g++ segfaults

[fafner]

Ok, I'm experiencing something really weird here.

I'm trying my hands on this ai-tutorial: http://www.ai-programming.com/bot_tutorial.htm/#intro

I've defined a class called Bot that constitutes the actual AI, and a class called FBot which handles Qt interface stuff. This is the Bot.h file:

#ifndef __BOT__
#define __BOT__

#include <QtGui>

typedef struct {
	QString input;
	QString output;
} knowledge_bit;

class Bot {
	public:
		Bot(QString n);
		~Bot(void);

		QString getReply(QString input);

	private:
		QString name;
		knowledge_bit knowledge[2];
};

#endif 

The knowledge array is being initialized in the Bot constructor like this:
knowledge = {{"Hello", "Hi!"}, {"How are you?", "I'm good, thanks!"}}; (I know, very crude and silly:p)

I've tried various ways of initializing the knowledge array, like outside the class, and in the definition, but none of them have worked. I've also tried making it a pointer instead of an array, to no avail. I'm trying to compile this like it is now, with the length of the array set to 2, and g++ itself segfaults! This the message I got:

Bot.cpp: In constructor ‘Bot::Bot(QString)’:
Bot.cpp:11: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.4/README.Bugs> for instructions.

Obviously it is concerning the initialization of the array, but now I've tried everything I can think of. Does anyone know how I can initialize this array? And how did this cause g++ to segfault?

Peace,
Fafner

[bigearsbilly]

you are using QString not std:string as in the example

obviously it will not initialise in this manner.
your initialiser is all wrong, too many curly brackets anyway.

try like in the example?

        std::string Response[] = {
                "I HEARD YOU!",
                "SO, YOU ARE TALKING TO ME.",
                "CONTINUE, I¿M LISTENING.",
                "VERY INTERESTING CONVERSATION.",
                "TELL ME MORE..."
        };

[fafner]

Ok, I thought QString would initialize the same way. Anyhow, changing it to std::string still produced the same error, so I'm guessing that is actually the case. I'm not using the first, but the second part in the example, so the std::string array isn't part of it anymore. My initializer is exactly the same as in the code in the example, and I can't see how it has too many curly brackets?

[guestgulkan]

Initialisation of class array members is always an issue.
They cannot be initialised in the initialisation list or in the body of the constructor using the usual
array_name = { } style.

If you want other than the default initialisation you wil have to write a loop or something - but NOT the way you
are trying to do.