I talked about doing this in 4.9
(https://gcc.gnu.org/ml/gcc/2013-03/msg00008.html), but decided to put
it off along with the libstdc++ ABI transition. I think it's time now.
Tested x86_64-pc-linux-gnu, applying to trunk.
commit a2aa0efcd1f27e85a4c652f5177c66686f530a96
Author: Jason Merrill <ja...@redhat.com>
Date: Mon Jun 9 16:37:43 2014 -0400
* common.opt (fabi-version): Change default to 0.
diff --git a/gcc/common.opt b/gcc/common.opt
index f61fab5..7f05092 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -808,7 +808,8 @@ Driver Undocumented
; Additional positive integers will be assigned as new versions of
; the ABI become the default version of the ABI.
fabi-version=
-Common Joined RejectNegative UInteger Var(flag_abi_version) Init(2)
+Common Joined RejectNegative UInteger Var(flag_abi_version) Init(0)
+The version of the C++ ABI in use
faggressive-loop-optimizations
Common Report Var(flag_aggressive_loop_optimizations) Optimization Init(1)
