loadCString(ptr) {
	        if (this.buffer != this.memory.buffer) {
	            this.updateViews();
	        }
	        // NOTE: the views are still valid for read.
	        const ret = [];
	        let ch = 1;
	        while (ch != 0) {
	            ch = this.viewU8[ptr];
	            if (ch != 0) {
	                ret.push(String.fromCharCode(ch));
	            }
	            ++ptr;
	        }
	        return ret.join("");
	    }
Load null-terminated C-string from ptr.
@param ptr The head address