Right, that's why the change should be reverted on the 4.3 branch. On the other hand, if you can get the ZCX support to work on the mainline before 4.4.0 is released, we could try there.
FYI, I have just succeeded in building gcc-4.3.3 including Ada for MinGW by setting
ZCX_By_Default : constant Boolean := True;
in system-mingw.ads as suggested by Danny Smith. The ACATS tests show
quite some failures, though. I don't know if they are due to the EH or
if there are other causes.
Rolf
