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5e0f482f2c
initialization. * dcrt0.cc (initial_env): Can it really be true that XP doesn't allow attaching a debugger during DLL attach? Add temporary workaround. (dll_crt0_0): Ensure that _impure_ptr stdio is initialized before any threads. (dll_crt0_1): Move _impure_ptr initialization to dll_crt0_0. * exceptions.cc (try_to_debug): Reinstate old method for looping while debugging. * syscalls.cc (_cygwin_istext_for_stdio): Regularize debugging output. Remove hopefully extraneous check. (setmode_helper): Add debugging output for improbable case. Use "binary" rather "raw" for consistency.