Update TODO (add FIXME regarding forking in Cygwin)

diff --git a/TODO b/TODO
index 97d1ab0dceb92ed79f67acba5716ff054fcdc2a2..d8a8b76de2dd3e805eddef085902f509f3980ccb 100644 (file)
--- a/TODO
+++ b/TODO
@@ -69,5 +69,7 @@ NetBSD 5.1/x86: threadkey_test hangs sometimes.
 
 Cygwin: subthread_create: exception STATUS_ACCESS_VIOLATION.
 
+Cygwin: gctest: assertion failure at UNLOCK in GC_fork_parent_proc.
+
 Sun C++ 5.11: test_cpp.cc:237: Error: Too few arguments in call to
 "operator delete(void*, GCPlacement, extern "C" void(*)(void*,void*), void*)".