Files
binutils-gdb/gdbsupport
Pedro Alves 377c3a9c91 Introduce gdb::make_function_view
This adds gdb::make_function_view, which lets you create a function
view from a callable without specifying the function_view's template
parameter.  For example, this:

    auto lambda = [&] (int) { ... };
    auto fv = gdb::make_function_view (lambda);

instead of:

    auto lambda = [&] (int) { ... };
    gdb::function_view<void (int)> fv = lambda;

It is particularly useful if you have a template function with an
optional function_view parameter, whose type depends on the function's
template parameters.  Like:

    template<typename T>
    void my_function (T v, gdb::function_view<void(T)> callback = nullptr);

For such a function, the type of the callback argument you pass must
already be a function_view.  I.e., this wouldn't compile:

    auto lambda = [&] (int) { ... };
    my_function (1, lambda);

With gdb::make_function_view, you can write the call like so:

    auto lambda = [&] (int) { ... };
    my_function (1, gdb::make_function_view (lambda));

Unit tests included.

Tested by building with GCC 9.4, Clang 10, and GCC 4.8.5, on x86_64
GNU/Linux, and running the unit tests.

Change-Id: I5c4b3b4455ed6f0d8878cf1be189bea3ee63f626
2022-08-05 16:12:56 +02:00
..
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This is a helper library that is used by gdb and gdbserver.

To send patches, follow the gdb patch submission instructions in
../gdb/CONTRIBUTE.  For maintainers, see ../gdb/MAINTAINERS.