The C++ plugin defaults to version 0 of the base compiler API. However, this is a mistake -- version 1 was introduced before the C++ API was even implemented. This switches the default to version 1. Note that the compiler-side plugin will accept this version, so it should remain compatible.
libcc1/ChangeLog 2021-04-27 Tom Tromey <t...@tromey.com> * libcp1.cc (vtable): Use GCC_FE_VERSION_1. --- libcc1/ChangeLog | 4 ++++ libcc1/libcp1.cc | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/libcc1/libcp1.cc b/libcc1/libcp1.cc index 6fb9fb4c9a6c..65e9770205c0 100644 --- a/libcc1/libcp1.cc +++ b/libcc1/libcp1.cc @@ -391,7 +391,7 @@ libcp1_destroy (struct gcc_base_context *s) static const struct gcc_base_vtable vtable = { - GCC_FE_VERSION_0, + GCC_FE_VERSION_1, libcp1_set_arguments_v0, libcp1_set_source_file, libcp1_set_print_callback, -- 2.26.2