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Prevent creation of node duplicates. (#4233)

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Because list-based graph implementation cannot differentiate nodes by their data,
node duplicates are added, if we don't take care of it.
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Rot127 2024-02-15 07:50:22 +00:00 committed by GitHub
parent 0867fd9d3d
commit 7558233da1
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2 changed files with 11 additions and 4 deletions
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11
librz/core/cgraph.c
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@ -993,12 +993,19 @@ static bool add_edge_to_cfg(RZ_NONNULL RzGraph /*<RzGraphNodeInfo *>*/ *graph,
return false;
}
RzGraphNode *to_node = add_node_info_cfg(graph, op_to, false);
RzGraphNode *to_node = NULL;
bool found = false;
ut64 to_idx = ht_uu_find(nodes_visited, to, &found);
if (found) {
to_node = rz_graph_get_node(graph, to_idx);
} else {
to_node = add_node_info_cfg(graph, op_to, false);
}
if (!to_node) {
RZ_LOG_ERROR("Could not add node at 0x%" PFMT64x "\n", to);
return false;
}
ut64 to_idx = to_node->idx;
to_idx = to_node->idx;
if (from == to) {
from_idx = to_idx;
}

4
test/integration/test_analysis_graph.c
View file

@ -261,7 +261,7 @@ bool test_analysis_graph_cfg() {
RzGraph *g = rz_core_graph_cfg(core, 0x117a); // main()
mu_assert_notnull(g, "Graph was NULL");
mu_assert_eq(g->n_nodes, 26, "data graph node count");
mu_assert_eq(g->n_nodes, 24, "data graph node count");
mu_assert_eq(g->n_edges, 25, "data graph edge count");
// Testing the node content is a little annoying. The nodes
@ -291,7 +291,7 @@ bool test_analysis_graph_cfg() {
mu_assert_eq(info->cfg.address, 0x11a7, "info address");
mu_assert_eq(info->cfg.call_address, UT64_MAX, "info call address");
info = rz_graph_get_node_info_data(rz_graph_get_node(g, 24)->data);
info = rz_graph_get_node_info_data(rz_graph_get_node(g, 23)->data);
mu_assert_eq(info->type, RZ_GRAPH_NODE_TYPE_CFG, "info type");
mu_assert_eq(info->subtype, RZ_GRAPH_NODE_SUBTYPE_CFG_CALL, "info subtype");
mu_assert_eq(info->cfg.address, 0x11cd, "info address");