Is “typedef” in between the type and the alias standard-conformant?

Question

I stumbled upon some code where the typedef keyword is in between the type and the alias name like in

int typedef INT;

It compiles

Answer 1

I compile using:

gcc -c -Wall -Wextra -pedantic -Wconversion -std=gnu99

In the background, this means -Wold-style-declaration is set.

Then the compiler outputs the following warning message:

warning: 'typedef' is not a beginning of declaration [-Wold-style-declaration]

without that parameter being set, the compiler handles the syntax with no problems

So the posted syntax is within the standard, but can be confusing to the reader.