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This commit is contained in:
Christopher Faylor 2002-05-04 04:30:57 +00:00
parent 8761c1dcf7
commit 58e74c7e7f
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winsup/cygwin/how-fhandlers-work.txt
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@ -63,3 +63,13 @@ cannot.
For an example step-by-step to create a new fhandler, see For an example step-by-step to create a new fhandler, see
../doc/fhandler-tut.txt ../doc/fhandler-tut.txt
Note: In most case, it is safe to assume that using new/delete (or
malloc/free) in an fhandler is dangerous and to be avoided. The reason
for this is that memory allocated to fhandlers is copied between execed
processes in the cygwin heap. Memory allocated in new/delete is only
copied to forked processes. So use cmalloc/cfree.
Obviously it is possible to use new/delete in some situations but if you're
seeing strange core dumps with usages like cat < /my/newfhandler then the
above may well be the culprit.