https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62212
--- Comment #2 from Lewis Hyatt <lhyatt at gmail dot com> --- Hello- FYI, I have located the commit which broke this testcase, it is this one: ====================== Author: jason Date: Fri Oct 15 21:15:13 2010 New Revision: 165521 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165521 Log: PR c++/45983 * tree.c (cp_build_qualified_type_real): Don't reuse a variant with a different typedef variant of the element type. Added: trunk/gcc/testsuite/g++.dg/lto/pr45983_0.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/tree.c trunk/gcc/testsuite/ChangeLog ====================== Thanks... -Lewis