: croak()'s first parm can be NULL. Otherwise, mod_perl breaks.
Afprd |void |croak |NULLOK const char* pat|...
Apr |void |vcroak |NULLOK const char* pat|NULLOK va_list* args
+Aprd |void |croak_xs_usage |NN const CV *const cv \
+ |NN const char *const params
+
#if defined(PERL_IMPLICIT_CONTEXT)
Afnrp |void |croak_nocontext|NULLOK const char* pat|...
Afnp |OP* |die_nocontext |NN const char* pat|...