Tl;dr: building a simple DeepState testcase as shown below, gives the -Wmissing-noreturn warning. This might be an issue if DeepState is incorporated into a codebase that uses -Werror.

Example code

#include <deepstate/DeepState.hpp>

using namespace deepstate;

TEST(TestCaseName, TestName) {
        ASSERT(1);
}

Related build log

[1/2] Building CXX object tests/deepstate/initial/CMakeFiles/tests.deepstate.initial.dir/InitialTests.cpp.o
../tests/deepstate/initial/InitialTests.cpp:5:1: warning: function 'DeepState_Run_TestCaseName_TestName' could be declared with attribute 'noreturn' [-Wmissing-noreturn]
TEST(TestCaseName, TestName) {
^
/usr/local/include/deepstate/DeepState.hpp:679:5: note: expanded from macro 'TEST'
    DeepState_EntryPoint(category ## _ ## name)
    ^
/usr/local/include/deepstate/DeepState.h:522:5: note: expanded from macro 'DeepState_EntryPoint'
    _DeepState_EntryPoint(test_name, __FILE__, __LINE__)
    ^
/usr/local/include/deepstate/DeepState.h:553:52: note: expanded from macro '_DeepState_EntryPoint'
    static void DeepState_Run_ ## test_name (void) { \
                                                   ^
1 warning generated.

Notes

It could somehow be related to my build system, but it would be worth investigating if a bare/example project that uses DeepState gives this warning when built with -Wmissing-noreturn.

The related code seems to be here: