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[PATCH v3 1/4] log: fix memory leak if --graph is passed multiple times

From
Alex Henrie <alexhenrie24@gmail.com>
Date
Feb 11, 2022, 16:36 UTC
Message-ID
<20220211163627.598166-1-alexhenrie24@gmail.com>
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
---
v3: no changes
---
 graph.c    | 12 ++++++++++++
 graph.h    |  5 +++++
 revision.c |  1 +
 3 files changed, 18 insertions(+)
diff --git a/graph.c b/graph.c
index e3828eb8f2..568b6e7cd4 100644
--- a/graph.c
+++ b/graph.c
@@ -401,6 +401,18 @@ struct git_graph *graph_init(struct rev_info *opt)
 	return graph;
 }
 
+void graph_clear(struct git_graph *graph)
+{
+	if (!graph)
+		return;
+
+	free(graph->columns);
+	free(graph->new_columns);
+	free(graph->mapping);
+	free(graph->old_mapping);
+	free(graph);
+}
+
 static void graph_update_state(struct git_graph *graph, enum graph_state s)
 {
 	graph->prev_state = graph->state;
diff --git a/graph.h b/graph.h
index 8313e293c7..e88632a014 100644
--- a/graph.h
+++ b/graph.h
@@ -139,6 +139,11 @@ void graph_set_column_colors(const char **colors, unsigned short colors_max);
  */
 struct git_graph *graph_init(struct rev_info *opt);
 
+/*
+ * Free a struct git_graph.
+ */
+void graph_clear(struct git_graph *graph);
+
 /*
  * Update a git_graph with a new commit.
  * This will cause the graph to begin outputting lines for the new commit
diff --git a/revision.c b/revision.c
index ad4286fbdd..816061f3d9 100644
--- a/revision.c
+++ b/revision.c
@@ -2426,6 +2426,7 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
 	} else if (!strcmp(arg, "--graph")) {
 		revs->topo_order = 1;
 		revs->rewrite_parents = 1;
+		graph_clear(revs->graph);
 		revs->graph = graph_init(revs);
 	} else if (!strcmp(arg, "--encode-email-headers")) {
 		revs->encode_email_headers = 1;
-- 
2.35.1
Next: Alex Henrie
Message 1 of 13 in “log: fix memory leak if --graph is passed multiple times”
  1. 1/4 log: fix memory leak if --graph is passed multiple timesAlex Henrie, Feb 11, 2022
  2. 2/4 log: add a --no-graph optionAlex Henrie, Feb 11, 2022
  3. Junio C HamanoFeb 11, 2022
  4. Alex HenrieFeb 11, 2022
  5. 4/4 gitk: pass --no-graph to `git log`Alex Henrie, Feb 11, 2022
  6. Junio C HamanoFeb 11, 2022
  7. Alex HenrieFeb 11, 2022
  8. Junio C HamanoFeb 11, 2022
  9. Junio C HamanoFeb 11, 2022
  10. Alex HenrieFeb 11, 2022
  11. Alex HenrieFeb 11, 2022
  12. 3/4 log: add a log.graph config optionAlex Henrie, Feb 11, 2022
  13. Junio C HamanoFeb 11, 2022

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