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config: clarify memory ownership in git_config_string()

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The out parameter of `git_config_string()` is a `const char **` even
though we transfer ownership of memory to the caller. This is quite
misleading and has led to many memory leaks all over the place. Adapt
the parameter to instead be `char **`.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
2024-05-27 13:46:39 +02:00
committed by Junio C Hamano
parent 83024d98f7
commit 1b261c20ed
30 changed files with 96 additions and 92 deletions
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6
config.c
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@ -1338,7 +1338,7 @@ int git_config_bool(const char *name, const char *value)
return v;
}
int git_config_string(const char **dest, const char *var, const char *value)
int git_config_string(char **dest, const char *var, const char *value)
{
if (!value)
return config_error_nonbool(var);
@ -1566,7 +1566,7 @@ static int git_default_core_config(const char *var, const char *value,
if (!strcmp(var, "core.checkroundtripencoding")) {
FREE_AND_NULL(check_roundtrip_encoding);
return git_config_string((const char **) &check_roundtrip_encoding, var, value);
return git_config_string(&check_roundtrip_encoding, var, value);
}
if (!strcmp(var, "core.notesref")) {
@ -2418,7 +2418,7 @@ int git_configset_get_string(struct config_set *set, const char *key, char **des
{
const char *value;
if (!git_configset_get_value(set, key, &value, NULL))
return git_config_string((const char **)dest, key, value);
return git_config_string(dest, key, value);
else
return 1;
}