Function jit_str_cat

src/builtin/module_jit.cpp:454–469

    }

    DAS_API char * jit_str_cat ( const char * sA, const char * sB, Context * context, LineInfoArg * at ) {
        sA = sA ? sA : "";
        sB = sB ? sB : "";
        auto la = stringLength(*context, sA);
        auto lb = stringLength(*context, sB);
        uint32_t commonLength = la + lb;
        if ( !commonLength ) {
            return nullptr;
        } else {
            char * sAB = (char * ) context->allocateString(nullptr, commonLength, at);
            memcpy ( sAB, sA, la );
            memcpy ( sAB+la, sB, lb+1 );
            context->stringHeap->recognize(sAB);
            return sAB;
        }
    }

    struct JitStackState {
        char * EP;