Thread (5 messages) flat view 5 messages, 3 authors, 2016-06-15

Re: [RFC memory leak?] Minor memory leak fix

From: Duy Nguyen <hidden>
Date: 2016-06-15 23:00:16

On Tue, Mar 11, 2014 at 5:45 PM, Fredrik Gustafsson [off-list ref] wrote:
Strbuf needs to be released even if it's locally declared.
"path" is declared static. So yes it's a leak but the leak is minimum.
Your patch would make more sense if "static" is gone and it's leaked
after every write_archive_entry call.
quoted hunk ↗ jump to hunk
Signed-off-by: Fredrik Gustafsson <redacted>
---
 archive.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/archive.c b/archive.c
index 346f3b2..d6d56e6 100644
--- a/archive.c
+++ b/archive.c
@@ -113,6 +113,7 @@ static int write_archive_entry(const unsigned char *sha1, const char *base,
        struct git_attr_check check[2];
        const char *path_without_prefix;
        int err;
+       int to_ret = 0;

        args->convert = 0;
        strbuf_reset(&path);
@@ -126,8 +127,10 @@ static int write_archive_entry(const unsigned char *sha1, const char *base,

        setup_archive_check(check);
        if (!git_check_attr(path_without_prefix, ARRAY_SIZE(check), check)) {
-               if (ATTR_TRUE(check[0].value))
-                       return 0;
+               if (ATTR_TRUE(check[0].value)) {
+                       to_ret = 0;
+                       goto cleanup;
+               }
to_ret is already 0 so I think "goto cleanup;" is enough.
quoted hunk ↗ jump to hunk
                args->convert = ATTR_TRUE(check[1].value);
        }
@@ -135,14 +138,20 @@ static int write_archive_entry(const unsigned char *sha1, const char *base,
                if (args->verbose)
                        fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
                err = write_entry(args, sha1, path.buf, path.len, mode);
-               if (err)
-                       return err;
-               return (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0);
+               if (err) {
+                       to_ret = err;
+                       goto cleanup;
+               }
+               to_ret = (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0);
+               goto cleanup;
Maybe if (err) to_ret = ...; else to_ret = ...; so we only need one
"goto cleanup" statement. Going even further:

to_ret = write_entry(...);
if (!to_ret) to_ret = (S_ISDIR(...));
goto cleanup;
        }

        if (args->verbose)
                fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
-       return write_entry(args, sha1, path.buf, path.len, mode);
+       to_ret = write_entry(args, sha1, path.buf, path.len, mode);
+cleanup:
+       strbuf_release(&path);
+       return to_ret;
 }

 int write_archive_entries(struct archiver_args *args,
--
1.8.3.1.490.g39d9b24.dirty

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-- 
Duy
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