Use strlen even for constant strings

GCC optimizes strlen("string constant") to a constant, even with -O0.
Thus, replace patterns like sizeof("string constant")-1 with
strlen("string constant") where possible, for clarity.  In particular,
for expressions intended to add up the lengths of components going into
a string, this often makes it clearer that the expression counts the
trailing '\0' exactly once, by putting the +1 for the '\0' at the end of
the expression, rather than hidden in a sizeof in the middle of the
expression.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libsystemd/sd-bus/bus-socket.c b/src/libsystemd/sd-bus/bus-socket.c
index 0c4b6af447..016f8a1c9f 100644
--- a/src/libsystemd/sd-bus/bus-socket.c
+++ b/src/libsystemd/sd-bus/bus-socket.c
@@ -227,8 +227,8 @@ static int bus_socket_auth_verify_client(sd_bus *b) {
 
         if (f)
                 b->can_fds =
-                        (f - e == sizeof("\r\nAGREE_UNIX_FD") - 1) &&
-                        memcmp(e + 2, "AGREE_UNIX_FD", sizeof("AGREE_UNIX_FD") - 1) == 0;
+                        (f - e == strlen("\r\nAGREE_UNIX_FD")) &&
+                        memcmp(e + 2, "AGREE_UNIX_FD", strlen("AGREE_UNIX_FD")) == 0;
 
         b->rbuffer_size -= (start - (char*) b->rbuffer);
         memmove(b->rbuffer, start, b->rbuffer_size);