https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66936
--- Comment #6 from Keith Marshall <keith.marshall at mailinator dot com> --- (In reply to kargl from comment #4) > Update title. The code in question is > > #ifdef HAVE_UMASK > /* Temporarily set the umask such that the file has 0600 permissions. */ > mode_mask = umask (S_IXUSR | S_IRWXG | S_IRWXO); > #endif > > MinGW appears to define HAVE_UMASK, but MinGW seems to lack > a correctly written umask(3). Just for the record: MinGW has had access to Microsoft's umask() implementation for a very long time; HAVE_UMASK has always been defined, when compiling the mingw32 builds of GCC. However, this particular block of code is encapsulated within an outer #ifdef HAVE_MKSTEMP block, and it is only recently that MinGW has provided an implementation of mkstemp(), (Microsoft do not offer one), which has caused HAVE_MKSTEMP to become defined, so exposing this (presumably long-standing) bug.
