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esp_attr: add flag_attr to support enums used as flags

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This commit is contained in:
Michael (XIAO Xufeng)
2019-08-08 17:49:12 +08:00
parent 264ffbeb14
commit d850a0bd1c
3 changed files with 53 additions and 1 deletions
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28
components/cxx/test/test_cxx.cpp
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@@ -319,3 +319,31 @@ TEST_CASE("can call std::function and bind", "[cxx]")
#endif
/* Tests below are done in the compile time, don't actually get run. */
/* Check whether a enumerator flag can be used in C++ */
template<typename T> __attribute__((unused)) static void test_binary_operators()
{
T flag1 = (T)0;
T flag2 = (T)0;
flag1 = ~flag1;
flag1 = flag1 | flag2;
flag1 = flag1 & flag2;
flag1 = flag1 ^ flag2;
flag1 = flag1 >> 2;
flag1 = flag1 << 2;
flag1 |= flag2;
flag1 &= flag2;
flag1 ^= flag2;
flag1 >>= 2;
flag1 <<= 2;
}
//Add more types here. If any flags cannot pass the build, use FLAG_ATTR in esp_attr.h
#include "hal/timer_types.h"
template void test_binary_operators<timer_intr_t>();