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authorJeff King <peff@peff.net>2020-04-10 22:44:28 +0300
committerJunio C Hamano <gitster@pobox.com>2020-04-11 00:44:29 +0300
commitf5914f4b6bcdb517733c761fe5ba9d94471eb01d (patch)
tree12b2a92eecd00075ad0bc04100ebb22d2a0f9e5b /submodule-config.c
parent021ba32a7bca954235e31338c4f27b221a1807de (diff)
parse_config_key(): return subsection len as size_t
We return the length to a subset of a string using an "int *" out-parameter. This is fine most of the time, as we'd expect config keys to be relatively short, but it could behave oddly if we had a gigantic config key. A more appropriate type is size_t. Let's switch over, which lets our callers use size_t as appropriate (they are bound by our type because they must pass the out-parameter as a pointer). This is mostly just a cleanup to make it clear this code handles long strings correctly. In practice, our config parser already chokes on long key names (because of a similar int/size_t mixup!). When doing an int/size_t conversion, we have to be careful that nobody was trying to assign a negative value to the variable. I manually confirmed that for each case here. They tend to just feed the result to xmemdupz() or similar; in a few cases I adjusted the parameter types for helper functions to make sure the size_t is preserved. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'submodule-config.c')
-rw-r--r--submodule-config.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/submodule-config.c b/submodule-config.c
index 4d1c92d582..e175dfbc38 100644
--- a/submodule-config.c
+++ b/submodule-config.c
@@ -225,7 +225,8 @@ static int name_and_item_from_var(const char *var, struct strbuf *name,
struct strbuf *item)
{
const char *subsection, *key;
- int subsection_len, parse;
+ size_t subsection_len;
+ int parse;
parse = parse_config_key(var, "submodule", &subsection,
&subsection_len, &key);
if (parse < 0 || !subsection)