[Bug c++/55402] New: Compiling large initializer lists never finishes

[kevin at topsy dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55402

             Bug #: 55402
           Summary: Compiling large initializer lists never finishes
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: kevin@topsy.com


An initializer list of tens of thousands of simple std::pair<...> causes GCC
4.7.2 to busily never return.

Command line:

kevin@ps027:~$ cat /proc/version
Linux version 2.6.32-32-server (buildd@allspice) (gcc version 4.4.3 (Ubuntu
4.4.3-4ubuntu5) ) #62-Ubuntu SMP Wed Apr 20 22:07:43 UTC 2011
kevin@ps027:~$ g++-4.7 --version
g++-4.7 (Ubuntu/Linaro 4.7.2-2+ub1) 4.7.2
Copyright (C) 2012 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

kevin@ps027:~$ g++ -std=c++0x -save-temps hang.cc
(never returns, compiler forever busy)