Defined in 4 files as a macro:
- contrib/lua/src/lstrlib.c, line 239 (as a macro)
- contrib/sendmail/smrsh/smrsh.c, line 85 (as a macro)
- lib/libiconv_modules/mapper_646/citrus_mapper_646.c, line 62 (as a macro)
- sys/contrib/openzfs/module/lua/lstrlib.c, line 234 (as a macro)