builtin/log: fix leak when showing converted blob contents

In `show_blob_object()`, we proactively call `textconv_object()`. In
case we have a textconv driver for this blob we will end up showing the
converted contents, otherwise we'll show the un-converted contents of it
instead.

When the object has been converted we never free the buffer containing
the converted contents. Fix this to plug this memory leak.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/log.c b/builtin/log.c
index f5cb00c..36769ba 100644 (file)
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -707,6 +707,7 @@ static int show_blob_object(const struct object_id *oid, struct rev_info *rev, c
 
        write_or_die(1, buf, size);
        object_context_release(&obj_context);
+       free(buf);
        return 0;
 }
 

diff --git a/t/t4030-diff-textconv.sh b/t/t4030-diff-textconv.sh
index a39a626..29f6d61 100755 (executable)
--- a/t/t4030-diff-textconv.sh
+++ b/t/t4030-diff-textconv.sh
@@ -1,6 +1,8 @@
 #!/bin/sh
 
 test_description='diff.*.textconv tests'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 find_diff() {