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int Add_Edge_To_Vertex(int vertexFromId,int vertexToId){
vertex vertexTo=vertices[vertexToId];
if(vertexTo.edgesInArrLength == vertexTo.numOfEdgesIn){ //multiply this vertex arr of edges if needed
vertices[vertexToId].edgesInArrLength = (vertices[vertexToId].edgesInArrLength)*2;
tmpVertexEdges = (edge*)realloc((vertices[vertexToId].edges),(vertices[vertexToId].edgesInArrLength)*sizeof(edge));
if(tmpVertexEdges != NULL) {
vertices[vertexToId].edges = tmpVertexEdges;
}
else
{
free(tmpVertexEdges);
return 0;
}
}
}
typedef struct vertex
{
char* name; //not unique
int id; //unique
edge* edges; //array edges
int outDegree;
int edgesInArrLength;
int numOfEdgesIn;
double rank;
}vertex;
這是我的初始化vertex-擴大使用數組(幾次)realloc的 - 崩潰
vertex res={(char *)malloc(strlen(name)*sizeof(char)),verticesCount,(edge*)calloc(1, sizeof(edge)),0,1,0,1};
邊緣時,這是struct-
typedef struct edge
{
int fromVertexId;
int toVertexId;
double weight;
}edge;
當我嘗試雙精度up vertex.edges數組(第3-12行),程序在realloc部分崩潰,並顯示此錯誤消息 - * glibc detected /home/fro IKE/workspaceC /網頁排名/調試/網頁排名:malloc()函數:內存破壞:0x00000000009711d0 * *
這是C還是C++? – 2013-03-26 08:51:38
如果這是C++,爲什麼不使用'std :: vector's?如果它是C,你爲什麼要拋出'realloc'的返回? – Mat 2013-03-26 08:54:06
您可能會在其他地方覆蓋'edges',並在_realloc_時出現分段錯誤。 – Rohan 2013-03-26 08:55:28