The first patch ensures that vsnprintf() never returns a negative value. Finding (indirect) callers and having them all handle that would be a whack-a-mole game for no real gain. Even if the callers don't directly use the return value, they might rely on vsnprintf() always producing a nul-terminated string, which is not the case if we do an early "return -Esomething".
The last fixes a bug I found while looking for impact of %pD returning a negative value.
The second and fourth reduce the size of vsprintf.o a little.
Rasmus Villemoes (5): lib/vsprintf.c: make sure vsnprintf() never returns a negative value lib/vsprintf.c: implement printf() in terms of vprintf() lib/vsprintf.c: remove stale comment lib/vsprintf.c: remove unused ip6_addr_string() common/log.c: use vscnprintf() in log_dispatch()
common/log.c | 2 +- lib/vsprintf.c | 28 ++++++---------------------- 2 files changed, 7 insertions(+), 23 deletions(-)