cbuild successfully built this on i686-natty-cbuild221-oort2-i686r1.

The build results are available at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.5+bzr99557~ams-codesourcery~merge-from-fsf-4.5-20120105/logs/i686-natty-cbuild221-oort2-i686r1

+PASS: g++.dg/cpp0x/rv-cast3.C (test for excess errors)
+PASS: g++.dg/cpp0x/rv-cast3.C execution test
+PASS: g++.dg/cpp0x/rv-cast4.C  (test for errors, line 12)
+PASS: g++.dg/cpp0x/rv-cast4.C (test for excess errors)
+PASS: g++.dg/torture/pr50189.C  -O0  (test for excess errors)
+PASS: g++.dg/torture/pr50189.C  -O0  execution test
+PASS: g++.dg/torture/pr50189.C  -O1  (test for excess errors)
+PASS: g++.dg/torture/pr50189.C  -O1  execution test
+PASS: g++.dg/torture/pr50189.C  -O2  (test for excess errors)
+PASS: g++.dg/torture/pr50189.C  -O2  execution test
+PASS: g++.dg/torture/pr50189.C  -O2 -flto  (test for excess errors)
+PASS: g++.dg/torture/pr50189.C  -O2 -flto  execution test
+PASS: g++.dg/torture/pr50189.C  -O2 -fwhopr  (test for excess errors)
+PASS: g++.dg/torture/pr50189.C  -O2 -fwhopr  execution test
+PASS: g++.dg/torture/pr50189.C  -O3 -fomit-frame-pointer  (test for excess errors)
+PASS: g++.dg/torture/pr50189.C  -O3 -fomit-frame-pointer  execution test
+PASS: g++.dg/torture/pr50189.C  -O3 -g  (test for excess errors)
+PASS: g++.dg/torture/pr50189.C  -O3 -g  execution test
+PASS: g++.dg/torture/pr50189.C  -Os  (test for excess errors)
+PASS: g++.dg/torture/pr50189.C  -Os  execution test
+PASS: gcc.c-torture/execute/pr49279.c compilation,  -O0
+PASS: gcc.c-torture/execute/pr49279.c compilation,  -O1
+PASS: gcc.c-torture/execute/pr49279.c compilation,  -O2
+PASS: gcc.c-torture/execute/pr49279.c compilation,  -O2 -flto
+PASS: gcc.c-torture/execute/pr49279.c compilation,  -O2 -fwhopr
+PASS: gcc.c-torture/execute/pr49279.c compilation,  -O3 -fomit-frame-pointer
+PASS: gcc.c-torture/execute/pr49279.c compilation,  -O3 -g
+PASS: gcc.c-torture/execute/pr49279.c compilation,  -Os
+PASS: gcc.c-torture/execute/pr49279.c execution,  -O0
+PASS: gcc.c-torture/execute/pr49279.c execution,  -O1
+PASS: gcc.c-torture/execute/pr49279.c execution,  -O2
+PASS: gcc.c-torture/execute/pr49279.c execution,  -O2 -flto
+PASS: gcc.c-torture/execute/pr49279.c execution,  -O2 -fwhopr
+PASS: gcc.c-torture/execute/pr49279.c execution,  -O3 -fomit-frame-pointer
+PASS: gcc.c-torture/execute/pr49279.c execution,  -O3 -g
+PASS: gcc.c-torture/execute/pr49279.c execution,  -Os
+PASS: gcc.dg/pr51408.c (test for excess errors)
+PASS: gcc.dg/pr51408.c execution test
+PASS: gcc.dg/torture/pr49651.c  -O0  (test for excess errors)
+PASS: gcc.dg/torture/pr49651.c  -O0  execution test
+PASS: gcc.dg/torture/pr49651.c  -O1  (test for excess errors)
+PASS: gcc.dg/torture/pr49651.c  -O1  execution test
+PASS: gcc.dg/torture/pr49651.c  -O2  (test for excess errors)
+PASS: gcc.dg/torture/pr49651.c  -O2  execution test
+PASS: gcc.dg/torture/pr49651.c  -O2 -flto  (test for excess errors)
+PASS: gcc.dg/torture/pr49651.c  -O2 -flto  execution test
+PASS: gcc.dg/torture/pr49651.c  -O2 -fwhopr  (test for excess errors)
+PASS: gcc.dg/torture/pr49651.c  -O2 -fwhopr  execution test
+PASS: gcc.dg/torture/pr49651.c  -O3 -fomit-frame-pointer  (test for excess errors)
+PASS: gcc.dg/torture/pr49651.c  -O3 -fomit-frame-pointer  execution test
...and 7 more

The full diff is at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.5+bzr99557~ams-codesourcery~merge-from-fsf-4.5-20120105/logs/i686-natty-cbuild221-oort2-i686r1/testsuite-diff.txt

The full testsuite results are at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.5+bzr99557~ams-codesourcery~merge-from-fsf-4.5-20120105/logs/i686-natty-cbuild221-oort2-i686r1/gcc-testsuite.txt

cbuild-checked: i686-natty-cbuild221-oort2-i686r1