What is the simplest standard conform way to produce a Segfault in C?

Question

I think the question says it all. An example covering most standards from C89 to C11 would be helpful. I though of this one, but I guess it is just undefined behaviour:

Answer 1

On some platforms, a standard-conforming C program can fail with a segmentation fault if it requests too many resources from the system. For instance, allocating a large object with malloc can appear to succeed, but later, when the object is accessed, it will crash.

Note that such a program is not strictly conforming; programs which meet that definition have to stay within each of the minimum implementation limits.

A standard-conforming C program cannot produce a segmentation fault otherwise, because the only other ways are via undefined behavior.

The SIGSEGV signal can be raised explicitly, but there is no SIGSEGV symbol in the standard C library.

(In this answer, "standard-conforming" means: "Uses only the features described in some version of the ISO C standard, avoiding unspecified, implementation-defined or undefined behavior, but not necessarily confined to the minimum implementation limits.")