How to printf a size_t without warning in mingw-w64 gcc 7.1?

Question

I am using the mingw-w64 (x64) fork of minGW as prepared on nuwen.net. This is from the 7.1 version of gcc :

gcc --version
gcc (GCC) 7.1.0

Answer 1

PRIuPTR trick works (Cross platform format string for variables of type size_t?):

#include 
#include 
int main()
{
    size_t a = (size_t)(1024ULL * 1024 * 1024 * 1024 + 13);
    printf("a                 = %" PRIuPTR "\n", a);
    printf("sizeof(size_t)    = %" PRIuPTR "\n", sizeof(size_t));
    printf("sizeof(uintptr_t) = %" PRIuPTR "\n", sizeof(uintptr_t));
    return 0;
}

Output x86:

a                 = 13
sizeof(size_t)    = 4
sizeof(uintptr_t) = 4

Output x64:

a                 = 1099511627789
sizeof(size_t)    = 8
sizeof(uintptr_t) = 8