7.78 --guiding_decls, --no_guiding_decls
Enables and disables the recognition of guiding declarations for template functions in C++.
A guiding declaration is a function declaration that
matches an instance of a function template but has no explicit definition because its
definition derives from the function template.
--no_guiding_decls is combined with
--old_specializations, a specialization of a nonmember template function
is not recognized. It is treated as a definition of an independent function.
--guiding_decls is provided only as a migration aid for
legacy source code that does not conform to the C++ standard. ARM does not recommend its
This option is effective only if the source language is C++.
The default is
template <class T> void f(T)
When regarded as a guiding declaration,
f(int) is an instance of the
template. Otherwise, it is an independent function so you must supply a