Am 18.07.2014 21:10, schrieb Junio C Hamano:
> René Scharfe <l.s.r@xxxxxx> writes:
>
>> Use the existing argv_array member instead of providing our own. This
>> way we don't have to initialize or clean it up explicitly.
>>
>> Signed-off-by: Rene Scharfe <l.s.r@xxxxxx>
>> ---
>
> The change below looks so trivial and I cannot offhand see why it
> would break t9020 in a reproducible way.
>
> Puzzled...
>
>> remote-testsvn.c | 11 ++++-------
>> 1 file changed, 4 insertions(+), 7 deletions(-)
>>
>> diff --git a/remote-testsvn.c b/remote-testsvn.c
>> index 6be55cb..31415bd 100644
>> --- a/remote-testsvn.c
>> +++ b/remote-testsvn.c
>> @@ -175,7 +175,6 @@ static int cmd_import(const char *line)
>> char *note_msg;
>> unsigned char head_sha1[20];
>> unsigned int startrev;
>> - struct argv_array svndump_argv = ARGV_ARRAY_INIT;
>> struct child_process svndump_proc;
>>
>> if (read_ref(private_ref, head_sha1))
>> @@ -202,11 +201,10 @@ static int cmd_import(const char *line)
>> } else {
>> memset(&svndump_proc, 0, sizeof(struct child_process));
>> svndump_proc.out = -1;
>> - argv_array_push(&svndump_argv, "svnrdump");
>> - argv_array_push(&svndump_argv, "dump");
>> - argv_array_push(&svndump_argv, url);
>> - argv_array_pushf(&svndump_argv, "-r%u:HEAD", startrev);
>> - svndump_proc.argv = svndump_argv.argv;
>> + argv_array_push(&svndump_proc.args, "svnrdump");
>> + argv_array_push(&svndump_proc.args, "dump");
>> + argv_array_push(&svndump_proc.args, url);
>> + argv_array_pushf(&svndump_proc.args, "-r%u:HEAD", startrev);
>>
>> code = start_command(&svndump_proc);
>> if (code)
>> @@ -227,7 +225,6 @@ static int cmd_import(const char *line)
>> code = finish_command(&svndump_proc);
>> if (code)
>> warning("%s, returned %d", svndump_proc.argv[0], code);
>> - argv_array_clear(&svndump_argv);
Unfortunately I don't get a test failure, but I think I see what's
wrong: The warning line above references the argv array after it was
freed by finish_command. Ouch. Fixup below:
---
remote-testsvn.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/remote-testsvn.c b/remote-testsvn.c
index 31415bd..e3ad11b 100644
--- a/remote-testsvn.c
+++ b/remote-testsvn.c
@@ -176,6 +176,7 @@ static int cmd_import(const char *line)
unsigned char head_sha1[20];
unsigned int startrev;
struct child_process svndump_proc;
+ const char *command;
if (read_ref(private_ref, head_sha1))
startrev = 0;
@@ -199,16 +200,17 @@ static int cmd_import(const char *line)
if(dumpin_fd < 0)
die_errno("Couldn't open svn dump file %s.", url);
} else {
+ command = "svnrdump";
memset(&svndump_proc, 0, sizeof(struct child_process));
svndump_proc.out = -1;
- argv_array_push(&svndump_proc.args, "svnrdump");
+ argv_array_push(&svndump_proc.args, command);
argv_array_push(&svndump_proc.args, "dump");
argv_array_push(&svndump_proc.args, url);
argv_array_pushf(&svndump_proc.args, "-r%u:HEAD", startrev);
code = start_command(&svndump_proc);
if (code)
- die("Unable to start %s, code %d", svndump_proc.argv[0], code);
+ die("Unable to start %s, code %d", command, code);
dumpin_fd = svndump_proc.out;
}
/* setup marks file import/export */
@@ -224,7 +226,7 @@ static int cmd_import(const char *line)
if (!dump_from_file) {
code = finish_command(&svndump_proc);
if (code)
- warning("%s, returned %d", svndump_proc.argv[0], code);
+ warning("%s, returned %d", command, code);
}
return 0;
--
2.0.2
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