RFA: Fix plugins/44459 1/2

[Richard Guenther]

On Tue, Jun 8, 2010 at 2:36 PM, Joern Rennecke <amylaar@spamcop.net> wrote:
> I have divided the patch set for this PR into two parts to allow separate
> review:
> This one, the first part, changes only gcc-plugin.h ; the purpose of this
> file is quite obviously to provide a part of the plugin interface.
>
> Bootstrapped and regression tested in 160389 with --enable-build-with-cxx
>
> This patch by itself allows testsuite/gcc.dg/plugin/one_time_plugin.c to
> be compiled with gcc into a functioning gcc plugin.
>
> I would consider this patch alone a possible fix for PR 44459, although I'd
> prefer to have more functionality supported, as would be available by
> combining
> both parts of this patch set, or this part with a modified second part.

Ok.

Thanks,
Richard.

>
> 2010-06-08  Joern Rennecke  <joern.rennecke@embecosm.com>
>
>        PR plugins/44459:
>        * gcc-plugin.h: Encapsulate all declarations in extern "C".
>
> Index: gcc-plugin.h
> ===================================================================
> --- gcc-plugin.h        (revision 160389)
> +++ gcc-plugin.h        (working copy)
> @@ -38,6 +38,12 @@ enum plugin_event
>   PLUGIN_EVENT_FIRST_DYNAMIC
>  };
>
> +/* All globals declared here have C linkage to reduce link compatibility
> +   issues with implementation language choice and mangling.  */
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
>  extern const char **plugin_event_name;
>
>  struct plugin_argument
> @@ -96,16 +102,10 @@ extern bool plugin_default_version_check
>  typedef int (*plugin_init_func) (struct plugin_name_args *plugin_info,
>                                  struct plugin_gcc_version *version);
>
> -#ifdef __cplusplus
> -extern "C" {
> -#endif
>  /* Declaration for "plugin_init" function so that it doesn't need to be
>    duplicated in every plugin.  */
>  extern int plugin_init (struct plugin_name_args *plugin_info,
>                         struct plugin_gcc_version *version);
> -#ifdef __cplusplus
> -}
> -#endif
>
>  /* Function type for a plugin callback routine.
>
> @@ -147,4 +147,8 @@ extern int unregister_callback (const ch
>    -iplugindir program argument to cc1.  */
>  extern const char* default_plugin_dir_name (void);
>
> +#ifdef __cplusplus
> +}
> +#endif
> +
>  #endif /* GCC_PLUGIN_H */
>
>