Add __attribute__((const, pure, format)) in various places

I'm assuming that it's fine if a _const_ or _pure_ function
calls assert. It is assumed that the assert won't trigger,
and even if it does, it can only trigger on the first call
with a given set of parameters, and we don't care if the
compiler moves the order of calls.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/core/execute.c b/src/core/execute.c
index 5767037acd..3959ef9623 100644
--- a/src/core/execute.c
+++ b/src/core/execute.c
@@ -144,7 +144,7 @@ static int flags_fds(const int fds[], unsigned n_fds, bool nonblock) {
         return 0;
 }
 
-static const char *tty_path(const ExecContext *context) {
+_pure_ static const char *tty_path(const ExecContext *context) {
         assert(context);
 
         if (context->tty_path)
@@ -509,7 +509,7 @@ fail:
         return r;
 }
 
-static int write_confirm_message(const char *format, ...) {
+_printf_attr_(1, 2) static int write_confirm_message(const char *format, ...) {
         int fd;
         va_list ap;