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During fork, the child process requires the process table to be initialized for fixup_shms_after_fork, while still allowing subsequent dlls.load_after_fork to fail silently (for when the "forkable" hardlinks are not created yet). pinfo::remember not performing reattach anymore requires explicit pinfo::reattach now where appropriate. Prepares to improve "Cygwin: fork: Remember child not before success." commit f03ea8e1c57bd5cea83f6cd47fa02870bdfeb1c5, which leads to fork problems if cygserver is running: https://cygwin.com/ml/cygwin-patches/2019-q2/msg00155.html
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cygwin documentation is available on the net at https://cygwin.com You might especially be interested in https://cygwin.com/faq/faq.html#faq.programming.building-cygwin