Ruby Issue Tracking System

Today

11:05 AM Ruby Revision 11ce3778 (git): Fix memsize of imemo_ment

sizeof(((rb_method_entry_t *)obj)->def) returned the size of the pointer
(8 bytes) and not the size of the rb_method_entry_t. peterzhu2118 (Peter Zhu)

09/06/2026

11:50 AM Ruby Revision bb1d3236 (git): [DOC] Fix error raised for lchmod

When lchmod isn't available, it raises NotImplementedError. peterzhu2118 (Peter Zhu)

09/04/2026

06:27 AM Ruby Revision eb2dc8cb (git): Make rb_f_require_relative static

peterzhu2118 (Peter Zhu)

09/02/2026

11:38 PM Ruby Revision 59595825 (git): Define IMEMO_MASK from FL_USER bits

peterzhu2118 (Peter Zhu)

11:38 PM Ruby Revision 1d8d84b3 (git): Increase IMEMO_MASK by one bit

We are out of imemo types because IMEMO_MASK uses 4 bits and we have 16
imemo types. This makes it not possible to experiment with new imemo types,
so we can increase it by one bit to have 16 more imemo types. peterzhu2118 (Peter Zhu)

04:00 AM Ruby Revision 90e8610e (git): JIT: Reduce jit_entry_calls/jit_exception_calls to 32 bits

We don't need 64 bits for jit_entry_calls/jit_exception_calls so dropping
them down to 32 bits will allow us to save 8 bytes per iseq. peterzhu2118 (Peter Zhu)

09/01/2026

11:19 AM Ruby Revision 5209ac63 (git): Support embedded lvar_states

If we have 32 local variables or less (which is most iseqs), then we can
embed lvar_states inside the pointer, which removes the need for an
external memory allocation. peterzhu2118 (Peter Zhu)

03:51 AM Ruby Revision d571f80b (git): Stop incrementing the JIT call counter when not compiled

When we run out of JIT memory, we don't compile the iseq, so jit_entry
will be forever NULL. This means that the JIT call counters (jit_entry_calls
and jit_exception_calls) will continue to increase on every call. This
is bad for copy-on... peterzhu2118 (Peter Zhu)

03:51 AM Ruby Revision d039466b (git): Introduce rb_zjit_compiling_p/rb_yjit_compiling_p

peterzhu2118 (Peter Zhu)

08/29/2026

05:17 AM Ruby Revision fcbdc207 (git): Dynamically derive base_label in iseq

base_label isn't used very often in iseq and we can dynamically derive it
from the label (of the current iseq or the local_iseq). We can remove this
field to save 8 bytes. peterzhu2118 (Peter Zhu)