Avoid implicit signed-to-unsigned conversion when calculating frame field offset at runtime. Closes #2729.
Avoid implicit signed-to-unsigned conversion when calculating frame field offset at runtime.
Closes #2729.

da-woods/cython,da-woods/cython,scoder/cython,cython/cython,scoder/cython,da-woods/cython,scoder/cython,da-woods/cython,scoder/cython,cython/cython,cython/cython,cython/cython