commit beedadbeacc00222e1bdebec638c1e8cd48a8b14 Author: Nick Mathewson nickm@torproject.org Date: Tue Mar 12 19:25:31 2019 -0400
Try a different approach to making publish function seem used.
We want the DISPATCH_ADD_PUB() macro to count as making a DECLARE_PUBLISH() invocation "used", so let's try a new approach that preserves that idea. The old one apparently did not work for some versions of osx clang. --- src/lib/pubsub/pubsub_macros.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/src/lib/pubsub/pubsub_macros.h b/src/lib/pubsub/pubsub_macros.h index e4fdd15ae..12cfa7d39 100644 --- a/src/lib/pubsub/pubsub_macros.h +++ b/src/lib/pubsub/pubsub_macros.h @@ -268,12 +268,20 @@ } \ EAT_SEMICOLON
+/** + * Add a fake use of the publish function for 'messagename', so that + * the compiler does not call it unused. + */ +#define DISPATCH__FAKE_USE_OF_PUBFN_(messagename) \ + ( 0 ? (publish_fn__ ##messagename((msg_arg_type__##messagename)0), 1) \ + : 1) + /* * This macro is for internal use. It backs DISPATCH_ADD_PUB*() */ #define DISPATCH_ADD_PUB_(connector, channel, messagename, flags) \ ( \ - ((void)publish_fn__ ##messagename), \ + DISPATCH__FAKE_USE_OF_PUBFN_(messagename), \ pubsub_add_pub_((connector), \ &pub_binding__ ##messagename, \ get_channel_id(# channel), \