Using the "regex" module, I had the error #error "Add case for new bitset_word_t size"
from regex_internal.h when using pcc under NetBSD. $ pcc --version pcc 1.2.0.DEVEL 20141228 for x86_64--netbsd The problem appears to be that the C preprocessor thinks that ULONG_MAX is a negative value. With #if 0xffffffffffffffffUL < 0 #warning OK #endif the message "OK" is printed. This appears to be the same bug mentioned here: http://lists.gnu.org/archive/html/bug-gnulib/2009-02/msg00045.html I recommend that NOTHING BE DONE about this failure. I write this email, not to get a fix, but to stop others spending time if they have the same problem. The amount of workarounds for bugs and non-comformance to standards should reduce over time, not increase (maybe one beautiful day there won't even be a need for gnulib), which won't happen if people keep on writing new buggy, defective compilers from scratch. Adding portability workarounds for these new compilers just encourages people to use them. Earlier on pcc on this mailing list: http://lists.gnu.org/archive/html/bug-gnulib/2011-11/msg00205.html http://lists.gnu.org/archive/html/bug-gnulib/2011-04/msg00110.html
