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Mark ACTION_Pn()-generated functions as must-use-result.

This catches when a client creates an action and discards it, thinking that the action has actually been applied to something.

This will help people who make the mistake of defining, for example, both `void Use(Foo*)` and `ACTION(Use) { Use(arg); }` for later application to a Foo.  With such an overload, a client may then write `Use();`, forgetting the param and being confused why nothing happens.

This also catches when a client defines their own action in terms of an ACTION()-generated one, invokes the ACTION's builder, and then fails to invoke the resulting action, thinking it's operating on the outer action's parameters.

PiperOrigin-RevId: 312108101
This commit is contained in:
Abseil Team 2020-05-18 13:36:30 -04:00 committed by Derek Mauro
parent 63713e1ce4
commit 1397db9e58
3 changed files with 15 additions and 2 deletions
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1
googlemock/include/gmock/gmock-actions.h
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@ -1512,6 +1512,7 @@ auto InvokeArgumentAdl(AdlTag, F f, Args... args) -> decltype(f(args...)) {
return_type gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_) const; \
}; \
}; \
inline name##Action name() GTEST_MUST_USE_RESULT_; \
inline name##Action name() { return name##Action(); } \
template <typename F> \
template <GMOCK_ACTION_TEMPLATE_ARGS_NAMES_> \

8
googlemock/include/gmock/gmock-generated-actions.h
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@ -442,7 +442,13 @@
}\
GMOCK_INTERNAL_DEFN_##value_params\
};\
template <GMOCK_INTERNAL_DECL_##template_params\
template <GMOCK_INTERNAL_DECL_##template_params \
GMOCK_INTERNAL_DECL_TYPE_##value_params>\
GMOCK_ACTION_CLASS_(name, value_params)<\
GMOCK_INTERNAL_LIST_##template_params\
GMOCK_INTERNAL_LIST_TYPE_##value_params> name(\
GMOCK_INTERNAL_DECL_##value_params) GTEST_MUST_USE_RESULT_;\
template <GMOCK_INTERNAL_DECL_##template_params \
GMOCK_INTERNAL_DECL_TYPE_##value_params>\
inline GMOCK_ACTION_CLASS_(name, value_params)<\
GMOCK_INTERNAL_LIST_##template_params\

8
googlemock/include/gmock/gmock-generated-actions.h.pump
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@ -260,7 +260,13 @@ $range k 0..n-1
}\
GMOCK_INTERNAL_DEFN_##value_params\
};\
template <GMOCK_INTERNAL_DECL_##template_params\
template <GMOCK_INTERNAL_DECL_##template_params \
GMOCK_INTERNAL_DECL_TYPE_##value_params>\
GMOCK_ACTION_CLASS_(name, value_params)<\
GMOCK_INTERNAL_LIST_##template_params\
GMOCK_INTERNAL_LIST_TYPE_##value_params> name(\
GMOCK_INTERNAL_DECL_##value_params) GTEST_MUST_USE_RESULT_;\
template <GMOCK_INTERNAL_DECL_##template_params \
GMOCK_INTERNAL_DECL_TYPE_##value_params>\
inline GMOCK_ACTION_CLASS_(name, value_params)<\
GMOCK_INTERNAL_LIST_##template_params\