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builtin/commit-graph.c: UNLEAK variables

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`graph_verify()`, `graph_read()` and `graph_write()` do the hard work of
`cmd_commit_graph()`. As soon as these return, so does
`cmd_commit_graph()`.

`strbuf_getline()` may allocate memory in the strbuf, yet return EOF.
We need to release the strbuf or UNLEAK it. Go for the latter since we
are close to returning from `graph_write()`.

`graph_write()` also fails to free the strings in the string list. They
have been added to the list with `strdup_strings` set to 0. We could
flip `strdup_strings` before clearing the list, which is our usual hack
in situations like this. But since we are about to exit, let's just
UNLEAK the whole string list instead.

UNLEAK `graph` in `graph_verify`. While at it, and for consistency,
UNLEAK in `graph_read()` as well, and remove an unnecessary UNLEAK just
before dying.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Martin Ågren 2018-10-03 10:12:17 -07:00 committed by Junio C Hamano
parent f4dbdfc4d5
commit 0bfb48e672
1 changed files with 6 additions and 5 deletions
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11
builtin/commit-graph.c
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@ -64,6 +64,7 @@ static int graph_verify(int argc, const char **argv)
if (!graph)
return 0;
UNLEAK(graph);
return verify_commit_graph(the_repository, graph);
}
@ -89,10 +90,8 @@ static int graph_read(int argc, const char **argv)
graph_name = get_commit_graph_filename(opts.obj_dir);
graph = load_commit_graph_one(graph_name);
if (!graph) {
UNLEAK(graph_name);
if (!graph)
die("graph file %s does not exist", graph_name);
}
FREE_AND_NULL(graph_name);
@ -115,7 +114,7 @@ static int graph_read(int argc, const char **argv)
printf(" large_edges");
printf("\n");
free_commit_graph(graph);
UNLEAK(graph);
return 0;
}
@ -166,6 +165,8 @@ static int graph_write(int argc, const char **argv)
pack_indexes = &lines;
if (opts.stdin_commits)
commit_hex = &lines;
UNLEAK(buf);
}
write_commit_graph(opts.obj_dir,
@ -174,7 +175,7 @@ static int graph_write(int argc, const char **argv)
opts.append,
1);
string_list_clear(&lines, 0);
UNLEAK(lines);
return 0;
}