The function compute_rev_name() can return NULL sometimes (e.g. right after 'submodule init'). The current code makes 'submodule status' print this:
19d97bf5af05312267c2e874ee6bcf584d9e9681 sha1collisiondetection ((null)) This ugly 'null' adds no value to the user using this command. More importantly printf() on some platform can't handle NULL as a string and will crash instead of printing '(null)'. Check for this and skip printing this part (the alternative is printing '(n/a)' or something but I think that is just noise). Signed-off-by: Nguyễn Thái Ngọc Duy <[email protected]> --- builtin/submodule--helper.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c index a404df3ea4..4dc7d7d29f 100644 --- a/builtin/submodule--helper.c +++ b/builtin/submodule--helper.c @@ -596,8 +596,12 @@ static void print_status(unsigned int flags, char state, const char *path, printf("%c%s %s", state, oid_to_hex(oid), displaypath); - if (state == ' ' || state == '+') - printf(" (%s)", compute_rev_name(path, oid_to_hex(oid))); + if (state == ' ' || state == '+') { + const char *name = compute_rev_name(path, oid_to_hex(oid)); + + if (name) + printf(" (%s)", name); + } printf("\n"); } -- 2.17.0.367.g5dd2e386c3
