cbuild successfully built this on x86_64-natty-cbuild238-oort1-x86_64r1.

The build results are available at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.6+bzr106866~ams-codesourcery~merge-from-fsf-4.6-20120201/logs/x86_64-natty-cbuild238-oort1-x86_64r1

+XFAIL: g++.dg/abi/mangle60.C (test for excess errors)
+UNRESOLVED: g++.dg/abi/mangle60.C scan-assembler _Z3barIiEvP1AIXszcl3foocvT__ELCi0_42EEEE
+UNRESOLVED: g++.dg/abi/mangle60.C scan-assembler _Z3bazIiEvP1AIXszcl3foocvT__ELCf00000000_00000000EEEE
+PASS: g++.dg/cpp0x/rv-bitfield.C (test for excess errors)
+PASS: g++.dg/cpp0x/rv-bitfield2.C (test for excess errors)
+PASS: g++.dg/ipa/pr51759.C (test for excess errors)
+PASS: g++.dg/ipa/pr51759.C execution test
+UNSUPPORTED: g++.dg/torture/pr51344.C  -O0
+UNSUPPORTED: g++.dg/torture/pr51344.C  -O1
+UNSUPPORTED: g++.dg/torture/pr51344.C  -O2
+UNSUPPORTED: g++.dg/torture/pr51344.C  -O2 -flto
+UNSUPPORTED: g++.dg/torture/pr51344.C  -O2 -flto -flto-partition=none
+UNSUPPORTED: g++.dg/torture/pr51344.C  -O3 -fomit-frame-pointer
+UNSUPPORTED: g++.dg/torture/pr51344.C  -O3 -g
+UNSUPPORTED: g++.dg/torture/pr51344.C  -Os
+PASS: gcc.c-torture/execute/20120105-1.c compilation,  -O0
+PASS: gcc.c-torture/execute/20120105-1.c compilation,  -O1
+PASS: gcc.c-torture/execute/20120105-1.c compilation,  -O2
+PASS: gcc.c-torture/execute/20120105-1.c compilation,  -O2 -flto
+PASS: gcc.c-torture/execute/20120105-1.c compilation,  -O2 -flto -flto-partition=none
+PASS: gcc.c-torture/execute/20120105-1.c compilation,  -O3 -fomit-frame-pointer
+PASS: gcc.c-torture/execute/20120105-1.c compilation,  -O3 -g
+PASS: gcc.c-torture/execute/20120105-1.c compilation,  -Os
+PASS: gcc.c-torture/execute/20120105-1.c execution,  -O0
+PASS: gcc.c-torture/execute/20120105-1.c execution,  -O1
+PASS: gcc.c-torture/execute/20120105-1.c execution,  -O2
+PASS: gcc.c-torture/execute/20120105-1.c execution,  -O2 -flto
+PASS: gcc.c-torture/execute/20120105-1.c execution,  -O2 -flto -flto-partition=none
+PASS: gcc.c-torture/execute/20120105-1.c execution,  -O3 -fomit-frame-pointer
+PASS: gcc.c-torture/execute/20120105-1.c execution,  -O3 -g
+PASS: gcc.c-torture/execute/20120105-1.c execution,  -Os
+PASS: gcc.c-torture/execute/20120111-1.c compilation,  -O0
+PASS: gcc.c-torture/execute/20120111-1.c compilation,  -O1
+PASS: gcc.c-torture/execute/20120111-1.c compilation,  -O2
+PASS: gcc.c-torture/execute/20120111-1.c compilation,  -O2 -flto
+PASS: gcc.c-torture/execute/20120111-1.c compilation,  -O2 -flto -flto-partition=none
+PASS: gcc.c-torture/execute/20120111-1.c compilation,  -O3 -fomit-frame-pointer
+PASS: gcc.c-torture/execute/20120111-1.c compilation,  -O3 -g
+PASS: gcc.c-torture/execute/20120111-1.c compilation,  -Os
+PASS: gcc.c-torture/execute/20120111-1.c execution,  -O0
+PASS: gcc.c-torture/execute/20120111-1.c execution,  -O1
+PASS: gcc.c-torture/execute/20120111-1.c execution,  -O2
+PASS: gcc.c-torture/execute/20120111-1.c execution,  -O2 -flto
+PASS: gcc.c-torture/execute/20120111-1.c execution,  -O2 -flto -flto-partition=none
+PASS: gcc.c-torture/execute/20120111-1.c execution,  -O3 -fomit-frame-pointer
+PASS: gcc.c-torture/execute/20120111-1.c execution,  -O3 -g
+PASS: gcc.c-torture/execute/20120111-1.c execution,  -Os
+PASS: gcc.c-torture/execute/doloop-1.c compilation,  -O0
+PASS: gcc.c-torture/execute/doloop-1.c compilation,  -O1
+PASS: gcc.c-torture/execute/doloop-1.c compilation,  -O2
...and 78 more

The full diff is at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.6+bzr106866~ams-codesourcery~merge-from-fsf-4.6-20120201/logs/x86_64-natty-cbuild238-oort1-x86_64r1/testsuite-diff.txt

The full testsuite results are at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.6+bzr106866~ams-codesourcery~merge-from-fsf-4.6-20120201/logs/x86_64-natty-cbuild238-oort1-x86_64r1/gcc-testsuite.txt

cbuild-checked: x86_64-natty-cbuild238-oort1-x86_64r1