[Bug objc++/48479] New: [4.7 Regression] Many ICEs in the obj-c++.dg test suite on *-apple-darwin*

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48479

           Summary: [4.7 Regression] Many ICEs in the obj-c++.dg test
                    suite on *-apple-darwin*
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: objc++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dominiq@lps.ens.fr
                CC: nicola.pero@meta-innovation.com, iains@gcc.gnu.org
              Host: *-apple-darwin*
            Target: *-apple-darwin*
             Build: *-apple-darwin*


Between revisions 171800 and 171957 many failures appeared in the obj-c++.dg
test suite on *-apple-darwin*(see
http://gcc.gnu.org/ml/gcc-testresults/2011-04/msg00442.html ):

FAIL: obj-c++.dg/template-4.mm -fnext-runtime (internal compiler error)
FAIL: obj-c++.dg/template-4.mm -fnext-runtime (test for excess errors)
WARNING: obj-c++.dg/template-4.mm -fnext-runtime compilation failed to produce
executable
FAIL: obj-c++.dg/strings/const-str-12.mm -fnext-runtime (internal compiler
error)
FAIL: obj-c++.dg/strings/const-str-12.mm -fnext-runtime (test for excess
errors)
...
FAIL: obj-c++.dg/torture/strings/string1.mm  -O2 -flto  -fnext-runtime
(internal compiler error)
FAIL: obj-c++.dg/torture/strings/string1.mm  -O2 -flto  -fnext-runtime (test
for excess errors)
WARNING: obj-c++.dg/torture/strings/string1.mm  -O2 -flto  -fnext-runtime
compilation failed to produce executable

AFAICT they are all of the kind

/opt/gcc/work/gcc/testsuite/obj-c++.dg/template-4.mm: In function 'int main()':
/opt/gcc/work/gcc/testsuite/obj-c++.dg/template-4.mm:75:3: internal compiler
error: tree check: expected tree that contains 'decl with RTL' structure, have
'const_decl' in cxx_mark_addressable, at cp/typeck.c:5378