https://git.ruby-lang.org/ruby.git/commit/?id=cda5745c1b

From cda5745c1bacdb3be8384d21ee0dd70a9d95af5b Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@g...>
Date: Sun, 1 Sep 2019 16:31:09 +0900
Subject: Automatically detect missing symbols

which are usually optimized away by -O3.

This CI can detect missing exports like
ea84a680755b5a7fa700618cbe78e3b2fc7be01d which was needed for
761346a9604ca2c79777d1d67fb5dcc3c30dbf69.

diff --git a/.travis.yml b/.travis.yml
index 6a90720..b7f1add 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -143,6 +143,8 @@ env: https://github.com/ruby/ruby/blob/trunk/.travis.yml#L143
     name: x86_64-linux
     os: linux
     <<: *gcc-8
+    env:
+      - TEST_MJIT_SYMBOLS=1 # detect exports missing for MJIT
 
   - &jemalloc
     name: --with-jemalloc
diff --git a/test/lib/jit_support.rb b/test/lib/jit_support.rb
index c1624cc..acda166 100644
--- a/test/lib/jit_support.rb
+++ b/test/lib/jit_support.rb
@@ -29,6 +29,7 @@ module JITSupport https://github.com/ruby/ruby/blob/trunk/test/lib/jit_support.rb#L29
     ]
     args << '--jit-wait' if wait
     args << '--jit-save-temps' if save_temps
+    args << '--jit-debug' if ENV['TEST_MJIT_SYMBOLS'] == '1'
     args << '-e' << script
     base_env = { 'MJIT_SEARCH_BUILD_DIR' => 'true' } # workaround to skip requiring `make install` for `make test-all`
     if preloadenv = RbConfig::CONFIG['PRELOADENV'] and !preloadenv.empty?
-- 
cgit v0.10.2


--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/