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POc++ weird segmentation fault
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copied!<pre><code>int Celda :: look(int dni) { bool found = false; int i = 0; int pos = -1; //tam_ sometimes have a strange value, but I only while(i < tam_ && !found){ //touch tam_ in the constructor, is the size of Celda if(dni == bloques_[i]){ found = true; pos = i; } ++i; } return pos; } </code></pre> <p>In main I call a method of another class that calls other that uses the look method I've copied here. In some cases it works, but other times the program stops giving a segmentation fault.</p> <p>When I use a debugger, I've created another variable for store the tam_ value (tam_ is int type), and when I reach that line or the while loop (with condition with tam_) sometimes the segmentation fault appears.</p> <p>The constructor of Celda is:</p> <pre><code>Celda :: Celda(int tamanio) { bloques_ = new int[tamanio]; bloq_ocupados_ = 0; tam_ = tamanio; for(int i = 0 ; i < tam_ ; ++i){ bloques_[i] = 0; } </code></pre> <p>}</p> <pre><code>Tabla :: Tabla(int numcel, int tambloq) { nceldas_ = numcel; tam_bloque_ = tambloq; tabla_ = new Celda*[nceldas_]; for(int i = 0 ; i < nceldas_ ; ++i){ tabla_[i] = new Celda(tam_bloque_); } ocupadas_ = 0; } class Celda { private: int* bloques_; int bloq_ocupados_; int tam_; </code></pre> <p>And down the public section</p> <pre><code>int Tabla :: busq_lineal(int dni) //si pos_dentro acaba valiendo -1, no se encontró { bool encontrado = false; int pos = hash(dni), comparaciones = 0, pos_dentro, pos_fuera; int tamaniotab = nceldas_ * tabla_[0]->gettam(); while(!encontrado && comparaciones < tamaniotab){ pos_dentro = tabla_[pos]->buscar(dni); if(pos_dentro != -1){ //si lo encuentro... encontrado = true; pos_fuera = pos; comparaciones += pos_dentro + 1; }else if(pos < nceldas_ - 1){ //mientras no nos salgamos de la tabla, avanzamos ++pos; comparaciones += tabla_[0]->gettam(); }else { pos = 0; //si nos salimos, volvemos al principio comparaciones += tabla_[0]->gettam(); } } return comparaciones; } </code></pre>

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