((C) ? ((void) 0) \
: (Perl_croak_nocontext("Assertion %s failed: file \"" __FILE__ \
"\", line %d", STRINGIFY(C), __LINE__), \
((C) ? ((void) 0) \
: (Perl_croak_nocontext("Assertion %s failed: file \"" __FILE__ \
"\", line %d", STRINGIFY(C), __LINE__), \