Dump a backtrace with gdb

Because Ruby often fails to dump a C backtrace.

2 files changed, 2 insertions, 0 deletions

diff --git a/bootstraptest/runner.rb b/bootstraptest/runner.rb
index bda02355bd..fbf2572ffb 100755
--- a/bootstraptest/runner.rb
+++ b/bootstraptest/runner.rb
@@ -530,6 +530,7 @@ def cleanup_coredump
     core_path = "/tmp/bootstraptest-core.#{Time.now.utc.iso8601}"
     warn "A core file is found. Saving it at: #{core_path.dump}"
     FileUtils.mv('core', core_path)
+    system('gdb', RbConfig.ruby, '-c', core_path, '-ex', 'bt', '-batch')
   end
   FileUtils.rm_f Dir.glob('core.*')
   FileUtils.rm_f @ruby+'.stackdump' if @ruby
diff --git a/tool/lib/test/unit.rb b/tool/lib/test/unit.rb
index 888905b36c..b292f25280 100644
--- a/tool/lib/test/unit.rb
+++ b/tool/lib/test/unit.rb
@@ -357,6 +357,7 @@ module Test
           core_path = "/tmp/test-unit-core.#{Time.now.utc.iso8601}"
           warn "A core file is found. Saving it at: #{core_path.dump}"
           FileUtils.mv('core', core_path)
+          system('gdb', RbConfig.ruby, '-c', core_path, '-ex', 'bt', '-batch')
         end
         STDERR.flush
         exit c