contained in:
jzmaddock
2021-02-25 16:55:57 +00:00
committed by GitHub
parent 1c45d765f1 6eb97fb526
commit b6b1791741
2 changed files with 8 additions and 7 deletions
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2
include/boost/config/compiler/gcc.hpp
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@ -271,7 +271,7 @@
// //
#if (BOOST_GCC_VERSION < 40900) || !defined(BOOST_GCC_CXX11) #if (BOOST_GCC_VERSION < 40900) || !defined(BOOST_GCC_CXX11)
// Although alignas support is added in gcc 4.8, it does not accept // Although alignas support is added in gcc 4.8, it does not accept
// constant expressions as an argument until gcc 4.9. // dependent constant expressions as an argument until gcc 4.9.
# define BOOST_NO_CXX11_ALIGNAS # define BOOST_NO_CXX11_ALIGNAS
#endif #endif

13
test/boost_no_cxx11_alignas.ipp
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@ -12,10 +12,10 @@
namespace boost_no_cxx11_alignas { namespace boost_no_cxx11_alignas {
template< unsigned int Alignment > template< typename T >
struct alignment struct alignment_of
{ {
static const unsigned int value = Alignment; static const unsigned int value = sizeof(T);
}; };
struct alignas(16) my_data1 struct alignas(16) my_data1
@ -28,17 +28,18 @@ struct alignas(double) my_data2
char data[16]; char data[16];
}; };
struct alignas(alignment< 16u >::value) my_data3 template< typename T >
struct alignas(alignment_of< T >::value) my_data3
{ {
char data[16]; char data[16];
}; };
my_data1 dummy1[2]; my_data1 dummy1[2];
my_data2 dummy2; my_data2 dummy2;
my_data3 dummy3; my_data3< int > dummy3;
alignas(16) char dummy4[10]; alignas(16) char dummy4[10];
alignas(double) char dummy5[32]; alignas(double) char dummy5[32];
alignas(alignment< 16u >::value) char dummy6[32]; alignas(alignment_of< int >::value) char dummy6[32];
int test() int test()
{ {