builtin_s2a_sd_opti0_thunk 676 core/builtin.h extern AvmBox builtin_s2a_sd_opti0_thunk(AvmMethodEnv env, uint32_t argc, AvmBox* argv); builtin_s2a_sd_opti0_thunk 677 core/builtin.h #define String_AS3_charAt_thunk builtin_s2a_sd_opti0_thunk