/* Any directive can be preceded by a space. */
#version 300
#pragma Testing spaces before hash
#
#line 3
#define FOO
#ifdef FOO
yes
#endif
#if 0
#elif defined FOO
yes again
#endif
#if 0
#else
for the third time, yes!
#endif
#undef FOO
#ifndef FOO
yes, of course
#endif