Try -O0

byroot · byroot · commit 92bb8a87f89e · 2023-03-01T11:44:21.000+01:00
diff --git a/ext/msgpack/extconf.rb b/ext/msgpack/extconf.rb
@@ -6,7 +6,7 @@
 have_func("rb_hash_new_capa", "ruby.h") # Ruby 3.2+
 
 unless RUBY_PLATFORM.include? 'mswin'
-  $CFLAGS << %[ -I.. -Wall -O3 #{RbConfig::CONFIG["debugflags"]} -std=gnu99]
+  $CFLAGS << %[ -I.. -Wall -O0 -g #{RbConfig::CONFIG["debugflags"]} -std=gnu99]
 end
 
 if RUBY_VERSION.start_with?('3.0.')
