icc compile error on OS X

The code:
--------------------------
#include

int main() {
#ifdef __clang_version__
printf("%s\n", __clang_version__);
#endif
}
---------------------------

__clang_version__ is a builtin macro defined by clang, and is supposed to be irrelevant to icc. But icc emits a compile error when compiling this code:

test.c(5): error: extra text after expected end of number
printf("%s\n", __clang_version__);
^

This looks like a bug.

Specs:
OS X 10.10.3
icc 15.0.2