../../src/misc/pv/anyscalar.h: In member function 'void epics::pvData::PVScalarValue<T>::getAs(epics::pvData::AnyScalar&) const [with T = float]':
../../src/misc/pv/anyscalar.h:113: warning: dereferencing pointer '<anonymous>' does break strict-aliasing rules
../../src/misc/pv/anyscalar.h:113: note: initialized from here
As this has come up twice (by @dirk-zimoch ), I want to document the outcome.
This warning is (so far) only seen of GCC versions near 4.4.x. Neither older, nor newer, compilers are complaining (eg. gcc 6.3.0 doesn't). As long as this remains the case, and no mis-behavior is observed (eg. from testanyscalar), then I don't intent to take any action. Concerned users can build with -fno-strict-aliasing.
As this has come up twice (by @dirk-zimoch ), I want to document the outcome.
This warning is (so far) only seen of GCC versions near 4.4.x. Neither older, nor newer, compilers are complaining (eg. gcc 6.3.0 doesn't). As long as this remains the case, and no mis-behavior is observed (eg. from
testanyscalar), then I don't intent to take any action. Concerned users can build with-fno-strict-aliasing.