Misc #19176: Missing insns_info for iseqs in ruby 3.2 built with debug options

• Status: Open
• Assignee: -

[hurricup (Alexandr Evstigneev)]

I'm not quite sure it is a proper place to ask questions, correct me if I'm wrong.
But I have a problem with ruby-3.2.0 previews. Looks like iseq is missing insns_infos.

It works fine in with pre-3.2 rubies but seems something has changed and I can't figure out - what exactly.

It looks like this:

You may see that body, supposed to be a pointer to iseq_insn_info_entry contains some 0x7 pointing nowhere. And size for insns_info in all iseq I can find with iterating objspace is zero.

[hurricup (Alexandr Evstigneev)]

This happening only if ruby is built with following options: -C --with-valgrind -E CFLAGS='-O0 -g3 -fno-inline -ggdb -DHAVE_DEBUG'
Not sure which one causing this.

[hurricup (Alexandr Evstigneev)]

• Subject changed from How to find insns_info for iseq in ruby 3.2 to How to find insns_info for iseq in ruby 3.2 built with debug options

[hurricup (Alexandr Evstigneev)]

• Subject changed from How to find insns_info for iseq in ruby 3.2 built with debug options to Missing insns_info for iseqs in ruby 3.2 built with debug options