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fix: memory leak at msc_tree #3428

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fix: memory leak at msc_tree #3428

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9 changes: 7 additions & 2 deletions src/utils/msc_tree.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -407,8 +407,10 @@ TreeNode *CPTAddElement(unsigned char *ipdata, unsigned int ip_bitmask, CPTTree
CPTData *prefix_data = CPTCreateCPTData(netmask);
CPTAppendToCPTDataList(prefix_data, &prefix->prefix_data);

if(CheckBitmask(netmask, ip_bitmask))
if(CheckBitmask(netmask, ip_bitmask)) {
free(prefix);
return node;
}

parent = node->parent;
while (parent != NULL && netmask < (parent->bit + 1)) {
Expand All @@ -423,6 +425,7 @@ TreeNode *CPTAddElement(unsigned char *ipdata, unsigned int ip_bitmask, CPTTree

if ((node->count -1) == 0) {
node->netmasks[0] = netmask;
free(prefix);
return new_node;
}

Expand All @@ -449,8 +452,10 @@ TreeNode *CPTAddElement(unsigned char *ipdata, unsigned int ip_bitmask, CPTTree

new_node = CPTCreateNode();

if(new_node == NULL)
if(new_node == NULL) {
free(prefix);
return NULL;
}

new_node->prefix = prefix;
new_node->bit = prefix->bitlen;
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