Revert "Check for nonnull attribute in configure"

This reverts commit 54eb51d72bc43f90b595f0d7ffb5069ebf1a56d9.

Windows build failure. See also https://github.com/ruby/ruby/runs/278718805

1 files changed, 4 insertions, 4 deletions

diff --git a/internal.h b/internal.h
index 5b9b9b62bc..c296a99b6e 100644
--- a/internal.h
+++ b/internal.h
@@ -2387,16 +2387,16 @@ struct rb_call_data {
     struct rb_call_cache cc;
     struct rb_call_info ci;
 };
-RUBY_FUNC_EXPORTED
-RUBY_FUNC_NONNULL(1, VALUE rb_funcallv_with_cc(struct rb_call_data*, VALUE, ID, int, const VALUE*));
-
-#ifdef __GNUC__
+VALUE rb_funcallv_with_cc(struct rb_call_data*, VALUE, ID, int, const VALUE*)
+#if (defined(__clang__) || GCC_VERSION_SINCE(3, 3, 0)) && defined(__OPTIMIZE__)
+__attribute__((__visibility__("default"), __nonnull__(1)))
 # define rb_funcallv(recv, mid, argc, argv) \
     __extension__({ \
         static struct rb_call_data rb_funcallv_data = { { 0, }, { 0, }, }; \
         rb_funcallv_with_cc(&rb_funcallv_data, recv, mid, argc, argv); \
     })
 #endif
+    ;
 
 /* miniprelude.c, prelude.c */
 void Init_prelude(void);