https://git.ruby-lang.org/ruby.git/commit/?id=1851dc269c

From 1851dc269cb7a957fcb1fe2e97b7b76c2a52d096 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@r...>
Date: Fri, 6 Sep 2019 16:50:57 +0900
Subject: avoid name mangling

Otherwise the dynamic linker cannot find this function.
See also https://ci.appveyor.com/project/ruby/ruby/builds/27224231/job/4pg6lxlsnsjotu2l

diff --git a/ext/-test-/cxxanyargs/cxxanyargs.cpp b/ext/-test-/cxxanyargs/cxxanyargs.cpp
index 28d99b9..51be7ca 100644
--- a/ext/-test-/cxxanyargs/cxxanyargs.cpp
+++ b/ext/-test-/cxxanyargs/cxxanyargs.cpp
@@ -335,7 +335,7 @@ namespace test_rb_ivar_foreach { https://github.com/ruby/ruby/blob/trunk/ext/-test-/cxxanyargs/cxxanyargs.cpp#L335
     }
 }
 
-void
+extern "C" void
 Init_cxxanyargs(void)
 {
     VALUE b = rb_define_module("Bug");
-- 
cgit v0.10.2


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