On Fri, 23 Oct 2020, Vivien Kraus wrote:
Is it not possible to always use "%lld" and always convert the arguments to (long long int)?
The way I have been doing things for many years is to get the size of the underlying type and then include a cast in the printf arguments to a type of the same size. The need to add a cast is a bit messy, but then then again, just about everything related to printf is messy.
So create a define for the time_t formatter, and a define/typedef for the type to cast to.
The approach that Paul Eggert suggests is very interesting, but it might not provide absolute proof of the C type since the compiler/linker might allow success if the types are the same size. A printf syntax checker might not use the same rules.
Anything involving executing code should be avoided as much as possible since it hurts cross compilation.
Anything involving recent C standards should be avoided since it harms portability.
Bob -- Bob Friesenhahn bfriesen@xxxxxxxxxxxxxxxxxxx, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ Public Key, http://www.simplesystems.org/users/bfriesen/public-key.txt
