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PR libcc1/113977 points out a case where a simple expression is rejected with a compiler error message. The bug here is that gdb does not inform the plugin of the correct alignment -- in fact, there is no way to do that. This patch adds a new method to allow the alignment to be set, and bumps the C front end protocol version. It also includes some updates to various comments in 'include', done here to simplify the merge to binutils-gdb. include * gcc-cp-interface.h (gcc_cp_fe_context_function): Update comment. * gcc-c-interface.h (enum gcc_c_api_version) <GCC_C_FE_VERSION_2>: New constant. (gcc_c_fe_context_function): Update comment. * gcc-c-fe.def (finish_record_with_alignment): New method. Update documentation. libcc1 PR libcc1/113977 * libcc1plugin.cc (plugin_finish_record_or_union): New function. (plugin_finish_record_or_union): Rewrite. (plugin_init): Use GCC_C_FE_VERSION_2. * libcc1.cc (c_vtable): Use GCC_C_FE_VERSION_2. (gcc_c_fe_context): Check for GCC_C_FE_VERSION_2.
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